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From: David Hildenbrand <david@redhat.com>
To: qemu-devel@nongnu.org
Cc: Thomas Huth <thuth@redhat.com>, Riku Voipio <riku.voipio@iki.fi>,
	Eduardo Habkost <ehabkost@redhat.com>,
	David Hildenbrand <david@redhat.com>,
	Aleksandar Rikalo <arikalo@wavecomp.com>,
	Cornelia Huck <cohuck@redhat.com>,
	Aleksandar Markovic <amarkovic@wavecomp.com>,
	qemu-s390x@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>,
	Aurelien Jarno <aurelien@aurel32.net>,
	Richard Henderson <rth@twiddle.net>
Subject: [Qemu-devel] [PATCH v1 3/9] tcg: Factor out CONFIG_USER_ONLY probe_write() from s390x code
Date: Fri, 23 Aug 2019 12:07:35 +0200
Message-ID: <20190823100741.9621-4-david@redhat.com> (raw)
In-Reply-To: <20190823100741.9621-1-david@redhat.com>

Factor it out, we'll do some further changes/extensions to both
probe_write() implementations soon. Make sure to allow "size = 0".

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 accel/tcg/user-exec.c     | 16 ++++++++++++++++
 include/exec/exec-all.h   |  4 ++--
 target/s390x/mem_helper.c |  7 -------
 3 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 897d1571c4..322d49c9b8 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -188,6 +188,22 @@ static inline int handle_cpu_signal(uintptr_t pc, siginfo_t *info,
     g_assert_not_reached();
 }
 
+void probe_write(CPUArchState *env, target_ulong addr, int size, int mmu_idx,
+                 uintptr_t retaddr)
+{
+    CPUState *cpu = env_cpu(env);
+    CPUClass *cc;
+
+    if (!guest_addr_valid(addr) ||
+        (size > 0 && !guest_addr_valid(addr + size - 1)) ||
+        page_check_range(addr, size, PAGE_WRITE) < 0) {
+        cc = CPU_GET_CLASS(cpu);
+        cc->tlb_fill(cpu, addr, size, MMU_DATA_STORE, MMU_USER_IDX, false,
+                     retaddr);
+        g_assert_not_reached();
+    }
+}
+
 #if defined(__i386__)
 
 #if defined(__NetBSD__)
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 135aeaab0d..cbcc85add3 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -260,8 +260,6 @@ void tlb_set_page_with_attrs(CPUState *cpu, target_ulong vaddr,
 void tlb_set_page(CPUState *cpu, target_ulong vaddr,
                   hwaddr paddr, int prot,
                   int mmu_idx, target_ulong size);
-void probe_write(CPUArchState *env, target_ulong addr, int size, int mmu_idx,
-                 uintptr_t retaddr);
 #else
 static inline void tlb_init(CPUState *cpu)
 {
@@ -312,6 +310,8 @@ static inline void tlb_flush_by_mmuidx_all_cpus_synced(CPUState *cpu,
 {
 }
 #endif
+void probe_write(CPUArchState *env, target_ulong addr, int size, int mmu_idx,
+                 uintptr_t retaddr);
 
 #define CODE_GEN_ALIGN           16 /* must be >= of the size of a icache line */
 
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index 4b43440e89..fdff60ce5d 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -2615,12 +2615,6 @@ uint32_t HELPER(cu42)(CPUS390XState *env, uint32_t r1, uint32_t r2, uint32_t m3)
 void probe_write_access(CPUS390XState *env, uint64_t addr, uint64_t len,
                         uintptr_t ra)
 {
-#ifdef CONFIG_USER_ONLY
-    if (!guest_addr_valid(addr) || !guest_addr_valid(addr + len - 1) ||
-        page_check_range(addr, len, PAGE_WRITE) < 0) {
-        s390_program_interrupt(env, PGM_ADDRESSING, ILEN_AUTO, ra);
-    }
-#else
     /* test the actual access, not just any access to the page due to LAP */
     while (len) {
         const uint64_t pagelen = -(addr | TARGET_PAGE_MASK);
@@ -2630,7 +2624,6 @@ void probe_write_access(CPUS390XState *env, uint64_t addr, uint64_t len,
         addr = wrap_address(env, addr + curlen);
         len -= curlen;
     }
-#endif
 }
 
 void HELPER(probe_write_access)(CPUS390XState *env, uint64_t addr, uint64_t len)
-- 
2.21.0



  parent reply index

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-23 10:07 [Qemu-devel] [PATCH v1 0/9] tcg: probe_write() refactorings and watchpoints David Hildenbrand
2019-08-23 10:07 ` [Qemu-devel] [PATCH v1 1/9] s390x/tcg: Use guest_addr_valid() instead of h2g_valid() in probe_write_access() David Hildenbrand
2019-08-23 14:49   ` Richard Henderson
2019-08-23 10:07 ` [Qemu-devel] [PATCH v1 2/9] s390x/tcg: Fix length calculation " David Hildenbrand
2019-08-23 14:50   ` Richard Henderson
2019-08-23 10:07 ` David Hildenbrand [this message]
2019-08-23 15:17   ` [Qemu-devel] [PATCH v1 3/9] tcg: Factor out CONFIG_USER_ONLY probe_write() from s390x code Richard Henderson
2019-08-23 15:22   ` Richard Henderson
2019-08-23 15:49     ` David Hildenbrand
2019-08-23 10:07 ` [Qemu-devel] [PATCH v1 4/9] tcg: Enforce single page access in probe_write() for !CONFIG_USER_ONLY David Hildenbrand
2019-08-23 15:28   ` Richard Henderson
2019-08-23 15:29     ` Richard Henderson
2019-08-23 10:07 ` [Qemu-devel] [PATCH v1 5/9] mips/tcg: Call probe_write() for CONFIG_USER_ONLY as well David Hildenbrand
2019-08-23 10:07 ` [Qemu-devel] [PATCH v1 6/9] hppa/tcg: Call probe_write() also for CONFIG_USER_ONLY David Hildenbrand
2019-08-23 15:31   ` Richard Henderson
2019-08-23 10:07 ` [Qemu-devel] [PATCH v1 7/9] s390x/tcg: Pass a size to probe_write() in do_csst() David Hildenbrand
2019-08-23 15:32   ` Richard Henderson
2019-08-23 10:07 ` [Qemu-devel] [PATCH v1 8/9] exec.c: Factor out core logic of check_watchpoint() David Hildenbrand
2019-08-23 11:27   ` David Hildenbrand
2019-08-23 16:09     ` Richard Henderson
2019-08-23 18:25       ` David Hildenbrand
2019-08-24 15:27     ` Richard Henderson
2019-08-23 10:07 ` [Qemu-devel] [PATCH v1 9/9] tcg: Check for watchpoints in probe_write() David Hildenbrand
2019-08-23 16:15   ` Richard Henderson
2019-08-24 19:45   ` Richard Henderson

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