[PATCH v5 00/31] accel: Move has_work() from SysemuCPUOps to AccelOpsClass

[PATCH v5 00/31] accel: Move has_work() from SysemuCPUOps to AccelOpsClass

[Philippe Mathieu-Daudé]

Missing review:
- 0001-target-arm-Implement-arm_v7m_cpu_has_work.patch
- 0005-sysemu-Introduce-AccelOpsClass-has_work.patch
- 0008-accel-tcg-Implement-AccelOpsClass-has_work-as-stub.patch
- 0010-target-arm-Restrict-has_work-handler-to-sysemu-and-T.patch
- 0012-target-cris-Restrict-has_work-handler-to-sysemu.patch

Hi,

CPU has_work() is a per-accelerator handler. This series
- explicit the KVM / WHPX implementations
- moves TCG implementations in AccelOpsClass
- explicit missing implementations (returning 'false').

Since v4:
- Implement arm_v7m_cpu_has_work() (new patch)
- Assert has_work() handlers are set, don't use default value
- Fix ARM v7M and cris CPUs
- Reset R-b tags on modified patches

Since v3:
- Remove pointless CONFIG_TCG uses (rth)
- Rework PPC patches, still using indirection

Since v2:
- Full rewrite, no more RFC.

$ git backport-diff v3..v4
[----] : patches are identical
[####] : number of functional differences between upstream/downstream patch
[down] : patch is downstream-only
The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively

001/31:[down] 'target/arm: Implement arm_v7m_cpu_has_work()'
002/31:[----] [--] 'accel/tcg: Restrict cpu_handle_halt() to sysemu'
003/31:[----] [--] 'hw/core: Restrict cpu_has_work() to sysemu'
004/31:[----] [--] 'hw/core: Un-inline cpu_has_work()'
005/31:[0006] [FC] 'sysemu: Introduce AccelOpsClass::has_work()'
006/31:[----] [--] 'accel/kvm: Implement AccelOpsClass::has_work()'
007/31:[----] [--] 'accel/whpx: Implement AccelOpsClass::has_work()'
008/31:[0004] [FC] 'accel/tcg: Implement AccelOpsClass::has_work() as stub'
009/31:[----] [--] 'target/alpha: Restrict has_work() handler to sysemu'
010/31:[0002] [FC] 'target/arm: Restrict has_work() handler to sysemu and TCG'
011/31:[----] [--] 'target/avr: Restrict has_work() handler to sysemu'
012/31:[0001] [FC] 'target/cris: Restrict has_work() handler to sysemu'
013/31:[----] [--] 'target/hexagon: Remove unused has_work() handler'
014/31:[----] [--] 'target/hppa: Restrict has_work() handler to sysemu'
015/31:[----] [--] 'target/i386: Restrict has_work() handler to sysemu and TCG'
016/31:[----] [--] 'target/m68k: Restrict has_work() handler to sysemu'
017/31:[----] [--] 'target/microblaze: Restrict has_work() handler to sysemu'
018/31:[----] [--] 'target/mips: Restrict has_work() handler to sysemu and TCG'
019/31:[----] [--] 'target/nios2: Restrict has_work() handler to sysemu'
020/31:[----] [--] 'target/openrisc: Restrict has_work() handler to sysemu'
021/31:[----] [--] 'target/ppc: Introduce PowerPCCPUClass::has_work()'
022/31:[----] [--] 'target/ppc: Restrict has_work() handlers to sysemu and TCG'
023/31:[----] [--] 'target/riscv: Restrict has_work() handler to sysemu and TCG'
024/31:[----] [--] 'target/rx: Restrict has_work() handler to sysemu'
025/31:[----] [--] 'target/s390x: Restrict has_work() handler to sysemu and TCG'
026/31:[----] [--] 'target/sh4: Restrict has_work() handler to sysemu'
027/31:[----] [--] 'target/sparc: Remove pointless use of CONFIG_TCG definition'
028/31:[----] [--] 'target/sparc: Restrict has_work() handler to sysemu'
029/31:[----] [--] 'target/tricore: Restrict has_work() handler to sysemu'
030/31:[----] [--] 'target/xtensa: Restrict has_work() handler to sysemu'
031/31:[0006] [FC] 'accel: Add missing AccelOpsClass::has_work() and drop SysemuCPUOps one'

Philippe Mathieu-Daudé (31):
  target/arm: Implement arm_v7m_cpu_has_work()
  accel/tcg: Restrict cpu_handle_halt() to sysemu
  hw/core: Restrict cpu_has_work() to sysemu
  hw/core: Un-inline cpu_has_work()
  sysemu: Introduce AccelOpsClass::has_work()
  accel/kvm: Implement AccelOpsClass::has_work()
  accel/whpx: Implement AccelOpsClass::has_work()
  accel/tcg: Implement AccelOpsClass::has_work() as stub
  target/alpha: Restrict has_work() handler to sysemu
  target/arm: Restrict has_work() handler to sysemu and TCG
  target/avr: Restrict has_work() handler to sysemu
  target/cris: Restrict has_work() handler to sysemu
  target/hexagon: Remove unused has_work() handler
  target/hppa: Restrict has_work() handler to sysemu
  target/i386: Restrict has_work() handler to sysemu and TCG
  target/m68k: Restrict has_work() handler to sysemu
  target/microblaze: Restrict has_work() handler to sysemu
  target/mips: Restrict has_work() handler to sysemu and TCG
  target/nios2: Restrict has_work() handler to sysemu
  target/openrisc: Restrict has_work() handler to sysemu
  target/ppc: Introduce PowerPCCPUClass::has_work()
  target/ppc: Restrict has_work() handlers to sysemu and TCG
  target/riscv: Restrict has_work() handler to sysemu and TCG
  target/rx: Restrict has_work() handler to sysemu
  target/s390x: Restrict has_work() handler to sysemu and TCG
  target/sh4: Restrict has_work() handler to sysemu
  target/sparc: Remove pointless use of CONFIG_TCG definition
  target/sparc: Restrict has_work() handler to sysemu
  target/tricore: Restrict has_work() handler to sysemu
  target/xtensa: Restrict has_work() handler to sysemu
  accel: Add missing AccelOpsClass::has_work() and drop SysemuCPUOps one

 include/hw/core/cpu.h             | 28 +++++++++--------------
 include/hw/core/tcg-cpu-ops.h     |  4 ++++
 include/sysemu/accel-ops.h        |  5 +++++
 target/ppc/cpu-qom.h              |  3 +++
 accel/hvf/hvf-accel-ops.c         |  6 +++++
 accel/kvm/kvm-accel-ops.c         |  6 +++++
 accel/qtest/qtest.c               |  6 +++++
 accel/tcg/cpu-exec.c              |  6 +++--
 accel/tcg/tcg-accel-ops.c         | 10 +++++++++
 accel/xen/xen-all.c               |  6 +++++
 hw/core/cpu-common.c              |  6 -----
 softmmu/cpus.c                    | 10 ++++++---
 target/alpha/cpu.c                |  4 +++-
 target/arm/cpu.c                  |  7 ++++--
 target/arm/cpu_tcg.c              |  6 +++++
 target/avr/cpu.c                  |  2 +-
 target/cris/cpu.c                 |  5 ++++-
 target/hexagon/cpu.c              |  6 -----
 target/hppa/cpu.c                 |  4 +++-
 target/i386/cpu.c                 |  6 -----
 target/i386/hax/hax-accel-ops.c   |  6 +++++
 target/i386/nvmm/nvmm-accel-ops.c |  6 +++++
 target/i386/tcg/tcg-cpu.c         |  8 ++++++-
 target/i386/whpx/whpx-accel-ops.c |  6 +++++
 target/m68k/cpu.c                 |  4 +++-
 target/microblaze/cpu.c           |  8 +++----
 target/mips/cpu.c                 |  4 +++-
 target/nios2/cpu.c                |  4 +++-
 target/openrisc/cpu.c             |  4 +++-
 target/ppc/cpu_init.c             | 37 ++++++++++++++++++++++---------
 target/riscv/cpu.c                |  8 +++----
 target/rx/cpu.c                   |  4 +++-
 target/s390x/cpu.c                |  4 +++-
 target/sh4/cpu.c                  |  5 +++--
 target/sparc/cpu.c                |  6 ++---
 target/tricore/cpu.c              |  6 ++++-
 target/xtensa/cpu.c               | 14 ++++++------
 37 files changed, 184 insertions(+), 86 deletions(-)

-- 
2.31.1

[PATCH v5 01/31] target/arm: Implement arm_v7m_cpu_has_work()

[Philippe Mathieu-Daudé]

Implement SysemuCPUOps::has_work() handler for the ARM v7M CPU.

See the comments added in commit 7ecdaa4a963 ("armv7m: Fix
condition check for taking exceptions") which eventually
forgot to implement this has_work() handler:

  * ARMv7-M interrupt masking works differently than -A or -R.
  * There is no FIQ/IRQ distinction.

The NVIC signal any pending interrupt by raising ARM_CPU_IRQ
(see commit 56b7c66f498: "armv7m: QOMify the armv7m container")
which ends setting the CPU_INTERRUPT_HARD bit in interrupt_request.

Thus arm_v7m_cpu_has_work() implementation is thus quite trivial,
we simply need to check for this bit.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Michael Davidsaver <mdavidsaver@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/arm/cpu_tcg.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c
index 0d5adccf1a7..da348938407 100644
--- a/target/arm/cpu_tcg.c
+++ b/target/arm/cpu_tcg.c
@@ -23,6 +23,11 @@
 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
 
 #if !defined(CONFIG_USER_ONLY) && defined(CONFIG_TCG)
+static bool arm_v7m_cpu_has_work(CPUState *cs)
+{
+    return cs->interrupt_request & CPU_INTERRUPT_HARD;
+}
+
 static bool arm_v7m_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
 {
     CPUClass *cc = CPU_GET_CLASS(cs);
@@ -920,6 +925,7 @@ static void arm_v7m_class_init(ObjectClass *oc, void *data)
 
     acc->info = data;
 #ifdef CONFIG_TCG
+    cc->has_work = arm_v7m_cpu_has_work;
     cc->tcg_ops = &arm_v7m_tcg_ops;
 #endif /* CONFIG_TCG */
 
-- 
2.31.1

[PATCH v5 02/31] accel/tcg: Restrict cpu_handle_halt() to sysemu

[Philippe Mathieu-Daudé]

Commit 372579427a5 ("tcg: enable thread-per-vCPU") added the following
comment describing EXCP_HALTED in qemu_tcg_cpu_thread_fn():

    case EXCP_HALTED:
         /* during start-up the vCPU is reset and the thread is
          * kicked several times. If we don't ensure we go back
          * to sleep in the halted state we won't cleanly
          * start-up when the vCPU is enabled.
          *
          * cpu->halted should ensure we sleep in wait_io_event
          */
         g_assert(cpu->halted);
         break;

qemu_wait_io_event() is sysemu-specific, so we can restrict the
cpu_handle_halt() call in cpu_exec() to system emulation.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 accel/tcg/cpu-exec.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 75dbc1e4e33..5fd1ed34222 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -588,8 +588,9 @@ static inline void tb_add_jump(TranslationBlock *tb, int n,
 
 static inline bool cpu_handle_halt(CPUState *cpu)
 {
+#ifndef CONFIG_USER_ONLY
     if (cpu->halted) {
-#if defined(TARGET_I386) && !defined(CONFIG_USER_ONLY)
+#if defined(TARGET_I386)
         if (cpu->interrupt_request & CPU_INTERRUPT_POLL) {
             X86CPU *x86_cpu = X86_CPU(cpu);
             qemu_mutex_lock_iothread();
@@ -597,13 +598,14 @@ static inline bool cpu_handle_halt(CPUState *cpu)
             cpu_reset_interrupt(cpu, CPU_INTERRUPT_POLL);
             qemu_mutex_unlock_iothread();
         }
-#endif
+#endif /* TARGET_I386 */
         if (!cpu_has_work(cpu)) {
             return true;
         }
 
         cpu->halted = 0;
     }
+#endif /* !CONFIG_USER_ONLY */
 
     return false;
 }
-- 
2.31.1

[PATCH v5 03/31] hw/core: Restrict cpu_has_work() to sysemu

[Philippe Mathieu-Daudé]

cpu_has_work() is only called from system emulation code.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/hw/core/cpu.h | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index bc864564cee..2bd563e221f 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -538,6 +538,22 @@ enum CPUDumpFlags {
 void cpu_dump_state(CPUState *cpu, FILE *f, int flags);
 
