From: "Bruno Larsen (billionai)" <bruno.larsen@eldorado.org.br>
To: qemu-devel@nongnu.org
Cc: farosas@linux.ibm.com, richard.henderson@linaro.org,
luis.pires@eldorado.org.br, lucas.araujo@eldorado.org.br,
fernando.valle@eldorado.org.br, qemu-ppc@nongnu.org,
"Bruno Larsen \(billionai\)" <bruno.larsen@eldorado.org.br>,
matheus.ferst@eldorado.org.br, david@gibson.dropbear.id.au
Subject: [PATCH 07/11] target/ppc: added KVM fallback to fpscr manipulation
Date: Wed, 12 May 2021 11:08:09 -0300 [thread overview]
Message-ID: <20210512140813.112884-8-bruno.larsen@eldorado.org.br> (raw)
In-Reply-To: <20210512140813.112884-1-bruno.larsen@eldorado.org.br>
some common code needs to store information in fpscr, but this function
relies on TCG cde to work. This patch adds a kvm way to do it, and a
transparent way to call it when TCG is not compiled
Signed-off-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
---
target/ppc/gdbstub.c | 1 +
target/ppc/kvm.c | 14 ++++++++++++++
target/ppc/kvm_ppc.h | 6 ++++++
3 files changed, 21 insertions(+)
diff --git a/target/ppc/gdbstub.c b/target/ppc/gdbstub.c
index 17e41fc113..65759e0c1c 100644
--- a/target/ppc/gdbstub.c
+++ b/target/ppc/gdbstub.c
@@ -23,6 +23,7 @@
#include "exec/helper-proto.h"
#include "internal.h"
#include "helper_regs.h"
+#include "kvm_ppc.h"
static int ppc_gdb_register_len_apple(int n)
{
diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index 104a308abb..a8a720eb48 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -2947,3 +2947,17 @@ bool kvm_arch_cpu_check_are_resettable(void)
{
return true;
}
+
+void kvmppc_store_fpscr(CPUPPCState *env, uint64_t arg, uint32_t mask)
+{
+ CPUState *cs = env_cpu(env);
+ struct kvm_one_reg reg;
+ int ret;
+ reg.id = KVM_REG_PPC_FPSCR;
+ reg.addr = (uintptr_t) &env->fpscr;
+ ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®);
+ if (ret < 0)
+ {
+ fprintf(stderr, "Unable to set FPSCR to KVM: %s", strerror(errno));
+ }
+}
diff --git a/target/ppc/kvm_ppc.h b/target/ppc/kvm_ppc.h
index 989f61ace0..ff365e57a6 100644
--- a/target/ppc/kvm_ppc.h
+++ b/target/ppc/kvm_ppc.h
@@ -86,6 +86,12 @@ void kvmppc_set_reg_tb_offset(PowerPCCPU *cpu, int64_t tb_offset);
int kvm_handle_nmi(PowerPCCPU *cpu, struct kvm_run *run);
+#ifndef CONFIG_TCG
+# define store_fpscr kvmppc_store_fpscr
+#endif
+void kvmppc_store_fpscr(CPUPPCState *env, uint64_t arg, uint32_t mask);
+
+
#else
static inline uint32_t kvmppc_get_tbfreq(void)
--
2.17.1
next prev parent reply other threads:[~2021-05-12 14:26 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-12 14:08 [RFC PATCH 00/11] target/ppc: add support to disable-tcg Bruno Larsen (billionai)
2021-05-12 14:08 ` [PATCH 01/11] target/ppc: created ppc_{store, get}_vscr for generic vscr usage Bruno Larsen (billionai)
2021-05-12 16:48 ` [PATCH 01/11] target/ppc: created ppc_{store,get}_vscr " Richard Henderson
2021-05-13 3:48 ` David Gibson
2021-05-12 14:08 ` [PATCH 02/11] target/ppc: moved ppc_store_sdr1 to cpu.c Bruno Larsen (billionai)
2021-05-12 16:54 ` Richard Henderson
2021-05-13 3:50 ` David Gibson
