whpx: i386: skip TSC read for MMIO exits

[PATCH] whpx: i386: skip TSC read for MMIO exits

Mohamed Mediouni posted 1 patch 1 week, 4 days ago

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Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20260323103805.97592-1-mohamed@unpredictable.fr

Maintainers: Pedro Barbuda <pbarbuda@microsoft.com>, Mohamed Mediouni <mohamed@unpredictable.fr>

target/i386/whpx/whpx-all.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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[PATCH] whpx: i386: skip TSC read for MMIO exits

Posted by Mohamed Mediouni 1 week, 4 days ago

The TSC value isn't needed for vmexit processing.

Signed-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>
---
 target/i386/whpx/whpx-all.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c
index 015c0f1dc9..5ac7fbdf7a 100644
--- a/target/i386/whpx/whpx-all.c
+++ b/target/i386/whpx/whpx-all.c
@@ -606,7 +606,7 @@ void whpx_get_registers(CPUState *cpu, WHPXStateLevel level)
 
     assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
 
-    if (!env->tsc_valid) {
+    if (level > WHPX_LEVEL_FAST_RUNTIME_STATE && !env->tsc_valid) {
         whpx_get_tsc(cpu);
         env->tsc_valid = !runstate_is_running();
     }
-- 
2.50.1 (Apple Git-155)