 #ifndef CONFIG_USER_ONLY
+/**
+ * cpu_has_work:
+ * @cpu: The vCPU to check.
+ *
+ * Checks whether the CPU has work to do.
+ *
+ * Returns: %true if the CPU has work, %false otherwise.
+ */
+static inline bool cpu_has_work(CPUState *cpu)
+{
+    CPUClass *cc = CPU_GET_CLASS(cpu);
+
+    g_assert(cc->has_work);
+    return cc->has_work(cpu);
+}
+
 /**
  * cpu_get_phys_page_attrs_debug:
  * @cpu: The CPU to obtain the physical page address for.
@@ -636,22 +652,6 @@ CPUState *cpu_create(const char *typename);
  */
 const char *parse_cpu_option(const char *cpu_option);
 
-/**
- * cpu_has_work:
- * @cpu: The vCPU to check.
- *
- * Checks whether the CPU has work to do.
- *
- * Returns: %true if the CPU has work, %false otherwise.
- */
-static inline bool cpu_has_work(CPUState *cpu)
-{
-    CPUClass *cc = CPU_GET_CLASS(cpu);
-
-    g_assert(cc->has_work);
-    return cc->has_work(cpu);
-}
-
 /**
  * qemu_cpu_is_self:
  * @cpu: The vCPU to check against.
-- 
2.31.1

[PATCH v5 04/31] hw/core: Un-inline cpu_has_work()

[Philippe Mathieu-Daudé]

We want to make cpu_has_work() per-accelerator. Only declare its
prototype and move its definition to softmmu/cpus.c.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/hw/core/cpu.h | 8 +-------
 softmmu/cpus.c        | 8 ++++++++
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index 2bd563e221f..e2dd171a13f 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -546,13 +546,7 @@ void cpu_dump_state(CPUState *cpu, FILE *f, int flags);
  *
  * Returns: %true if the CPU has work, %false otherwise.
  */
-static inline bool cpu_has_work(CPUState *cpu)
-{
-    CPUClass *cc = CPU_GET_CLASS(cpu);
-
-    g_assert(cc->has_work);
-    return cc->has_work(cpu);
-}
+bool cpu_has_work(CPUState *cpu);
 
 /**
  * cpu_get_phys_page_attrs_debug:
diff --git a/softmmu/cpus.c b/softmmu/cpus.c
index 071085f840b..7e2cb2c571b 100644
--- a/softmmu/cpus.c
+++ b/softmmu/cpus.c
@@ -251,6 +251,14 @@ void cpu_interrupt(CPUState *cpu, int mask)
     }
 }
 
+bool cpu_has_work(CPUState *cpu)
+{
+    CPUClass *cc = CPU_GET_CLASS(cpu);
+
+    g_assert(cc->has_work);
+    return cc->has_work(cpu);
+}
+
 static int do_vm_stop(RunState state, bool send_stop)
 {
     int ret = 0;
-- 
2.31.1

[PATCH v5 05/31] sysemu: Introduce AccelOpsClass::has_work()

[Philippe Mathieu-Daudé]

Introduce an accelerator-specific has_work() handler.
Eventually call it from cpu_has_work().

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/sysemu/accel-ops.h | 5 +++++
 softmmu/cpus.c             | 9 +++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/include/sysemu/accel-ops.h b/include/sysemu/accel-ops.h
index 032f6979d76..de83f095f20 100644
--- a/include/sysemu/accel-ops.h
+++ b/include/sysemu/accel-ops.h
@@ -31,6 +31,11 @@ struct AccelOpsClass {
     void (*create_vcpu_thread)(CPUState *cpu); /* MANDATORY NON-NULL */
     void (*kick_vcpu_thread)(CPUState *cpu);
 
+    /**
+     * @has_work: Callback for checking if there is work to do.
+     */
+    bool (*has_work)(CPUState *cpu);
+
     void (*synchronize_post_reset)(CPUState *cpu);
     void (*synchronize_post_init)(CPUState *cpu);
     void (*synchronize_state)(CPUState *cpu);
diff --git a/softmmu/cpus.c b/softmmu/cpus.c
index 7e2cb2c571b..e59046ce39c 100644
--- a/softmmu/cpus.c
+++ b/softmmu/cpus.c
@@ -255,8 +255,13 @@ bool cpu_has_work(CPUState *cpu)
 {
     CPUClass *cc = CPU_GET_CLASS(cpu);
 
-    g_assert(cc->has_work);
-    return cc->has_work(cpu);
+    if (cc->has_work) {
+        return cc->has_work(cpu);
+    }
+    if (cpus_accel->has_work) {
+        return cpus_accel->has_work(cpu);
+    }
+    g_assert_not_reached();
 }
 
 static int do_vm_stop(RunState state, bool send_stop)
-- 
2.31.1

[PATCH v5 06/31] accel/kvm: Implement AccelOpsClass::has_work()

[Philippe Mathieu-Daudé]

Implement KVM has_work() handler in AccelOpsClass and
remove it from cpu_thread_is_idle() since cpu_has_work()
is already called.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 accel/kvm/kvm-accel-ops.c | 6 ++++++
 softmmu/cpus.c            | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/accel/kvm/kvm-accel-ops.c b/accel/kvm/kvm-accel-ops.c
index 7516c67a3f5..6f4d5df3a0d 100644
--- a/accel/kvm/kvm-accel-ops.c
+++ b/accel/kvm/kvm-accel-ops.c
@@ -74,6 +74,11 @@ static void kvm_start_vcpu_thread(CPUState *cpu)
                        cpu, QEMU_THREAD_JOINABLE);
 }
 
+static bool kvm_cpu_has_work(CPUState *cpu)
+{
+    return kvm_halt_in_kernel();
+}
+
 static void kvm_accel_ops_class_init(ObjectClass *oc, void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
@@ -83,6 +88,7 @@ static void kvm_accel_ops_class_init(ObjectClass *oc, void *data)
     ops->synchronize_post_init = kvm_cpu_synchronize_post_init;
     ops->synchronize_state = kvm_cpu_synchronize_state;
     ops->synchronize_pre_loadvm = kvm_cpu_synchronize_pre_loadvm;
+    ops->has_work = kvm_cpu_has_work;
 }
 
 static const TypeInfo kvm_accel_ops_type = {
diff --git a/softmmu/cpus.c b/softmmu/cpus.c
index e59046ce39c..b22804c4193 100644
--- a/softmmu/cpus.c
+++ b/softmmu/cpus.c
@@ -90,7 +90,7 @@ bool cpu_thread_is_idle(CPUState *cpu)
         return true;
     }
     if (!cpu->halted || cpu_has_work(cpu) ||
-        kvm_halt_in_kernel() || whpx_apic_in_platform()) {
+        whpx_apic_in_platform()) {
         return false;
     }
     return true;
-- 
2.31.1

[PATCH v5 07/31] accel/whpx: Implement AccelOpsClass::has_work()

[Philippe Mathieu-Daudé]

Implement WHPX has_work() handler in AccelOpsClass and
remove it from cpu_thread_is_idle() since cpu_has_work()
is already called.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 softmmu/cpus.c                    | 4 +---
 target/i386/whpx/whpx-accel-ops.c | 6 ++++++
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/softmmu/cpus.c b/softmmu/cpus.c
index b22804c4193..98b4049aba7 100644
--- a/softmmu/cpus.c
+++ b/softmmu/cpus.c
@@ -41,7 +41,6 @@
 #include "sysemu/replay.h"
 #include "sysemu/runstate.h"
 #include "sysemu/cpu-timers.h"
-#include "sysemu/whpx.h"
 #include "hw/boards.h"
 #include "hw/hw.h"
 #include "trace.h"
@@ -89,8 +88,7 @@ bool cpu_thread_is_idle(CPUState *cpu)
     if (cpu_is_stopped(cpu)) {
         return true;
     }
-    if (!cpu->halted || cpu_has_work(cpu) ||
-        whpx_apic_in_platform()) {
+    if (!cpu->halted || cpu_has_work(cpu)) {
         return false;
     }
     return true;
diff --git a/target/i386/whpx/whpx-accel-ops.c b/target/i386/whpx/whpx-accel-ops.c
index 6bc47c53098..1f9c6d52c27 100644
--- a/target/i386/whpx/whpx-accel-ops.c
+++ b/target/i386/whpx/whpx-accel-ops.c
@@ -83,6 +83,11 @@ static void whpx_kick_vcpu_thread(CPUState *cpu)
     }
 }
 
+static bool whpx_cpu_has_work(CPUState *cpu)
+{
+    return whpx_apic_in_platform();
+}
+
 static void whpx_accel_ops_class_init(ObjectClass *oc, void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
@@ -94,6 +99,7 @@ static void whpx_accel_ops_class_init(ObjectClass *oc, void *data)
     ops->synchronize_post_init = whpx_cpu_synchronize_post_init;
     ops->synchronize_state = whpx_cpu_synchronize_state;
     ops->synchronize_pre_loadvm = whpx_cpu_synchronize_pre_loadvm;
+    ops->has_work = whpx_cpu_has_work;
 }
 
 static const TypeInfo whpx_accel_ops_type = {
-- 
2.31.1

[PATCH v5 08/31] accel/tcg: Implement AccelOpsClass::has_work() as stub

[Philippe Mathieu-Daudé]

Add TCG target-specific has_work() handler in TCGCPUOps,
and add tcg_cpu_has_work() as AccelOpsClass has_work()
implementation.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/hw/core/tcg-cpu-ops.h |  4 ++++
 accel/tcg/tcg-accel-ops.c     | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/include/hw/core/tcg-cpu-ops.h b/include/hw/core/tcg-cpu-ops.h
index 55123cb4d22..4a4c4053e3b 100644
--- a/include/hw/core/tcg-cpu-ops.h
+++ b/include/hw/core/tcg-cpu-ops.h
@@ -66,6 +66,10 @@ struct TCGCPUOps {
     void (*do_interrupt)(CPUState *cpu);
 #endif /* !CONFIG_USER_ONLY || !TARGET_I386 */
 #ifdef CONFIG_SOFTMMU
+    /**
+     * @has_work: Callback for checking if there is work to do.
+     */
+    bool (*has_work)(CPUState *cpu);
     /** @cpu_exec_interrupt: Callback for processing interrupts in cpu_exec */
     bool (*cpu_exec_interrupt)(CPUState *cpu, int interrupt_request);
     /**
diff --git a/accel/tcg/tcg-accel-ops.c b/accel/tcg/tcg-accel-ops.c
index 1a8e8390bd6..f539ba53806 100644
--- a/accel/tcg/tcg-accel-ops.c
+++ b/accel/tcg/tcg-accel-ops.c
@@ -32,6 +32,7 @@
 #include "qemu/main-loop.h"
 #include "qemu/guest-random.h"
 #include "exec/exec-all.h"
+#include "hw/core/tcg-cpu-ops.h"
 
 #include "tcg-accel-ops.h"
 #include "tcg-accel-ops-mttcg.h"
@@ -73,6 +74,14 @@ int tcg_cpus_exec(CPUState *cpu)
     return ret;
 }
 
+static bool tcg_cpu_has_work(CPUState *cpu)
+{
+    CPUClass *cc = CPU_GET_CLASS(cpu);
+
+    g_assert(cc->tcg_ops->has_work);
+    return cc->tcg_ops->has_work(cpu);
+}
+
 /* mask must never be zero, except for A20 change call */
 void tcg_handle_interrupt(CPUState *cpu, int mask)
 {
@@ -108,6 +117,7 @@ static void tcg_accel_ops_init(AccelOpsClass *ops)
         ops->kick_vcpu_thread = rr_kick_vcpu_thread;
         ops->handle_interrupt = tcg_handle_interrupt;
     }
+    ops->has_work = tcg_cpu_has_work;
 }
 
 static void tcg_accel_ops_class_init(ObjectClass *oc, void *data)
-- 
2.31.1

[PATCH v5 09/31] target/alpha: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/alpha/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/alpha/cpu.c b/target/alpha/cpu.c
index 93e16a2ffb4..1ca601cac5b 100644
--- a/target/alpha/cpu.c
+++ b/target/alpha/cpu.c
@@ -33,6 +33,7 @@ static void alpha_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.pc = value;
 }
 
