From: Mohamed Mediouni <mohamed@unpredictable.fr>
To: qemu-devel@nongnu.org
Cc: Roman Bolshakov <rbolshakov@ddn.com>,
Mohamed Mediouni <mohamed@unpredictable.fr>,
Wei Liu <wei.liu@kernel.org>,
Phil Dennis-Jordan <phil@philjordan.eu>,
Pedro Barbuda <pbarbuda@microsoft.com>
Subject: [PATCH v3 03/12] whpx: i386: skip TSC read for MMIO exits
Date: Tue, 24 Mar 2026 16:13:14 +0100 [thread overview]
Message-ID: <20260324151323.74473-4-mohamed@unpredictable.fr> (raw)
In-Reply-To: <20260324151323.74473-1-mohamed@unpredictable.fr>
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 8f1835ee95..ac03445d9d 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)
next prev parent reply other threads:[~2026-03-24 15:15 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-24 15:13 [PATCH v3 00/12] whpx: i386: Windows 10 and performance fixes Mohamed Mediouni
2026-03-24 15:13 ` [PATCH v3 01/12] whpx: i386: workaround for Windows 10 support Mohamed Mediouni
2026-03-24 15:13 ` [PATCH v3 02/12] whpx: i386: enable exceptions VM exit only when needed Mohamed Mediouni
2026-03-24 15:13 ` Mohamed Mediouni [this message]
2026-03-24 15:13 ` [PATCH v3 04/12] whpx: i386: skip XCRs read for MMIO exits Mohamed Mediouni
2026-03-24 15:13 ` [PATCH v3 05/12] whpx: i386: don't restore segment registers after MMIO handling Mohamed Mediouni
2026-03-24 15:13 ` [PATCH v3 06/12] target/i386: emulate: add new callbacks Mohamed Mediouni
2026-03-24 15:13 ` [PATCH v3 07/12] whpx: i386: add implementation of new x86_emul_ops Mohamed Mediouni
2026-03-24 15:13 ` [PATCH v3 08/12] target/i386: emulate: indirect access to CRs Mohamed Mediouni
2026-03-24 15:13 ` [PATCH v3 09/12] whpx: i386: " Mohamed Mediouni
2026-03-24 15:13 ` [PATCH v3 10/12] target/i386: emulate: segmentation rework Mohamed Mediouni
2026-03-24 15:13 ` [PATCH v3 11/12] whpx: i386: fetch segments on-demand Mohamed Mediouni
2026-03-24 15:13 ` [PATCH v3 12/12] whpx: i386: fast runtime state reads Mohamed Mediouni
2026-03-24 15:20 ` [PATCH v3 00/12] whpx: i386: Windows 10 and performance fixes Mohamed Mediouni
2026-03-24 17:19 ` Paolo Bonzini
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