From: Mohamed Mediouni <mohamed@unpredictable.fr>
To: qemu-devel@nongnu.org
Cc: Pedro Barbuda <pbarbuda@microsoft.com>,
Mohamed Mediouni <mohamed@unpredictable.fr>
Subject: [PATCH] whpx: i386: skip TSC read for MMIO exits
Date: Mon, 23 Mar 2026 11:38:05 +0100 [thread overview]
Message-ID: <20260323103805.97592-1-mohamed@unpredictable.fr> (raw)
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)
reply other threads:[~2026-03-23 10:38 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=20260323103805.97592-1-mohamed@unpredictable.fr \
--to=mohamed@unpredictable.fr \
--cc=pbarbuda@microsoft.com \
--cc=qemu-devel@nongnu.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