+#if !defined(CONFIG_USER_ONLY)
 static bool alpha_cpu_has_work(CPUState *cs)
 {
     /* Here we are checking to see if the CPU should wake up from HALT.
@@ -47,6 +48,7 @@ static bool alpha_cpu_has_work(CPUState *cs)
                                     | CPU_INTERRUPT_SMP
                                     | CPU_INTERRUPT_MCHK);
 }
+#endif /* !CONFIG_USER_ONLY */
 
 static void alpha_cpu_disas_set_info(CPUState *cpu, disassemble_info *info)
 {
@@ -221,6 +223,7 @@ static const struct TCGCPUOps alpha_tcg_ops = {
     .tlb_fill = alpha_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = alpha_cpu_has_work,
     .cpu_exec_interrupt = alpha_cpu_exec_interrupt,
     .do_interrupt = alpha_cpu_do_interrupt,
     .do_transaction_failed = alpha_cpu_do_transaction_failed,
@@ -238,7 +241,6 @@ static void alpha_cpu_class_init(ObjectClass *oc, void *data)
                                     &acc->parent_realize);
 
     cc->class_by_name = alpha_cpu_class_by_name;
-    cc->has_work = alpha_cpu_has_work;
     cc->dump_state = alpha_cpu_dump_state;
     cc->set_pc = alpha_cpu_set_pc;
     cc->gdb_read_register = alpha_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 10/31] target/arm: Restrict has_work() handler to sysemu and TCG

[Philippe Mathieu-Daudé]

Restrict has_work() to TCG sysemu.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/arm/cpu.c     | 7 +++++--
 target/arm/cpu_tcg.c | 2 +-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index ba0741b20e4..e11aa625a5f 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -73,8 +73,8 @@ void arm_cpu_synchronize_from_tb(CPUState *cs,
         env->regs[15] = tb->pc;
     }
 }
-#endif /* CONFIG_TCG */
 
+#ifndef CONFIG_USER_ONLY
 static bool arm_cpu_has_work(CPUState *cs)
 {
     ARMCPU *cpu = ARM_CPU(cs);
@@ -85,6 +85,9 @@ static bool arm_cpu_has_work(CPUState *cs)
          | CPU_INTERRUPT_VFIQ | CPU_INTERRUPT_VIRQ
          | CPU_INTERRUPT_EXITTB);
 }
+#endif /* !CONFIG_USER_ONLY */
+
+#endif /* CONFIG_TCG */
 
 void arm_register_pre_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook,
                                  void *opaque)
@@ -2017,6 +2020,7 @@ static const struct TCGCPUOps arm_tcg_ops = {
     .debug_excp_handler = arm_debug_excp_handler,
 
 #if !defined(CONFIG_USER_ONLY)
+    .has_work = arm_cpu_has_work,
     .cpu_exec_interrupt = arm_cpu_exec_interrupt,
     .do_interrupt = arm_cpu_do_interrupt,
     .do_transaction_failed = arm_cpu_do_transaction_failed,
@@ -2041,7 +2045,6 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_reset(dc, arm_cpu_reset, &acc->parent_reset);
 
     cc->class_by_name = arm_cpu_class_by_name;
-    cc->has_work = arm_cpu_has_work;
     cc->dump_state = arm_cpu_dump_state;
     cc->set_pc = arm_cpu_set_pc;
     cc->gdb_read_register = arm_cpu_gdb_read_register;
diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c
index da348938407..a3df208249a 100644
--- a/target/arm/cpu_tcg.c
+++ b/target/arm/cpu_tcg.c
@@ -907,6 +907,7 @@ static const struct TCGCPUOps arm_v7m_tcg_ops = {
     .debug_excp_handler = arm_debug_excp_handler,
 
 #if !defined(CONFIG_USER_ONLY)
+    .has_work = arm_v7m_cpu_has_work,
     .cpu_exec_interrupt = arm_v7m_cpu_exec_interrupt,
     .do_interrupt = arm_v7m_cpu_do_interrupt,
     .do_transaction_failed = arm_cpu_do_transaction_failed,
@@ -925,7 +926,6 @@ static void arm_v7m_class_init(ObjectClass *oc, void *data)
 
     acc->info = data;
 #ifdef CONFIG_TCG
-    cc->has_work = arm_v7m_cpu_has_work;
     cc->tcg_ops = &arm_v7m_tcg_ops;
 #endif /* CONFIG_TCG */
 
-- 
2.31.1

[PATCH v5 11/31] target/avr: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/avr/cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/avr/cpu.c b/target/avr/cpu.c
index 5d70e34dd54..6d51f91ca2c 100644
--- a/target/avr/cpu.c
+++ b/target/avr/cpu.c
@@ -195,6 +195,7 @@ static const struct SysemuCPUOps avr_sysemu_ops = {
 static const struct TCGCPUOps avr_tcg_ops = {
     .initialize = avr_cpu_tcg_init,
     .synchronize_from_tb = avr_cpu_synchronize_from_tb,
+    .has_work = avr_cpu_has_work,
     .cpu_exec_interrupt = avr_cpu_exec_interrupt,
     .tlb_fill = avr_cpu_tlb_fill,
     .do_interrupt = avr_cpu_do_interrupt,
@@ -211,7 +212,6 @@ static void avr_cpu_class_init(ObjectClass *oc, void *data)
 
     cc->class_by_name = avr_cpu_class_by_name;
 
-    cc->has_work = avr_cpu_has_work;
     cc->dump_state = avr_cpu_dump_state;
     cc->set_pc = avr_cpu_set_pc;
     cc->memory_rw_debug = avr_cpu_memory_rw_debug;
-- 
2.31.1

[PATCH v5 12/31] target/cris: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/cris/cpu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/target/cris/cpu.c b/target/cris/cpu.c
index c2e7483f5bd..b2761f8b110 100644
--- a/target/cris/cpu.c
+++ b/target/cris/cpu.c
@@ -35,10 +35,12 @@ static void cris_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.pc = value;
 }
 
+#if !defined(CONFIG_USER_ONLY)
 static bool cris_cpu_has_work(CPUState *cs)
 {
     return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI);
 }
+#endif /* !CONFIG_USER_ONLY */
 
 static void cris_cpu_reset(DeviceState *dev)
 {
@@ -208,6 +210,7 @@ static const struct TCGCPUOps crisv10_tcg_ops = {
     .tlb_fill = cris_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = cris_cpu_has_work,
     .cpu_exec_interrupt = cris_cpu_exec_interrupt,
     .do_interrupt = crisv10_cpu_do_interrupt,
 #endif /* !CONFIG_USER_ONLY */
@@ -218,6 +221,7 @@ static const struct TCGCPUOps crisv32_tcg_ops = {
     .tlb_fill = cris_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = cris_cpu_has_work,
     .cpu_exec_interrupt = cris_cpu_exec_interrupt,
     .do_interrupt = cris_cpu_do_interrupt,
 #endif /* !CONFIG_USER_ONLY */
@@ -294,7 +298,6 @@ static void cris_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_reset(dc, cris_cpu_reset, &ccc->parent_reset);
 
     cc->class_by_name = cris_cpu_class_by_name;
-    cc->has_work = cris_cpu_has_work;
     cc->dump_state = cris_cpu_dump_state;
     cc->set_pc = cris_cpu_set_pc;
     cc->gdb_read_register = cris_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 13/31] target/hexagon: Remove unused has_work() handler

[Philippe Mathieu-Daudé]

has_work() is sysemu specific, and Hexagon target only provides
a linux-user implementation. Remove the unused hexagon_cpu_has_work().

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/hexagon/cpu.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/target/hexagon/cpu.c b/target/hexagon/cpu.c
index 3338365c16e..aa01974807c 100644
--- a/target/hexagon/cpu.c
+++ b/target/hexagon/cpu.c
@@ -189,11 +189,6 @@ static void hexagon_cpu_synchronize_from_tb(CPUState *cs,
     env->gpr[HEX_REG_PC] = tb->pc;
 }
 
-static bool hexagon_cpu_has_work(CPUState *cs)
-{
-    return true;
-}
-
 void restore_state_to_opc(CPUHexagonState *env, TranslationBlock *tb,
                           target_ulong *data)
 {
@@ -287,7 +282,6 @@ static void hexagon_cpu_class_init(ObjectClass *c, void *data)
     device_class_set_parent_reset(dc, hexagon_cpu_reset, &mcc->parent_reset);
 
     cc->class_by_name = hexagon_cpu_class_by_name;
-    cc->has_work = hexagon_cpu_has_work;
     cc->dump_state = hexagon_dump_state;
     cc->set_pc = hexagon_cpu_set_pc;
     cc->gdb_read_register = hexagon_gdb_read_register;
-- 
2.31.1

[PATCH v5 14/31] target/hppa: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/hppa/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/hppa/cpu.c b/target/hppa/cpu.c
index e8edd189bfc..be940ae2246 100644
--- a/target/hppa/cpu.c
+++ b/target/hppa/cpu.c
@@ -60,10 +60,12 @@ static void hppa_cpu_synchronize_from_tb(CPUState *cs,
     cpu->env.psw_n = (tb->flags & PSW_N) != 0;
 }
 
+#if !defined(CONFIG_USER_ONLY)
 static bool hppa_cpu_has_work(CPUState *cs)
 {
     return cs->interrupt_request & CPU_INTERRUPT_HARD;
 }
+#endif /* !CONFIG_USER_ONLY */
 
 static void hppa_cpu_disas_set_info(CPUState *cs, disassemble_info *info)
 {
@@ -147,6 +149,7 @@ static const struct TCGCPUOps hppa_tcg_ops = {
     .tlb_fill = hppa_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = hppa_cpu_has_work,
     .cpu_exec_interrupt = hppa_cpu_exec_interrupt,
     .do_interrupt = hppa_cpu_do_interrupt,
     .do_unaligned_access = hppa_cpu_do_unaligned_access,
@@ -163,7 +166,6 @@ static void hppa_cpu_class_init(ObjectClass *oc, void *data)
                                     &acc->parent_realize);
 
     cc->class_by_name = hppa_cpu_class_by_name;
-    cc->has_work = hppa_cpu_has_work;
     cc->dump_state = hppa_cpu_dump_state;
     cc->set_pc = hppa_cpu_set_pc;
     cc->gdb_read_register = hppa_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 15/31] target/i386: Restrict has_work() handler to sysemu and TCG

[Philippe Mathieu-Daudé]

Restrict has_work() to TCG sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/i386/cpu.c         | 6 ------
 target/i386/tcg/tcg-cpu.c | 8 +++++++-
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 6b029f1bdf1..36a1c5f3fd2 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -6554,11 +6554,6 @@ int x86_cpu_pending_interrupt(CPUState *cs, int interrupt_request)
     return 0;
 }
 
-static bool x86_cpu_has_work(CPUState *cs)
-{
-    return x86_cpu_pending_interrupt(cs, cs->interrupt_request) != 0;
-}
-
 static void x86_disas_set_info(CPUState *cs, disassemble_info *info)
 {
     X86CPU *cpu = X86_CPU(cs);
@@ -6763,7 +6758,6 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
 
     cc->class_by_name = x86_cpu_class_by_name;
     cc->parse_features = x86_cpu_parse_featurestr;
-    cc->has_work = x86_cpu_has_work;
     cc->dump_state = x86_cpu_dump_state;
     cc->set_pc = x86_cpu_set_pc;
     cc->gdb_read_register = x86_cpu_gdb_read_register;
diff --git a/target/i386/tcg/tcg-cpu.c b/target/i386/tcg/tcg-cpu.c
index 3ecfae34cb5..aef050d0898 100644
--- a/target/i386/tcg/tcg-cpu.c
+++ b/target/i386/tcg/tcg-cpu.c
@@ -55,6 +55,11 @@ static void x86_cpu_synchronize_from_tb(CPUState *cs,
 }
 
 #ifndef CONFIG_USER_ONLY
+static bool x86_cpu_has_work(CPUState *cs)
+{
+    return x86_cpu_pending_interrupt(cs, cs->interrupt_request) != 0;
+}
+
 static bool x86_debug_check_breakpoint(CPUState *cs)
 {
     X86CPU *cpu = X86_CPU(cs);
@@ -63,7 +68,7 @@ static bool x86_debug_check_breakpoint(CPUState *cs)
     /* RF disables all architectural breakpoints. */
     return !(env->eflags & RF_MASK);
 }
-#endif
+#endif /* CONFIG_USER_ONLY */
 
 #include "hw/core/tcg-cpu-ops.h"
 
@@ -76,6 +81,7 @@ static const struct TCGCPUOps x86_tcg_ops = {
 #ifdef CONFIG_USER_ONLY
     .fake_user_interrupt = x86_cpu_do_interrupt,
 #else
+    .has_work = x86_cpu_has_work,
     .do_interrupt = x86_cpu_do_interrupt,
     .cpu_exec_interrupt = x86_cpu_exec_interrupt,
     .debug_excp_handler = breakpoint_handler,
-- 
2.31.1