2021-05-31 18:17 ` Bruno Piazera Larsen
2021-06-07 3:50 ` David Gibson
2021-05-12 14:08 ` [PATCH 03/11] target/ppc: moved ppc_cpu_dump_state to cpu_init.c Bruno Larsen (billionai)
2021-05-12 16:58 ` Richard Henderson
2021-05-12 17:00 ` Richard Henderson
2021-05-13 3:51 ` David Gibson
2021-05-12 14:08 ` [PATCH 04/11] target/ppc: moved ppc_store_msr into gdbstub.c Bruno Larsen (billionai)
2021-05-12 17:05 ` Richard Henderson
2021-05-13 3:52 ` David Gibson
2021-05-12 14:08 ` [PATCH 05/11] target/ppc: moved ppc_store_lpcr to cpu.c Bruno Larsen (billionai)
2021-05-12 17:07 ` Richard Henderson
2021-05-13 3:53 ` David Gibson
2021-05-12 14:08 ` [PATCH 06/11] target/ppc: updated vscr manipulation in machine.c Bruno Larsen (billionai)
2021-05-12 17:08 ` Richard Henderson
2021-05-13 3:54 ` David Gibson
2021-05-12 14:08 ` Bruno Larsen (billionai) [this message]
2021-05-12 18:20 ` [PATCH 07/11] target/ppc: added KVM fallback to fpscr manipulation Richard Henderson
2021-05-12 19:15 ` Bruno Piazera Larsen
2021-05-13 16:36 ` Bruno Piazera Larsen
2021-05-13 22:45 ` Richard Henderson
2021-05-14 11:12 ` Bruno Piazera Larsen
2021-05-12 14:08 ` [RFC PATCH 08/11] target/ppc: wrapped some TCG only logic with ifdefs Bruno Larsen (billionai)
2021-05-12 18:33 ` Richard Henderson
2021-05-12 18:57 ` Bruno Piazera Larsen
2021-05-14 13:29 ` Bruno Piazera Larsen
2021-05-14 14:44 ` Richard Henderson
2021-05-14 16:22 ` Bruno Piazera Larsen
2021-05-17 4:10 ` David Gibson
2021-05-17 16:07 ` Richard Henderson
2021-05-17 4:00 ` David Gibson
2021-05-24 18:01 ` Bruno Piazera Larsen
2021-05-24 20:03 ` Richard Henderson
2021-05-12 14:08 ` [PATCH 09/11] include/exec: added functions to the stubs in exec-all.h Bruno Larsen (billionai)
2021-05-12 18:34 ` Richard Henderson
2021-05-13 14:03 ` Lucas Mateus Martins Araujo e Castro
2021-05-13 23:44 ` Richard Henderson
2021-05-17 3:58 ` David Gibson
2021-05-17 16:59 ` Lucas Mateus Martins Araujo e Castro
2021-05-17 18:02 ` Richard Henderson
2021-05-18 18:45 ` Bruno Piazera Larsen
2021-05-24 3:18 ` David Gibson
2021-05-17 3:55 ` David Gibson
2021-05-17 11:07 ` Bruno Piazera Larsen
2021-05-24 3:15 ` David Gibson
2021-05-12 14:08 ` [RFC PATCH 10/11] target/ppc: created tcg-stub.c file Bruno Larsen (billionai)
2021-05-12 18:39 ` Richard Henderson
2021-05-12 19:09 ` Bruno Piazera Larsen
2021-05-14 18:07 ` Bruno Piazera Larsen
2021-05-13 3:59 ` David Gibson
2021-05-13 12:56 ` Bruno Piazera Larsen
2021-05-17 3:53 ` David Gibson
2021-05-12 14:08 ` [PATCH 11/11] target/ppc: updated meson.build to support disable-tcg Bruno Larsen (billionai)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210512140813.112884-8-bruno.larsen@eldorado.org.br \
--to=bruno.larsen@eldorado.org.br \
--cc=david@gibson.dropbear.id.au \
--cc=farosas@linux.ibm.com \
--cc=fernando.valle@eldorado.org.br \
--cc=lucas.araujo@eldorado.org.br \
--cc=luis.pires@eldorado.org.br \
--cc=matheus.ferst@eldorado.org.br \
--cc=qemu-devel@nongnu.org \
--cc=qemu-ppc@nongnu.org \
--cc=richard.henderson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).