[v1] gdbstub/next: re-organise and split build

[PATCH v4.5 29/29] gdbstub: move update guest debug to accel ops

Richard Henderson posted 29 patches 2 years, 11 months ago

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Maintainers: Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, "Alex Bennée" <alex.bennee@linaro.org>, Thomas Huth <thuth@redhat.com>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Yanan Wang <wangyanan55@huawei.com>, Daniel Henrique Barboza <danielhb413@gmail.com>, "Cédric Le Goater" <clg@kaod.org>, David Gibson <david@gibson.dropbear.id.au>, Greg Kurz <groug@kaod.org>, Laurent Vivier <laurent@vivier.eu>, Alexandre Iooss <erdnaxe@crans.org>, Mahmoud Mandour <ma.mandourr@gmail.com>, John Snow <jsnow@redhat.com>, Cleber Rosa <crosa@redhat.com>, Peter Maydell <peter.maydell@linaro.org>, Michael Rolnik <mrolnik@gmail.com>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Taylor Simpson <tsimpson@quicinc.com>, Sunil Muthuswamy <sunilmut@microsoft.com>, Song Gao <gaosong@loongson.cn>, Xiaojuan Yang <yangxiaojuan@loongson.cn>, Aurelien Jarno <aurelien@aurel32.net>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>, Chris Wulff <crwulff@gmail.com>, Marek Vasut <marex@denx.de>, Stafford Horne <shorne@gmail.com>, Palmer Dabbelt <palmer@dabbelt.com>, Alistair Francis <alistair.francis@wdc.com>, Bin Meng <bin.meng@windriver.com>, Weiwei Li <liweiwei@iscas.ac.cn>, Liu Zhiwei <zhiwei_liu@linux.alibaba.com>, Yoshinori Sato <ysato@users.sourceforge.jp>, David Hildenbrand <david@redhat.com>, Ilya Leoshkevich <iii@linux.ibm.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Artyom Tarasenko <atar4qemu@gmail.com>, Bastian Koppelmann <kbastian@mail.uni-paderborn.de>, Max Filippov <jcmvbkbc@gmail.com>

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[PATCH v4.5 29/29] gdbstub: move update guest debug to accel ops

Posted by Richard Henderson 2 years, 11 months ago

From: Mads Ynddal <m.ynddal@samsung.com>

Continuing the refactor of a48e7d9e52 (gdbstub: move guest debug support
check to ops) by removing hardcoded kvm_enabled() from generic cpu.c
code, and replace it with a property of AccelOpsClass.

Signed-off-by: Mads Ynddal <m.ynddal@samsung.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230207131721.49233-1-mads@ynddal.dk>
[AJB: add ifdef around update_guest_debug_ops, fix brace]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230302190846.2593720-27-alex.bennee@linaro.org>
---
 include/sysemu/accel-ops.h |  1 +
 accel/kvm/kvm-accel-ops.c  |  8 ++++++++
 cpu.c                      | 11 ++++++++---
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/include/sysemu/accel-ops.h b/include/sysemu/accel-ops.h
index 30690c71bd..3c1fab4b1e 100644
--- a/include/sysemu/accel-ops.h
+++ b/include/sysemu/accel-ops.h
@@ -48,6 +48,7 @@ struct AccelOpsClass {
 
     /* gdbstub hooks */
     bool (*supports_guest_debug)(void);
+    int (*update_guest_debug)(CPUState *cpu);
     int (*insert_breakpoint)(CPUState *cpu, int type, vaddr addr, vaddr len);
     int (*remove_breakpoint)(CPUState *cpu, int type, vaddr addr, vaddr len);
     void (*remove_all_breakpoints)(CPUState *cpu);
diff --git a/accel/kvm/kvm-accel-ops.c b/accel/kvm/kvm-accel-ops.c
index fbf4fe3497..457eafa380 100644
--- a/accel/kvm/kvm-accel-ops.c
+++ b/accel/kvm/kvm-accel-ops.c
@@ -86,6 +86,13 @@ static bool kvm_cpus_are_resettable(void)
     return !kvm_enabled() || kvm_cpu_check_are_resettable();
 }
 
+#ifdef KVM_CAP_SET_GUEST_DEBUG
+static int kvm_update_guest_debug_ops(CPUState *cpu)
+{
+    return kvm_update_guest_debug(cpu, 0);
+}
+#endif
+
 static void kvm_accel_ops_class_init(ObjectClass *oc, void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
@@ -99,6 +106,7 @@ static void kvm_accel_ops_class_init(ObjectClass *oc, void *data)
     ops->synchronize_pre_loadvm = kvm_cpu_synchronize_pre_loadvm;
 
 #ifdef KVM_CAP_SET_GUEST_DEBUG
+    ops->update_guest_debug = kvm_update_guest_debug_ops;
     ops->supports_guest_debug = kvm_supports_guest_debug;
     ops->insert_breakpoint = kvm_insert_breakpoint;
     ops->remove_breakpoint = kvm_remove_breakpoint;
diff --git a/cpu.c b/cpu.c
index e6abc6c76c..567b23af46 100644
--- a/cpu.c
+++ b/cpu.c
@@ -31,8 +31,8 @@
 #include "hw/core/sysemu-cpu-ops.h"
 #include "exec/address-spaces.h"
 #endif
+#include "sysemu/cpus.h"
 #include "sysemu/tcg.h"
-#include "sysemu/kvm.h"
 #include "exec/replay-core.h"
 #include "exec/cpu-common.h"
 #include "exec/exec-all.h"
@@ -326,9 +326,14 @@ void cpu_single_step(CPUState *cpu, int enabled)
 {
     if (cpu->singlestep_enabled != enabled) {
         cpu->singlestep_enabled = enabled;
-        if (kvm_enabled()) {
-            kvm_update_guest_debug(cpu, 0);
+
+#if !defined(CONFIG_USER_ONLY)
+        const AccelOpsClass *ops = cpus_get_accel();
+        if (ops->update_guest_debug) {
+            ops->update_guest_debug(cpu);
         }
+#endif
+
         trace_breakpoint_singlestep(cpu->cpu_index, enabled);
     }
 }
-- 
2.34.1