[PATCH v5 16/31] target/m68k: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/m68k/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c
index 66d22d11895..ad5d26b5c9e 100644
--- a/target/m68k/cpu.c
+++ b/target/m68k/cpu.c
@@ -31,10 +31,12 @@ static void m68k_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.pc = value;
 }
 
+#if !defined(CONFIG_USER_ONLY)
 static bool m68k_cpu_has_work(CPUState *cs)
 {
     return cs->interrupt_request & CPU_INTERRUPT_HARD;
 }
+#endif /* !CONFIG_USER_ONLY */
 
 static void m68k_set_feature(CPUM68KState *env, int feature)
 {
@@ -518,6 +520,7 @@ static const struct TCGCPUOps m68k_tcg_ops = {
     .tlb_fill = m68k_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = m68k_cpu_has_work,
     .cpu_exec_interrupt = m68k_cpu_exec_interrupt,
     .do_interrupt = m68k_cpu_do_interrupt,
     .do_transaction_failed = m68k_cpu_transaction_failed,
@@ -535,7 +538,6 @@ static void m68k_cpu_class_init(ObjectClass *c, void *data)
     device_class_set_parent_reset(dc, m68k_cpu_reset, &mcc->parent_reset);
 
     cc->class_by_name = m68k_cpu_class_by_name;
-    cc->has_work = m68k_cpu_has_work;
     cc->dump_state = m68k_cpu_dump_state;
     cc->set_pc = m68k_cpu_set_pc;
     cc->gdb_read_register = m68k_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 17/31] target/microblaze: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/microblaze/cpu.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
index 15db277925f..36e6e540483 100644
--- a/target/microblaze/cpu.c
+++ b/target/microblaze/cpu.c
@@ -92,12 +92,13 @@ static void mb_cpu_synchronize_from_tb(CPUState *cs,
     cpu->env.iflags = tb->flags & IFLAGS_TB_MASK;
 }
 
+#ifndef CONFIG_USER_ONLY
+
 static bool mb_cpu_has_work(CPUState *cs)
 {
     return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI);
 }
 
-#ifndef CONFIG_USER_ONLY
 static void mb_cpu_ns_axi_dp(void *opaque, int irq, int level)
 {
     MicroBlazeCPU *cpu = opaque;
@@ -142,7 +143,7 @@ static void microblaze_cpu_set_irq(void *opaque, int irq, int level)
         cpu_reset_interrupt(cs, type);
     }
 }
-#endif
+#endif /* !CONFIG_USER_ONLY */
 
 static void mb_cpu_reset(DeviceState *dev)
 {
@@ -368,6 +369,7 @@ static const struct TCGCPUOps mb_tcg_ops = {
     .tlb_fill = mb_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = mb_cpu_has_work,
     .cpu_exec_interrupt = mb_cpu_exec_interrupt,
     .do_interrupt = mb_cpu_do_interrupt,
     .do_transaction_failed = mb_cpu_transaction_failed,
@@ -386,8 +388,6 @@ static void mb_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_reset(dc, mb_cpu_reset, &mcc->parent_reset);
 
     cc->class_by_name = mb_cpu_class_by_name;
-    cc->has_work = mb_cpu_has_work;
-
     cc->dump_state = mb_cpu_dump_state;
     cc->set_pc = mb_cpu_set_pc;
     cc->gdb_read_register = mb_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 18/31] target/mips: Restrict has_work() handler to sysemu and TCG

[Philippe Mathieu-Daudé]

Restrict has_work() to TCG sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/mips/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/mips/cpu.c b/target/mips/cpu.c
index 00e0c55d0e4..3639c03f8ea 100644
--- a/target/mips/cpu.c
+++ b/target/mips/cpu.c
@@ -128,6 +128,7 @@ static void mips_cpu_set_pc(CPUState *cs, vaddr value)
     mips_env_set_pc(&cpu->env, value);
 }
 
+#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
 static bool mips_cpu_has_work(CPUState *cs)
 {
     MIPSCPU *cpu = MIPS_CPU(cs);
@@ -172,6 +173,7 @@ static bool mips_cpu_has_work(CPUState *cs)
     }
     return has_work;
 }
+#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 
 #include "cpu-defs.c.inc"
 
@@ -542,6 +544,7 @@ static const struct TCGCPUOps mips_tcg_ops = {
     .tlb_fill = mips_cpu_tlb_fill,
 
 #if !defined(CONFIG_USER_ONLY)
+    .has_work = mips_cpu_has_work,
     .cpu_exec_interrupt = mips_cpu_exec_interrupt,
     .do_interrupt = mips_cpu_do_interrupt,
     .do_transaction_failed = mips_cpu_do_transaction_failed,
@@ -563,7 +566,6 @@ static void mips_cpu_class_init(ObjectClass *c, void *data)
     device_class_set_props(dc, mips_cpu_properties);
 
     cc->class_by_name = mips_cpu_class_by_name;
-    cc->has_work = mips_cpu_has_work;
     cc->dump_state = mips_cpu_dump_state;
     cc->set_pc = mips_cpu_set_pc;
     cc->gdb_read_register = mips_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 19/31] target/nios2: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/nios2/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/nios2/cpu.c b/target/nios2/cpu.c
index 947bb09bc1e..9938d7c2919 100644
--- a/target/nios2/cpu.c
+++ b/target/nios2/cpu.c
@@ -34,10 +34,12 @@ static void nios2_cpu_set_pc(CPUState *cs, vaddr value)
     env->regs[R_PC] = value;
 }
 
+#if !defined(CONFIG_USER_ONLY)
 static bool nios2_cpu_has_work(CPUState *cs)
 {
     return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI);
 }
+#endif /* !CONFIG_USER_ONLY */
 
 static void nios2_cpu_reset(DeviceState *dev)
 {
@@ -223,6 +225,7 @@ static const struct TCGCPUOps nios2_tcg_ops = {
     .tlb_fill = nios2_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = nios2_cpu_has_work,
     .cpu_exec_interrupt = nios2_cpu_exec_interrupt,
     .do_interrupt = nios2_cpu_do_interrupt,
     .do_unaligned_access = nios2_cpu_do_unaligned_access,
@@ -241,7 +244,6 @@ static void nios2_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_reset(dc, nios2_cpu_reset, &ncc->parent_reset);
 
     cc->class_by_name = nios2_cpu_class_by_name;
-    cc->has_work = nios2_cpu_has_work;
     cc->dump_state = nios2_cpu_dump_state;
     cc->set_pc = nios2_cpu_set_pc;
     cc->disas_set_info = nios2_cpu_disas_set_info;
-- 
2.31.1

[PATCH v5 20/31] target/openrisc: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/openrisc/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/openrisc/cpu.c b/target/openrisc/cpu.c
index 27cb04152f9..3c368a1bde7 100644
--- a/target/openrisc/cpu.c
+++ b/target/openrisc/cpu.c
@@ -30,11 +30,13 @@ static void openrisc_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.dflag = 0;
 }
 
+#if !defined(CONFIG_USER_ONLY)
 static bool openrisc_cpu_has_work(CPUState *cs)
 {
     return cs->interrupt_request & (CPU_INTERRUPT_HARD |
                                     CPU_INTERRUPT_TIMER);
 }
+#endif /* !CONFIG_USER_ONLY */
 
 static void openrisc_disas_set_info(CPUState *cpu, disassemble_info *info)
 {
@@ -189,6 +191,7 @@ static const struct TCGCPUOps openrisc_tcg_ops = {
     .tlb_fill = openrisc_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = openrisc_cpu_has_work,
     .cpu_exec_interrupt = openrisc_cpu_exec_interrupt,
     .do_interrupt = openrisc_cpu_do_interrupt,
 #endif /* !CONFIG_USER_ONLY */
@@ -205,7 +208,6 @@ static void openrisc_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_reset(dc, openrisc_cpu_reset, &occ->parent_reset);
 
     cc->class_by_name = openrisc_cpu_class_by_name;
-    cc->has_work = openrisc_cpu_has_work;
     cc->dump_state = openrisc_cpu_dump_state;
     cc->set_pc = openrisc_cpu_set_pc;
     cc->gdb_read_register = openrisc_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 21/31] target/ppc: Introduce PowerPCCPUClass::has_work()

[Philippe Mathieu-Daudé]

We're moving the hook from CPUState to TCGCPUOps. TCGCPUOps is
a const structure, so to avoid creating multiple versions of
the same structure, simply changing the has_work() handler,
introduce yet another indirection with a has_work() handler in
PowerPCCPUClass, and ppc_cpu_has_work() method which dispatch
to it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/ppc/cpu-qom.h  |  1 +
 target/ppc/cpu_init.c | 23 ++++++++++++++---------
 2 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/target/ppc/cpu-qom.h b/target/ppc/cpu-qom.h
index 5800fa324e8..36110112506 100644
--- a/target/ppc/cpu-qom.h
+++ b/target/ppc/cpu-qom.h
@@ -188,6 +188,7 @@ struct PowerPCCPUClass {
     uint32_t flags;
     int bfd_mach;
     uint32_t l1_dcache_size, l1_icache_size;
+    bool (*has_work)(CPUState *cpu);
 #ifndef CONFIG_USER_ONLY
     unsigned int gdb_num_sprs;
     const char *gdb_spr_xml;
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index 6aad01d1d3a..2f7d262b176 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -7621,7 +7621,6 @@ POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
-    CPUClass *cc = CPU_CLASS(oc);
 
     dc->fw_name = "PowerPC,POWER7";
     dc->desc = "POWER7";
@@ -7630,7 +7629,7 @@ POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
     pcc->pcr_supported = PCR_COMPAT_2_06 | PCR_COMPAT_2_05;
     pcc->init_proc = init_proc_POWER7;
     pcc->check_pow = check_pow_nocheck;
-    cc->has_work = cpu_has_work_POWER7;
+    pcc->has_work = cpu_has_work_POWER7;
     pcc->insns_flags = PPC_INSNS_BASE | PPC_ISEL | PPC_STRING | PPC_MFTB |
                        PPC_FLOAT | PPC_FLOAT_FSEL | PPC_FLOAT_FRES |
                        PPC_FLOAT_FSQRT | PPC_FLOAT_FRSQRTE |
@@ -7789,7 +7788,6 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
-    CPUClass *cc = CPU_CLASS(oc);
 
     dc->fw_name = "PowerPC,POWER8";
     dc->desc = "POWER8";
@@ -7798,7 +7796,7 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
     pcc->pcr_supported = PCR_COMPAT_2_07 | PCR_COMPAT_2_06 | PCR_COMPAT_2_05;
     pcc->init_proc = init_proc_POWER8;
     pcc->check_pow = check_pow_nocheck;
-    cc->has_work = cpu_has_work_POWER8;
+    pcc->has_work = cpu_has_work_POWER8;
     pcc->insns_flags = PPC_INSNS_BASE | PPC_ISEL | PPC_STRING | PPC_MFTB |
                        PPC_FLOAT | PPC_FLOAT_FSEL | PPC_FLOAT_FRES |
                        PPC_FLOAT_FSQRT | PPC_FLOAT_FRSQRTE |
@@ -8003,7 +8001,6 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
-    CPUClass *cc = CPU_CLASS(oc);
 
     dc->fw_name = "PowerPC,POWER9";
     dc->desc = "POWER9";
@@ -8013,7 +8010,7 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
                          PCR_COMPAT_2_05;
     pcc->init_proc = init_proc_POWER9;
     pcc->check_pow = check_pow_nocheck;
-    cc->has_work = cpu_has_work_POWER9;
+    pcc->has_work = cpu_has_work_POWER9;
     pcc->insns_flags = PPC_INSNS_BASE | PPC_ISEL | PPC_STRING | PPC_MFTB |
                        PPC_FLOAT | PPC_FLOAT_FSEL | PPC_FLOAT_FRES |
                        PPC_FLOAT_FSQRT | PPC_FLOAT_FRSQRTE |
@@ -8212,7 +8209,6 @@ POWERPC_FAMILY(POWER10)(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
-    CPUClass *cc = CPU_CLASS(oc);
 
     dc->fw_name = "PowerPC,POWER10";
     dc->desc = "POWER10";
@@ -8223,7 +8219,7 @@ POWERPC_FAMILY(POWER10)(ObjectClass *oc, void *data)
                          PCR_COMPAT_2_06 | PCR_COMPAT_2_05;
     pcc->init_proc = init_proc_POWER10;
     pcc->check_pow = check_pow_nocheck;
-    cc->has_work = cpu_has_work_POWER10;
+    pcc->has_work = cpu_has_work_POWER10;
     pcc->insns_flags = PPC_INSNS_BASE | PPC_ISEL | PPC_STRING | PPC_MFTB |
                        PPC_FLOAT | PPC_FLOAT_FSEL | PPC_FLOAT_FRES |
                        PPC_FLOAT_FSQRT | PPC_FLOAT_FRSQRTE |
@@ -8790,7 +8786,7 @@ static void ppc_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.nip = value;
 }
 
