From: Mohamed Mediouni <mohamed@unpredictable.fr>
To: qemu-devel@nongnu.org
Cc: Mohamed Mediouni <mohamed@unpredictable.fr>,
Wei Liu <wei.liu@kernel.org>,
Phil Dennis-Jordan <phil@philjordan.eu>,
Pedro Barbuda <pbarbuda@microsoft.com>,
Roman Bolshakov <rbolshakov@ddn.com>
Subject: [PATCH 04/12] whpx: i386: skip XCRs read for MMIO exits
Date: Mon, 23 Mar 2026 20:36:37 +0100 [thread overview]
Message-ID: <20260323193645.82602-5-mohamed@unpredictable.fr> (raw)
In-Reply-To: <20260323193645.82602-1-mohamed@unpredictable.fr>
The XCR0 value isn't currently needed for vmexit processing.
Signed-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>
---
target/i386/whpx/whpx-all.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c
index ac03445d9d..c0c7ba9177 100644
--- a/target/i386/whpx/whpx-all.c
+++ b/target/i386/whpx/whpx-all.c
@@ -689,7 +689,9 @@ void whpx_get_registers(CPUState *cpu, WHPXStateLevel level)
* Extended control registers needs to be handled separately depending
* on whether xsave is supported/enabled or not.
*/
- whpx_get_xcrs(cpu);
+ if (level > WHPX_LEVEL_FAST_RUNTIME_STATE) {
+ whpx_get_xcrs(cpu);
+ }
/* 16 XMM registers */
assert(whpx_register_names[idx] == WHvX64RegisterXmm0);
--
2.50.1 (Apple Git-155)
next prev parent reply other threads:[~2026-03-23 19:38 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-23 19:36 [PATCH 00/12] whpx: i386: Windows 10 and performance fixes Mohamed Mediouni
2026-03-23 19:36 ` [PATCH 01/12] whpx: i386: workaround for Windows 10 support Mohamed Mediouni
2026-03-23 19:36 ` [PATCH 02/12] whpx: i386: enable exceptions VM exit only when needed Mohamed Mediouni
2026-03-23 19:36 ` [PATCH 03/12] whpx: i386: skip TSC read for MMIO exits Mohamed Mediouni
2026-03-23 19:36 ` Mohamed Mediouni [this message]
2026-03-23 19:36 ` [PATCH 05/12] whpx: i386: don't restore segment registers after MMIO handling Mohamed Mediouni
2026-03-23 19:36 ` [PATCH 06/12] target/i386: emulate: add new callbacks Mohamed Mediouni
2026-03-23 19:36 ` [PATCH 07/12] whpx: i386: add implementation of new x86_emul_ops Mohamed Mediouni
2026-03-23 19:36 ` [PATCH 08/12] target/i386: emulate: indirect access to CRs Mohamed Mediouni
2026-03-23 19:36 ` [PATCH 09/12] whpx: i386: " Mohamed Mediouni
2026-03-23 19:36 ` [PATCH 10/12] target/i386: emulate: segmentation rework Mohamed Mediouni
2026-03-23 19:36 ` [PATCH 11/12] whpx: i386: fetch segments on-demand Mohamed Mediouni
2026-03-23 19:36 ` [PATCH 12/12] whpx: i386: fast runtime state reads Mohamed Mediouni
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