-static bool ppc_cpu_has_work(CPUState *cs)
+static bool cpu_has_work_default(CPUState *cs)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
     CPUPPCState *env = &cpu->env;
@@ -8798,6 +8794,14 @@ static bool ppc_cpu_has_work(CPUState *cs)
     return msr_ee && (cs->interrupt_request & CPU_INTERRUPT_HARD);
 }
 
+static bool ppc_cpu_has_work(CPUState *cs)
+{
+    PowerPCCPU *cpu = POWERPC_CPU(cs);
+    PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
+
+    return pcc->has_work(cs);
+}
+
 static void ppc_cpu_reset(DeviceState *dev)
 {
     CPUState *s = CPU(dev);
@@ -9037,6 +9041,7 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_unrealize(dc, ppc_cpu_unrealize,
                                       &pcc->parent_unrealize);
     pcc->pvr_match = ppc_pvr_match_default;
+    pcc->has_work = cpu_has_work_default;
     device_class_set_props(dc, ppc_cpu_properties);
 
     device_class_set_parent_reset(dc, ppc_cpu_reset, &pcc->parent_reset);
-- 
2.31.1

[PATCH v5 22/31] target/ppc: Restrict has_work() handlers to sysemu and TCG

[Philippe Mathieu-Daudé]

Restrict PowerPCCPUClass::has_work() and ppc_cpu_has_work()
- SysemuCPUOps::has_work() implementation - to TCG sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/ppc/cpu-qom.h  |  4 +++-
 target/ppc/cpu_init.c | 24 ++++++++++++++++++------
 2 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/target/ppc/cpu-qom.h b/target/ppc/cpu-qom.h
index 36110112506..ff2bafcde6f 100644
--- a/target/ppc/cpu-qom.h
+++ b/target/ppc/cpu-qom.h
@@ -188,8 +188,10 @@ struct PowerPCCPUClass {
     uint32_t flags;
     int bfd_mach;
     uint32_t l1_dcache_size, l1_icache_size;
-    bool (*has_work)(CPUState *cpu);
 #ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_TCG
+    bool (*has_work)(CPUState *cpu);
+#endif /* CONFIG_TCG */
     unsigned int gdb_num_sprs;
     const char *gdb_spr_xml;
 #endif
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index 2f7d262b176..5c134adeea9 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -7583,6 +7583,7 @@ static bool ppc_pvr_match_power7(PowerPCCPUClass *pcc, uint32_t pvr)
     return false;
 }
 
+#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
 static bool cpu_has_work_POWER7(CPUState *cs)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
@@ -7616,6 +7617,7 @@ static bool cpu_has_work_POWER7(CPUState *cs)
         return msr_ee && (cs->interrupt_request & CPU_INTERRUPT_HARD);
     }
 }
+#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 
 POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
 {
@@ -7629,7 +7631,6 @@ POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
     pcc->pcr_supported = PCR_COMPAT_2_06 | PCR_COMPAT_2_05;
     pcc->init_proc = init_proc_POWER7;
     pcc->check_pow = check_pow_nocheck;
-    pcc->has_work = cpu_has_work_POWER7;
     pcc->insns_flags = PPC_INSNS_BASE | PPC_ISEL | PPC_STRING | PPC_MFTB |
                        PPC_FLOAT | PPC_FLOAT_FSEL | PPC_FLOAT_FRES |
                        PPC_FLOAT_FSQRT | PPC_FLOAT_FRSQRTE |
@@ -7672,6 +7673,7 @@ POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
     pcc->lpcr_pm = LPCR_P7_PECE0 | LPCR_P7_PECE1 | LPCR_P7_PECE2;
     pcc->mmu_model = POWERPC_MMU_2_06;
 #if defined(CONFIG_SOFTMMU)
+    pcc->has_work = cpu_has_work_POWER7;
     pcc->hash64_opts = &ppc_hash64_opts_POWER7;
     pcc->lrg_decr_bits = 32;
 #endif
@@ -7742,6 +7744,7 @@ static bool ppc_pvr_match_power8(PowerPCCPUClass *pcc, uint32_t pvr)
     return false;
 }
 
+#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
 static bool cpu_has_work_POWER8(CPUState *cs)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
@@ -7783,6 +7786,7 @@ static bool cpu_has_work_POWER8(CPUState *cs)
         return msr_ee && (cs->interrupt_request & CPU_INTERRUPT_HARD);
     }
 }
+#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 
 POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
 {
@@ -7796,7 +7800,6 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
     pcc->pcr_supported = PCR_COMPAT_2_07 | PCR_COMPAT_2_06 | PCR_COMPAT_2_05;
     pcc->init_proc = init_proc_POWER8;
     pcc->check_pow = check_pow_nocheck;
-    pcc->has_work = cpu_has_work_POWER8;
     pcc->insns_flags = PPC_INSNS_BASE | PPC_ISEL | PPC_STRING | PPC_MFTB |
                        PPC_FLOAT | PPC_FLOAT_FSEL | PPC_FLOAT_FRES |
                        PPC_FLOAT_FSQRT | PPC_FLOAT_FRSQRTE |
@@ -7846,6 +7849,7 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
                    LPCR_P8_PECE3 | LPCR_P8_PECE4;
     pcc->mmu_model = POWERPC_MMU_2_07;
 #if defined(CONFIG_SOFTMMU)
+    pcc->has_work = cpu_has_work_POWER8;
     pcc->hash64_opts = &ppc_hash64_opts_POWER7;
     pcc->lrg_decr_bits = 32;
     pcc->n_host_threads = 8;
@@ -7939,6 +7943,7 @@ static bool ppc_pvr_match_power9(PowerPCCPUClass *pcc, uint32_t pvr)
     return false;
 }
 
+#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
 static bool cpu_has_work_POWER9(CPUState *cs)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
@@ -7996,6 +8001,7 @@ static bool cpu_has_work_POWER9(CPUState *cs)
         return msr_ee && (cs->interrupt_request & CPU_INTERRUPT_HARD);
     }
 }
+#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 
 POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
 {
@@ -8010,7 +8016,6 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
                          PCR_COMPAT_2_05;
     pcc->init_proc = init_proc_POWER9;
     pcc->check_pow = check_pow_nocheck;
-    pcc->has_work = cpu_has_work_POWER9;
     pcc->insns_flags = PPC_INSNS_BASE | PPC_ISEL | PPC_STRING | PPC_MFTB |
                        PPC_FLOAT | PPC_FLOAT_FSEL | PPC_FLOAT_FRES |
                        PPC_FLOAT_FSQRT | PPC_FLOAT_FRSQRTE |
@@ -8059,6 +8064,7 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
     pcc->lpcr_pm = LPCR_PDEE | LPCR_HDEE | LPCR_EEE | LPCR_DEE | LPCR_OEE;
     pcc->mmu_model = POWERPC_MMU_3_00;
 #if defined(CONFIG_SOFTMMU)
+    pcc->has_work = cpu_has_work_POWER9;
     /* segment page size remain the same */
     pcc->hash64_opts = &ppc_hash64_opts_POWER7;
     pcc->radix_page_info = &POWER9_radix_page_info;
@@ -8147,6 +8153,7 @@ static bool ppc_pvr_match_power10(PowerPCCPUClass *pcc, uint32_t pvr)
     return false;
 }
 
+#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
 static bool cpu_has_work_POWER10(CPUState *cs)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
@@ -8204,6 +8211,7 @@ static bool cpu_has_work_POWER10(CPUState *cs)
         return msr_ee && (cs->interrupt_request & CPU_INTERRUPT_HARD);
     }
 }
+#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 
 POWERPC_FAMILY(POWER10)(ObjectClass *oc, void *data)
 {
@@ -8219,7 +8227,6 @@ POWERPC_FAMILY(POWER10)(ObjectClass *oc, void *data)
                          PCR_COMPAT_2_06 | PCR_COMPAT_2_05;
     pcc->init_proc = init_proc_POWER10;
     pcc->check_pow = check_pow_nocheck;
-    pcc->has_work = cpu_has_work_POWER10;
     pcc->insns_flags = PPC_INSNS_BASE | PPC_ISEL | PPC_STRING | PPC_MFTB |
                        PPC_FLOAT | PPC_FLOAT_FSEL | PPC_FLOAT_FRES |
                        PPC_FLOAT_FSQRT | PPC_FLOAT_FRSQRTE |
@@ -8271,6 +8278,7 @@ POWERPC_FAMILY(POWER10)(ObjectClass *oc, void *data)
     pcc->lpcr_pm = LPCR_PDEE | LPCR_HDEE | LPCR_EEE | LPCR_DEE | LPCR_OEE;
     pcc->mmu_model = POWERPC_MMU_3_00;
 #if defined(CONFIG_SOFTMMU)
+    pcc->has_work = cpu_has_work_POWER10;
     /* segment page size remain the same */
     pcc->hash64_opts = &ppc_hash64_opts_POWER7;
     pcc->radix_page_info = &POWER10_radix_page_info;
@@ -8786,6 +8794,7 @@ static void ppc_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.nip = value;
 }
 
+#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
 static bool cpu_has_work_default(CPUState *cs)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
@@ -8801,6 +8810,7 @@ static bool ppc_cpu_has_work(CPUState *cs)
 
     return pcc->has_work(cs);
 }
+#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 
 static void ppc_cpu_reset(DeviceState *dev)
 {
@@ -9021,6 +9031,7 @@ static const struct TCGCPUOps ppc_tcg_ops = {
   .tlb_fill = ppc_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+  .has_work = ppc_cpu_has_work,
   .cpu_exec_interrupt = ppc_cpu_exec_interrupt,
   .do_interrupt = ppc_cpu_do_interrupt,
   .cpu_exec_enter = ppc_cpu_exec_enter,
@@ -9041,13 +9052,11 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_unrealize(dc, ppc_cpu_unrealize,
                                       &pcc->parent_unrealize);
     pcc->pvr_match = ppc_pvr_match_default;
-    pcc->has_work = cpu_has_work_default;
     device_class_set_props(dc, ppc_cpu_properties);
 
     device_class_set_parent_reset(dc, ppc_cpu_reset, &pcc->parent_reset);
 
     cc->class_by_name = ppc_cpu_class_by_name;
-    cc->has_work = ppc_cpu_has_work;
     cc->dump_state = ppc_cpu_dump_state;
     cc->set_pc = ppc_cpu_set_pc;
     cc->gdb_read_register = ppc_cpu_gdb_read_register;
@@ -9078,6 +9087,9 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
 
 #ifdef CONFIG_TCG
     cc->tcg_ops = &ppc_tcg_ops;
+#ifndef CONFIG_USER_ONLY
+    pcc->has_work = cpu_has_work_default;
+#endif
 #endif /* CONFIG_TCG */
 }
 
-- 
2.31.1

[PATCH v5 23/31] target/riscv: Restrict has_work() handler to sysemu and TCG

[Philippe Mathieu-Daudé]

Restrict has_work() to TCG sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/riscv/cpu.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 13575c14085..abb555a8bdb 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -335,9 +335,9 @@ static void riscv_cpu_synchronize_from_tb(CPUState *cs,
     env->pc = tb->pc;
 }
 
+#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
 static bool riscv_cpu_has_work(CPUState *cs)
 {
-#ifndef CONFIG_USER_ONLY
     RISCVCPU *cpu = RISCV_CPU(cs);
     CPURISCVState *env = &cpu->env;
     /*
@@ -345,10 +345,8 @@ static bool riscv_cpu_has_work(CPUState *cs)
      * mode and delegation registers, but respect individual enables
      */
     return (env->mip & env->mie) != 0;
-#else
-    return true;
-#endif
 }
+#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 
 void restore_state_to_opc(CPURISCVState *env, TranslationBlock *tb,
                           target_ulong *data)
@@ -647,6 +645,7 @@ static const struct TCGCPUOps riscv_tcg_ops = {
     .tlb_fill = riscv_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = riscv_cpu_has_work,
     .cpu_exec_interrupt = riscv_cpu_exec_interrupt,
     .do_interrupt = riscv_cpu_do_interrupt,
     .do_transaction_failed = riscv_cpu_do_transaction_failed,
@@ -666,7 +665,6 @@ static void riscv_cpu_class_init(ObjectClass *c, void *data)
     device_class_set_parent_reset(dc, riscv_cpu_reset, &mcc->parent_reset);
 
     cc->class_by_name = riscv_cpu_class_by_name;
-    cc->has_work = riscv_cpu_has_work;
     cc->dump_state = riscv_cpu_dump_state;
     cc->set_pc = riscv_cpu_set_pc;
     cc->gdb_read_register = riscv_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 24/31] target/rx: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/rx/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/rx/cpu.c b/target/rx/cpu.c
index 25a4aa2976d..ac6b40b2716 100644
--- a/target/rx/cpu.c
+++ b/target/rx/cpu.c
@@ -41,11 +41,13 @@ static void rx_cpu_synchronize_from_tb(CPUState *cs,
     cpu->env.pc = tb->pc;
 }
 
+#if !defined(CONFIG_USER_ONLY)
 static bool rx_cpu_has_work(CPUState *cs)
 {
     return cs->interrupt_request &
         (CPU_INTERRUPT_HARD | CPU_INTERRUPT_FIR);
 }
+#endif /* !CONFIG_USER_ONLY */
 
 static void rx_cpu_reset(DeviceState *dev)
 {
@@ -189,6 +191,7 @@ static const struct TCGCPUOps rx_tcg_ops = {
     .tlb_fill = rx_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = rx_cpu_has_work,
     .cpu_exec_interrupt = rx_cpu_exec_interrupt,
     .do_interrupt = rx_cpu_do_interrupt,
 #endif /* !CONFIG_USER_ONLY */
@@ -206,7 +209,6 @@ static void rx_cpu_class_init(ObjectClass *klass, void *data)
                                   &rcc->parent_reset);
 
     cc->class_by_name = rx_cpu_class_by_name;
-    cc->has_work = rx_cpu_has_work;
     cc->dump_state = rx_cpu_dump_state;
     cc->set_pc = rx_cpu_set_pc;
 
-- 
2.31.1

[PATCH v5 25/31] target/s390x: Restrict has_work() handler to sysemu and TCG

[Philippe Mathieu-Daudé]

Restrict has_work() to TCG sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/s390x/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index 7b7b05f1d3a..df8ade9021d 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -88,6 +88,7 @@ static void s390_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.psw.addr = value;
 }
 
+#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
 static bool s390_cpu_has_work(CPUState *cs)
 {
     S390CPU *cpu = S390_CPU(cs);
@@ -104,6 +105,7 @@ static bool s390_cpu_has_work(CPUState *cs)
 
     return s390_cpu_has_int(cpu);
 }
+#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 
 /* S390CPUClass::reset() */
 static void s390_cpu_reset(CPUState *s, cpu_reset_type type)
@@ -269,6 +271,7 @@ static const struct TCGCPUOps s390_tcg_ops = {
     .tlb_fill = s390_cpu_tlb_fill,
 
 #if !defined(CONFIG_USER_ONLY)
+    .has_work = s390_cpu_has_work,
     .cpu_exec_interrupt = s390_cpu_exec_interrupt,
     .do_interrupt = s390_cpu_do_interrupt,
     .debug_excp_handler = s390x_cpu_debug_excp_handler,
@@ -292,7 +295,6 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
 
     scc->reset = s390_cpu_reset;
     cc->class_by_name = s390_cpu_class_by_name,
-    cc->has_work = s390_cpu_has_work;
     cc->dump_state = s390_cpu_dump_state;
     cc->set_pc = s390_cpu_set_pc;
     cc->gdb_read_register = s390_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 26/31] target/sh4: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/sh4/cpu.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/target/sh4/cpu.c b/target/sh4/cpu.c
index 2047742d03c..fb2116dc52e 100644
--- a/target/sh4/cpu.c
+++ b/target/sh4/cpu.c
@@ -58,13 +58,14 @@ static bool superh_io_recompile_replay_branch(CPUState *cs,
     }
     return false;
 }
-#endif
 
 static bool superh_cpu_has_work(CPUState *cs)
 {
     return cs->interrupt_request & CPU_INTERRUPT_HARD;
 }
 
+#endif /* !CONFIG_USER_ONLY */
+
 static void superh_cpu_reset(DeviceState *dev)
 {
     CPUState *s = CPU(dev);
@@ -239,6 +240,7 @@ static const struct TCGCPUOps superh_tcg_ops = {
     .tlb_fill = superh_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = superh_cpu_has_work,
     .cpu_exec_interrupt = superh_cpu_exec_interrupt,
     .do_interrupt = superh_cpu_do_interrupt,
     .do_unaligned_access = superh_cpu_do_unaligned_access,
@@ -258,7 +260,6 @@ static void superh_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_reset(dc, superh_cpu_reset, &scc->parent_reset);
 
     cc->class_by_name = superh_cpu_class_by_name;
-    cc->has_work = superh_cpu_has_work;
     cc->dump_state = superh_cpu_dump_state;
     cc->set_pc = superh_cpu_set_pc;
     cc->gdb_read_register = superh_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 27/31] target/sparc: Remove pointless use of CONFIG_TCG definition

[Philippe Mathieu-Daudé]

The SPARC target only support TCG acceleration. Remove the CONFIG_TCG
definition introduced by mistake in commit 78271684719 ("cpu: tcg_ops:
move to tcg-cpu-ops.h, keep a pointer in CPUClass").

Reported-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/sparc/cpu.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c
index 5a8a4ce7506..e83e305aa9d 100644
--- a/target/sparc/cpu.c
+++ b/target/sparc/cpu.c
@@ -859,7 +859,6 @@ static const struct SysemuCPUOps sparc_sysemu_ops = {
 };
 #endif
 
-#ifdef CONFIG_TCG
 #include "hw/core/tcg-cpu-ops.h"
 
 static const struct TCGCPUOps sparc_tcg_ops = {
@@ -874,7 +873,6 @@ static const struct TCGCPUOps sparc_tcg_ops = {
     .do_unaligned_access = sparc_cpu_do_unaligned_access,
 #endif /* !CONFIG_USER_ONLY */
 };
-#endif /* CONFIG_TCG */
 
 static void sparc_cpu_class_init(ObjectClass *oc, void *data)
 {
-- 
2.31.1

[PATCH v5 28/31] target/sparc: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/sparc/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c
index e83e305aa9d..4a63ed12644 100644
--- a/target/sparc/cpu.c
+++ b/target/sparc/cpu.c
@@ -702,6 +702,7 @@ static void sparc_cpu_synchronize_from_tb(CPUState *cs,
     cpu->env.npc = tb->cs_base;
 }
 
+#if !defined(CONFIG_USER_ONLY)
 static bool sparc_cpu_has_work(CPUState *cs)
 {
     SPARCCPU *cpu = SPARC_CPU(cs);
@@ -710,6 +711,7 @@ static bool sparc_cpu_has_work(CPUState *cs)
     return (cs->interrupt_request & CPU_INTERRUPT_HARD) &&
            cpu_interrupts_enabled(env);
 }
+#endif /* !CONFIG_USER_ONLY */
 
 static char *sparc_cpu_type_name(const char *cpu_model)
 {
@@ -867,6 +869,7 @@ static const struct TCGCPUOps sparc_tcg_ops = {
     .tlb_fill = sparc_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = sparc_cpu_has_work,
     .cpu_exec_interrupt = sparc_cpu_exec_interrupt,
     .do_interrupt = sparc_cpu_do_interrupt,
     .do_transaction_failed = sparc_cpu_do_transaction_failed,
@@ -888,7 +891,6 @@ static void sparc_cpu_class_init(ObjectClass *oc, void *data)
 
     cc->class_by_name = sparc_cpu_class_by_name;
     cc->parse_features = sparc_cpu_parse_features;
-    cc->has_work = sparc_cpu_has_work;
     cc->dump_state = sparc_cpu_dump_state;
 #if !defined(TARGET_SPARC64) && !defined(CONFIG_USER_ONLY)
     cc->memory_rw_debug = sparc_cpu_memory_rw_debug;
-- 
2.31.1

[PATCH v5 29/31] target/tricore: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/tricore/cpu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/target/tricore/cpu.c b/target/tricore/cpu.c
index b95682b7f04..419fa624bd5 100644
--- a/target/tricore/cpu.c
+++ b/target/tricore/cpu.c
@@ -62,10 +62,12 @@ static void tricore_cpu_reset(DeviceState *dev)
     cpu_state_reset(env);
 }
 
+#if !defined(CONFIG_USER_ONLY)
 static bool tricore_cpu_has_work(CPUState *cs)
 {
     return true;
 }
+#endif /* !CONFIG_USER_ONLY */
 
 static void tricore_cpu_realizefn(DeviceState *dev, Error **errp)
 {
@@ -154,6 +156,9 @@ static const struct TCGCPUOps tricore_tcg_ops = {
     .initialize = tricore_tcg_init,
     .synchronize_from_tb = tricore_cpu_synchronize_from_tb,
     .tlb_fill = tricore_cpu_tlb_fill,
+#if !defined(CONFIG_USER_ONLY)
+    .has_work = tricore_cpu_has_work,
+#endif
 };
 
 static void tricore_cpu_class_init(ObjectClass *c, void *data)
@@ -167,7 +172,6 @@ static void tricore_cpu_class_init(ObjectClass *c, void *data)
 
     device_class_set_parent_reset(dc, tricore_cpu_reset, &mcc->parent_reset);
     cc->class_by_name = tricore_cpu_class_by_name;
-    cc->has_work = tricore_cpu_has_work;
 
     cc->gdb_read_register = tricore_cpu_gdb_read_register;
     cc->gdb_write_register = tricore_cpu_gdb_write_register;
-- 
2.31.1

[PATCH v5 30/31] target/xtensa: Restrict has_work() handler to sysemu

[Philippe Mathieu-Daudé]

Restrict has_work() to sysemu.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/xtensa/cpu.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c
index c1cbd03595e..5cb19a88819 100644
--- a/target/xtensa/cpu.c
+++ b/target/xtensa/cpu.c
@@ -43,18 +43,17 @@ static void xtensa_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.pc = value;
 }
 
+#ifndef CONFIG_USER_ONLY
+
 static bool xtensa_cpu_has_work(CPUState *cs)
 {
-#ifndef CONFIG_USER_ONLY
     XtensaCPU *cpu = XTENSA_CPU(cs);
 
     return !cpu->env.runstall && cpu->env.pending_irq_level;
-#else
-    return true;
-#endif
 }
 
-#ifdef CONFIG_USER_ONLY
+#else /* CONFIG_USER_ONLY*/
+
 static bool abi_call0;
 
 void xtensa_set_abi_call0(void)
@@ -66,7 +65,8 @@ bool xtensa_abi_call0(void)
 {
     return abi_call0;
 }
-#endif
+
+#endif /* CONFIG_USER_ONLY */
 
 static void xtensa_cpu_reset(DeviceState *dev)
 {
@@ -196,6 +196,7 @@ static const struct TCGCPUOps xtensa_tcg_ops = {
     .debug_excp_handler = xtensa_breakpoint_handler,
 
 #ifndef CONFIG_USER_ONLY
+    .has_work = xtensa_cpu_has_work,
     .cpu_exec_interrupt = xtensa_cpu_exec_interrupt,
     .do_interrupt = xtensa_cpu_do_interrupt,
     .do_transaction_failed = xtensa_cpu_do_transaction_failed,
@@ -215,7 +216,6 @@ static void xtensa_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_reset(dc, xtensa_cpu_reset, &xcc->parent_reset);
 
     cc->class_by_name = xtensa_cpu_class_by_name;
-    cc->has_work = xtensa_cpu_has_work;
     cc->dump_state = xtensa_cpu_dump_state;
     cc->set_pc = xtensa_cpu_set_pc;
     cc->gdb_read_register = xtensa_cpu_gdb_read_register;
-- 
2.31.1

[PATCH v5 31/31] accel: Add missing AccelOpsClass::has_work() and drop SysemuCPUOps one

[Philippe Mathieu-Daudé]

cpu_common_has_work() is the default has_work() implementation
and returns 'false'.

Explicit it for the QTest / HAX / HVF / NVMM / Xen accelerators
and remove cpu_common_has_work().

Since there are no more implementations of SysemuCPUOps::has_work,
remove it along with the assertion in cpu_has_work().

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Paul Durrant <paul@xen.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/hw/core/cpu.h             |  2 --
 accel/hvf/hvf-accel-ops.c         |  6 ++++++
 accel/qtest/qtest.c               |  6 ++++++
 accel/xen/xen-all.c               |  6 ++++++
 hw/core/cpu-common.c              |  6 ------
 softmmu/cpus.c                    | 11 ++---------
 target/i386/hax/hax-accel-ops.c   |  6 ++++++
 target/i386/nvmm/nvmm-accel-ops.c |  6 ++++++
 8 files changed, 32 insertions(+), 17 deletions(-)

diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index e2dd171a13f..c64709b898c 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -89,7 +89,6 @@ struct SysemuCPUOps;
  * instantiatable CPU type.
  * @parse_features: Callback to parse command line arguments.
  * @reset_dump_flags: #CPUDumpFlags to use for reset logging.
- * @has_work: Callback for checking if there is work to do.
  * @memory_rw_debug: Callback for GDB memory access.
  * @dump_state: Callback for dumping state.
  * @get_arch_id: Callback for getting architecture-dependent CPU ID.
@@ -132,7 +131,6 @@ struct CPUClass {
     void (*parse_features)(const char *typename, char *str, Error **errp);
 
     int reset_dump_flags;
-    bool (*has_work)(CPUState *cpu);
     int (*memory_rw_debug)(CPUState *cpu, vaddr addr,
                            uint8_t *buf, int len, bool is_write);
     void (*dump_state)(CPUState *cpu, FILE *, int flags);
diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c
index d1691be9896..53c427ee42e 100644
--- a/accel/hvf/hvf-accel-ops.c
+++ b/accel/hvf/hvf-accel-ops.c
@@ -446,6 +446,11 @@ static void hvf_start_vcpu_thread(CPUState *cpu)
                        cpu, QEMU_THREAD_JOINABLE);
 }
 
+static bool hvf_cpu_has_work(CPUState *cpu)
+{
+    return false;
+}
+
 static void hvf_accel_ops_class_init(ObjectClass *oc, void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
@@ -456,6 +461,7 @@ static void hvf_accel_ops_class_init(ObjectClass *oc, void *data)
     ops->synchronize_post_init = hvf_cpu_synchronize_post_init;
     ops->synchronize_state = hvf_cpu_synchronize_state;
     ops->synchronize_pre_loadvm = hvf_cpu_synchronize_pre_loadvm;
+    ops->has_work = hvf_cpu_has_work;
 };
 static const TypeInfo hvf_accel_ops_type = {
     .name = ACCEL_OPS_NAME("hvf"),
diff --git a/accel/qtest/qtest.c b/accel/qtest/qtest.c
index 7e6b8110d52..eb5a17cef18 100644
--- a/accel/qtest/qtest.c
+++ b/accel/qtest/qtest.c
@@ -47,12 +47,18 @@ static const TypeInfo qtest_accel_type = {
 };
 module_obj(TYPE_QTEST_ACCEL);
 
+static bool qtest_cpu_has_work(CPUState *cpu)
+{
+    return false;
+}
+
 static void qtest_accel_ops_class_init(ObjectClass *oc, void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
 
     ops->create_vcpu_thread = dummy_start_vcpu_thread;
     ops->get_virtual_clock = qtest_get_virtual_clock;
+    ops->has_work = qtest_cpu_has_work;
 };
 
 static const TypeInfo qtest_accel_ops_type = {
diff --git a/accel/xen/xen-all.c b/accel/xen/xen-all.c
index 69aa7d018b2..fe5a37fa2e6 100644
--- a/accel/xen/xen-all.c
+++ b/accel/xen/xen-all.c
@@ -215,11 +215,17 @@ static const TypeInfo xen_accel_type = {
     .class_init = xen_accel_class_init,
 };
 
+static bool xen_cpu_has_work(CPUState *cpu)
+{
+    return false;
+}
+
 static void xen_accel_ops_class_init(ObjectClass *oc, void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
 
     ops->create_vcpu_thread = dummy_start_vcpu_thread;
+    ops->has_work = xen_cpu_has_work;
 }
 
 static const TypeInfo xen_accel_ops_type = {
diff --git a/hw/core/cpu-common.c b/hw/core/cpu-common.c
index e2f5a646046..5ed1ccdfdd5 100644
--- a/hw/core/cpu-common.c
+++ b/hw/core/cpu-common.c
@@ -143,11 +143,6 @@ static void cpu_common_reset(DeviceState *dev)
     }
 }
 
-static bool cpu_common_has_work(CPUState *cs)
-{
-    return false;
-}
-
 ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model)
 {
     CPUClass *cc = CPU_CLASS(object_class_by_name(typename));
@@ -279,7 +274,6 @@ static void cpu_class_init(ObjectClass *klass, void *data)
 
     k->parse_features = cpu_common_parse_features;
     k->get_arch_id = cpu_common_get_arch_id;
-    k->has_work = cpu_common_has_work;
     k->gdb_read_register = cpu_common_gdb_read_register;
     k->gdb_write_register = cpu_common_gdb_write_register;
     set_bit(DEVICE_CATEGORY_CPU, dc->categories);
diff --git a/softmmu/cpus.c b/softmmu/cpus.c
index 98b4049aba7..e6dad2243c6 100644
--- a/softmmu/cpus.c
+++ b/softmmu/cpus.c
@@ -251,15 +251,8 @@ void cpu_interrupt(CPUState *cpu, int mask)
 
 bool cpu_has_work(CPUState *cpu)
 {
-    CPUClass *cc = CPU_GET_CLASS(cpu);
-
-    if (cc->has_work) {
-        return cc->has_work(cpu);
-    }
-    if (cpus_accel->has_work) {
-        return cpus_accel->has_work(cpu);
-    }
-    g_assert_not_reached();
+    g_assert(cpus_accel->has_work);
+    return cpus_accel->has_work(cpu);
 }
 
 static int do_vm_stop(RunState state, bool send_stop)
diff --git a/target/i386/hax/hax-accel-ops.c b/target/i386/hax/hax-accel-ops.c
index 136630e9b23..5407ba17eaf 100644
--- a/target/i386/hax/hax-accel-ops.c
+++ b/target/i386/hax/hax-accel-ops.c
@@ -74,6 +74,11 @@ static void hax_start_vcpu_thread(CPUState *cpu)
 #endif
 }
 
+static bool hax_cpu_has_work(CPUState *cpu)
+{
+    return false;
+}
+
 static void hax_accel_ops_class_init(ObjectClass *oc, void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
@@ -85,6 +90,7 @@ static void hax_accel_ops_class_init(ObjectClass *oc, void *data)
     ops->synchronize_post_init = hax_cpu_synchronize_post_init;
     ops->synchronize_state = hax_cpu_synchronize_state;
     ops->synchronize_pre_loadvm = hax_cpu_synchronize_pre_loadvm;
+    ops->has_work = hax_cpu_has_work;
 }
 
 static const TypeInfo hax_accel_ops_type = {
diff --git a/target/i386/nvmm/nvmm-accel-ops.c b/target/i386/nvmm/nvmm-accel-ops.c
index f788f75289f..36296f79ff8 100644
--- a/target/i386/nvmm/nvmm-accel-ops.c
+++ b/target/i386/nvmm/nvmm-accel-ops.c
@@ -83,6 +83,11 @@ static void nvmm_kick_vcpu_thread(CPUState *cpu)
     cpus_kick_thread(cpu);
 }
 
+static bool nvmm_cpu_has_work(CPUState *cpu)
+{
+    return false;
+}
+
 static void nvmm_accel_ops_class_init(ObjectClass *oc, void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
@@ -94,6 +99,7 @@ static void nvmm_accel_ops_class_init(ObjectClass *oc, void *data)
     ops->synchronize_post_init = nvmm_cpu_synchronize_post_init;
     ops->synchronize_state = nvmm_cpu_synchronize_state;
     ops->synchronize_pre_loadvm = nvmm_cpu_synchronize_pre_loadvm;
+    ops->has_work = nvmm_cpu_has_work;
 }
 
 static const TypeInfo nvmm_accel_ops_type = {
-- 
2.31.1

Re: [PATCH v5 12/31] target/cris: Restrict has_work() handler to sysemu

[Richard Henderson]

On 9/20/21 2:44 PM, Philippe Mathieu-Daudé wrote:
> Restrict has_work() to sysemu.
> 
> Signed-off-by: Philippe Mathieu-Daudé<f4bug@amsat.org>
> ---
>   target/cris/cpu.c | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~

Re: [PATCH v5 05/31] sysemu: Introduce AccelOpsClass::has_work()

[Richard Henderson]

On 9/20/21 2:44 PM, Philippe Mathieu-Daudé wrote:
> -    g_assert(cc->has_work);
> -    return cc->has_work(cpu);
> +    if (cc->has_work) {
> +        return cc->has_work(cpu);
> +    }
> +    if (cpus_accel->has_work) {
> +        return cpus_accel->has_work(cpu);
> +    }
> +    g_assert_not_reached();

This might be close to the end result, but it isn't what we begin with in cpu_thread_is_idle.

You'd want

     if (cc->has_work && cc->has_work(cpu)) {
         return true;
     }
     if (cpus_accel->has_work && cpus_accel->has_work(cpu)) {
         return true;
     }
     return false;

to start.  After the cpus_accel hook is filled in you can assert and return from 
cpus_accel->has_work.  And of course after cc->has_work is removed, that clause is gone.


r~

Re: [PATCH v5 08/31] accel/tcg: Implement AccelOpsClass::has_work() as stub

[Richard Henderson]

On 9/20/21 2:44 PM, Philippe Mathieu-Daudé wrote:
> +static bool tcg_cpu_has_work(CPUState *cpu)
> +{
> +    CPUClass *cc = CPU_GET_CLASS(cpu);
> +
> +    g_assert(cc->tcg_ops->has_work);
> +    return cc->tcg_ops->has_work(cpu);
> +}

Now, you're expecting cc->has_work to disappear as cc->tcg_ops->has_work appears.  If 
we're expecting cc->has_work to not affect other accelerators, then I think you should 
first move cc->has_work to this function, *before* you add the tcg_ops hook.


r~

Re: [PATCH v5 10/31] target/arm: Restrict has_work() handler to sysemu and TCG

[Richard Henderson]

On 9/20/21 2:44 PM, Philippe Mathieu-Daudé wrote:
> Restrict has_work() to TCG sysemu.
> 
> Signed-off-by: Philippe Mathieu-Daudé<f4bug@amsat.org>
> ---
>   target/arm/cpu.c     | 7 +++++--
>   target/arm/cpu_tcg.c | 2 +-
>   2 files changed, 6 insertions(+), 3 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~

Re: [PATCH v5 01/31] target/arm: Implement arm_v7m_cpu_has_work()

[Peter Maydell]

On Mon, 20 Sept 2021 at 22:44, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>
> Implement SysemuCPUOps::has_work() handler for the ARM v7M CPU.
>
> See the comments added in commit 7ecdaa4a963 ("armv7m: Fix
> condition check for taking exceptions") which eventually
> forgot to implement this has_work() handler:

Huh? M-profile and A-profile share the same arm_cpu_has_work()
function. Some of the checks the code there does are perhaps
unnecessary for M-profile, but they're harmless.

>   * ARMv7-M interrupt masking works differently than -A or -R.
>   * There is no FIQ/IRQ distinction.
>
> The NVIC signal any pending interrupt by raising ARM_CPU_IRQ
> (see commit 56b7c66f498: "armv7m: QOMify the armv7m container")
> which ends setting the CPU_INTERRUPT_HARD bit in interrupt_request.
>
> Thus arm_v7m_cpu_has_work() implementation is thus quite trivial,
> we simply need to check for this bit.
>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Michael Davidsaver <mdavidsaver@gmail.com>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>  target/arm/cpu_tcg.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c
> index 0d5adccf1a7..da348938407 100644
> --- a/target/arm/cpu_tcg.c
> +++ b/target/arm/cpu_tcg.c
> @@ -23,6 +23,11 @@
>  #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
>
>  #if !defined(CONFIG_USER_ONLY) && defined(CONFIG_TCG)
> +static bool arm_v7m_cpu_has_work(CPUState *cs)
> +{
> +    return cs->interrupt_request & CPU_INTERRUPT_HARD;
> +}

This seems to be missing at least the check on
cpu->power_state and the CPU_INTERRUPT_EXITTB test.

Is there any reason why we shouldn't just continue to
share the same function between A and M profile, and avoid
the extra function and the ifdefs ?

-- PMM

Re: [PATCH v5 01/31] target/arm: Implement arm_v7m_cpu_has_work()

[Philippe Mathieu-Daudé]

On 9/21/21 11:34, Peter Maydell wrote:
> On Mon, 20 Sept 2021 at 22:44, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>>
>> Implement SysemuCPUOps::has_work() handler for the ARM v7M CPU.
>>
>> See the comments added in commit 7ecdaa4a963 ("armv7m: Fix
>> condition check for taking exceptions") which eventually
>> forgot to implement this has_work() handler:
> 
> Huh? M-profile and A-profile share the same arm_cpu_has_work()
> function. Some of the checks the code there does are perhaps
> unnecessary for M-profile, but they're harmless.
> 
>>    * ARMv7-M interrupt masking works differently than -A or -R.
>>    * There is no FIQ/IRQ distinction.
>>
>> The NVIC signal any pending interrupt by raising ARM_CPU_IRQ
>> (see commit 56b7c66f498: "armv7m: QOMify the armv7m container")
>> which ends setting the CPU_INTERRUPT_HARD bit in interrupt_request.
>>
>> Thus arm_v7m_cpu_has_work() implementation is thus quite trivial,
>> we simply need to check for this bit.
>>
>> Cc: Peter Maydell <peter.maydell@linaro.org>
>> Cc: Michael Davidsaver <mdavidsaver@gmail.com>
>> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
>> ---
>>   target/arm/cpu_tcg.c | 6 ++++++
>>   1 file changed, 6 insertions(+)
>>
>> diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c
>> index 0d5adccf1a7..da348938407 100644
>> --- a/target/arm/cpu_tcg.c
>> +++ b/target/arm/cpu_tcg.c
>> @@ -23,6 +23,11 @@
>>   #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
>>
>>   #if !defined(CONFIG_USER_ONLY) && defined(CONFIG_TCG)
>> +static bool arm_v7m_cpu_has_work(CPUState *cs)
>> +{
>> +    return cs->interrupt_request & CPU_INTERRUPT_HARD;
>> +}
> 
> This seems to be missing at least the check on
> cpu->power_state and the CPU_INTERRUPT_EXITTB test.
> 
> Is there any reason why we shouldn't just continue to
> share the same function between A and M profile, and avoid
> the extra function and the ifdefs ?

The only reason I can think of is I should have been resting
instead of posting this patch :/ I'll re-use arm_cpu_has_work()
which is, as you said, harmless and safer.

Re: [PATCH v5 01/31] target/arm: Implement arm_v7m_cpu_has_work()

[Philippe Mathieu-Daudé]

Hi Peter,

On 9/21/21 11:45, Philippe Mathieu-Daudé wrote:
> On 9/21/21 11:34, Peter Maydell wrote:
>> On Mon, 20 Sept 2021 at 22:44, Philippe Mathieu-Daudé 
>> <f4bug@amsat.org> wrote:
>>>
>>> Implement SysemuCPUOps::has_work() handler for the ARM v7M CPU.
>>>
>>> See the comments added in commit 7ecdaa4a963 ("armv7m: Fix
>>> condition check for taking exceptions") which eventually
>>> forgot to implement this has_work() handler:
>>
>> Huh? M-profile and A-profile share the same arm_cpu_has_work()
>> function. Some of the checks the code there does are perhaps
>> unnecessary for M-profile, but they're harmless.

A v7M core is registered as (example for Cortex-M0):

static const ARMCPUInfo arm_tcg_cpus[] = {
     ...
     { .name = "cortex-m0",   .initfn = cortex_m0_initfn,
                              .class_init = arm_v7m_class_init },


static void arm_tcg_cpu_register_types(void)
{
     ...
     for (i = 0; i < ARRAY_SIZE(arm_tcg_cpus); ++i) {
         arm_cpu_register(&arm_tcg_cpus[i]);


void arm_cpu_register(const ARMCPUInfo *info)
{
     TypeInfo type_info = {
         .parent = TYPE_ARM_CPU,
         .instance_size = sizeof(ARMCPU),
         .instance_align = __alignof__(ARMCPU),
         .instance_init = arm_cpu_instance_init,
         .class_size = sizeof(ARMCPUClass),
         .class_init = info->class_init ?: cpu_register_class_init,
         .class_data = (void *)info,
     };

Since we provide info->class_init as arm_v7m_class_init(), only
tcg_ops and gdb_core_xml_file from CPUClass are set:

static void arm_v7m_class_init(ObjectClass *oc, void *data)
{
     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);

     acc->info = data;
#ifdef CONFIG_TCG
     cc->tcg_ops = &arm_v7m_tcg_ops;
#endif /* CONFIG_TCG */

     cc->gdb_core_xml_file = "arm-m-profile.xml";
}

Thus v7M cores end calling cpu_common_has_work() registered by
cpu_class_init(), which is:

static bool cpu_common_has_work(CPUState *cs)
{
     return false;
}

What am I missing?

>>
>>>    * ARMv7-M interrupt masking works differently than -A or -R.
>>>    * There is no FIQ/IRQ distinction.
>>>
>>> The NVIC signal any pending interrupt by raising ARM_CPU_IRQ
>>> (see commit 56b7c66f498: "armv7m: QOMify the armv7m container")
>>> which ends setting the CPU_INTERRUPT_HARD bit in interrupt_request.
>>>
>>> Thus arm_v7m_cpu_has_work() implementation is thus quite trivial,
>>> we simply need to check for this bit.
>>>
>>> Cc: Peter Maydell <peter.maydell@linaro.org>
>>> Cc: Michael Davidsaver <mdavidsaver@gmail.com>
>>> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
>>> ---
>>>   target/arm/cpu_tcg.c | 6 ++++++
>>>   1 file changed, 6 insertions(+)
>>>
>>> diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c
>>> index 0d5adccf1a7..da348938407 100644
>>> --- a/target/arm/cpu_tcg.c
>>> +++ b/target/arm/cpu_tcg.c
>>> @@ -23,6 +23,11 @@
>>>   #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
>>>
>>>   #if !defined(CONFIG_USER_ONLY) && defined(CONFIG_TCG)
>>> +static bool arm_v7m_cpu_has_work(CPUState *cs)
>>> +{
>>> +    return cs->interrupt_request & CPU_INTERRUPT_HARD;
>>> +}
>>
>> This seems to be missing at least the check on
>> cpu->power_state and the CPU_INTERRUPT_EXITTB test.
>>
>> Is there any reason why we shouldn't just continue to
>> share the same function between A and M profile, and avoid
>> the extra function and the ifdefs ?
> 
> The only reason I can think of is I should have been resting
> instead of posting this patch :/ I'll re-use arm_cpu_has_work()
> which is, as you said, harmless and safer.
> 

Re: [PATCH v5 05/31] sysemu: Introduce AccelOpsClass::has_work()

[Philippe Mathieu-Daudé]

On 9/20/21 23:58, Richard Henderson wrote:
> On 9/20/21 2:44 PM, Philippe Mathieu-Daudé wrote:
>> -    g_assert(cc->has_work);
>> -    return cc->has_work(cpu);
>> +    if (cc->has_work) {
>> +        return cc->has_work(cpu);
>> +    }
>> +    if (cpus_accel->has_work) {
>> +        return cpus_accel->has_work(cpu);
>> +    }
>> +    g_assert_not_reached();
> 
> This might be close to the end result, but it isn't what we begin with 
> in cpu_thread_is_idle.
> 
> You'd want
> 
>      if (cc->has_work && cc->has_work(cpu)) {
>          return true;
>      }
>      if (cpus_accel->has_work && cpus_accel->has_work(cpu)) {
>          return true;
>      }
>      return false;
> 
> to start.  After the cpus_accel hook is filled in you can assert and 
> return from cpus_accel->has_work.  And of course after cc->has_work is 
> removed, that clause is gone.

Much cleaner, thank you for the hints :)

Re: [PATCH v5 08/31] accel/tcg: Implement AccelOpsClass::has_work() as stub

[Philippe Mathieu-Daudé]

On 9/21/21 00:01, Richard Henderson wrote:
> On 9/20/21 2:44 PM, Philippe Mathieu-Daudé wrote:
>> +static bool tcg_cpu_has_work(CPUState *cpu)
>> +{
>> +    CPUClass *cc = CPU_GET_CLASS(cpu);
>> +
>> +    g_assert(cc->tcg_ops->has_work);
>> +    return cc->tcg_ops->has_work(cpu);
>> +}
> 
> Now, you're expecting cc->has_work to disappear as cc->tcg_ops->has_work 
> appears.  If we're expecting cc->has_work to not affect other 
> accelerators, then I think you should first move cc->has_work to this 
> function, *before* you add the tcg_ops hook.

Indeed, thanks.

Re: [PATCH v5 01/31] target/arm: Implement arm_v7m_cpu_has_work()

[Peter Maydell]

On Thu, 23 Sept 2021 at 18:17, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> Since we provide info->class_init as arm_v7m_class_init(), only
> tcg_ops and gdb_core_xml_file from CPUClass are set:
>
> static void arm_v7m_class_init(ObjectClass *oc, void *data)
> {
>      ARMCPUClass *acc = ARM_CPU_CLASS(oc);
>      CPUClass *cc = CPU_CLASS(oc);
>
>      acc->info = data;
> #ifdef CONFIG_TCG
>      cc->tcg_ops = &arm_v7m_tcg_ops;
> #endif /* CONFIG_TCG */
>
>      cc->gdb_core_xml_file = "arm-m-profile.xml";
> }

This class's parent type is TYPE_ARM_CPU; so TYPE_ARM_CPU's class_init
runs first and sets up most of the class fields. This function only
needs to set the ones which must be different on a M-profile core.

-- PMM

Re: [PATCH v5 01/31] target/arm: Implement arm_v7m_cpu_has_work()

[Philippe Mathieu-Daudé]

On 9/23/21 20:01, Peter Maydell wrote:
> On Thu, 23 Sept 2021 at 18:17, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>> Since we provide info->class_init as arm_v7m_class_init(), only
>> tcg_ops and gdb_core_xml_file from CPUClass are set:
>>
>> static void arm_v7m_class_init(ObjectClass *oc, void *data)
>> {
>>       ARMCPUClass *acc = ARM_CPU_CLASS(oc);
>>       CPUClass *cc = CPU_CLASS(oc);
>>
>>       acc->info = data;
>> #ifdef CONFIG_TCG
>>       cc->tcg_ops = &arm_v7m_tcg_ops;
>> #endif /* CONFIG_TCG */
>>
>>       cc->gdb_core_xml_file = "arm-m-profile.xml";
>> }
> 
> This class's parent type is TYPE_ARM_CPU; so TYPE_ARM_CPU's class_init
> runs first and sets up most of the class fields. This function only
> needs to set the ones which must be different on a M-profile core.

Of course... Thanks!

Re: [PATCH v5 23/31] target/riscv: Restrict has_work() handler to sysemu and TCG

[Alistair Francis]

On Tue, Sep 21, 2021 at 8:09 AM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>
> Restrict has_work() to TCG sysemu.
>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Acked-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/riscv/cpu.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 13575c14085..abb555a8bdb 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -335,9 +335,9 @@ static void riscv_cpu_synchronize_from_tb(CPUState *cs,
>      env->pc = tb->pc;
>  }
>
> +#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
>  static bool riscv_cpu_has_work(CPUState *cs)
>  {
> -#ifndef CONFIG_USER_ONLY
>      RISCVCPU *cpu = RISCV_CPU(cs);
>      CPURISCVState *env = &cpu->env;
>      /*
> @@ -345,10 +345,8 @@ static bool riscv_cpu_has_work(CPUState *cs)
>       * mode and delegation registers, but respect individual enables
>       */
>      return (env->mip & env->mie) != 0;
> -#else
> -    return true;
> -#endif
>  }
> +#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
>
>  void restore_state_to_opc(CPURISCVState *env, TranslationBlock *tb,
>                            target_ulong *data)
> @@ -647,6 +645,7 @@ static const struct TCGCPUOps riscv_tcg_ops = {
>      .tlb_fill = riscv_cpu_tlb_fill,
>
>  #ifndef CONFIG_USER_ONLY
> +    .has_work = riscv_cpu_has_work,
>      .cpu_exec_interrupt = riscv_cpu_exec_interrupt,
>      .do_interrupt = riscv_cpu_do_interrupt,
>      .do_transaction_failed = riscv_cpu_do_transaction_failed,
> @@ -666,7 +665,6 @@ static void riscv_cpu_class_init(ObjectClass *c, void *data)
>      device_class_set_parent_reset(dc, riscv_cpu_reset, &mcc->parent_reset);
>
>      cc->class_by_name = riscv_cpu_class_by_name;
> -    cc->has_work = riscv_cpu_has_work;
>      cc->dump_state = riscv_cpu_dump_state;
>      cc->set_pc = riscv_cpu_set_pc;
>      cc->gdb_read_register = riscv_cpu_gdb_read_register;
> --
> 2.31.1
>
>