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i386-cpu-Clear-FEAT_XSAVE_XSS_LO-HI-leafs-when-CPUID.patch 1.31 KB
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Jiabo Feng 提交于 2024-03-23 09:20 . QEMU update to version 8.2.0-2
From c952c9acfab98a83122b4e6d406f4a7a0dfe871f Mon Sep 17 00:00:00 2001
From: Xiaoyao Li <xiaoyao.li@intel.com>
Date: Mon, 15 Jan 2024 04:13:24 -0500
Subject: [PATCH] i386/cpu: Clear FEAT_XSAVE_XSS_LO/HI leafs when
CPUID_EXT_XSAVE is not available
commit 81f5cad3858f27623b1b14467926032d229b76cc upstream.
Leaf FEAT_XSAVE_XSS_LO and FEAT_XSAVE_XSS_HI also need to be cleared
when CPUID_EXT_XSAVE is not set.
Fixes: 301e90675c3f ("target/i386: Enable support for XSAVES based features")
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Yang Weijiang <weijiang.yang@intel.com>
Message-ID: <20240115091325.1904229-2-xiaoyao.li@intel.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jason Zeng <jason.zeng@intel.com>
---
target/i386/cpu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index cd16cb893d..8b9ef218d3 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -6927,6 +6927,8 @@ static void x86_cpu_enable_xsave_components(X86CPU *cpu)
if (!(env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE)) {
env->features[FEAT_XSAVE_XCR0_LO] = 0;
env->features[FEAT_XSAVE_XCR0_HI] = 0;
+ env->features[FEAT_XSAVE_XSS_LO] = 0;
+ env->features[FEAT_XSAVE_XSS_HI] = 0;
return;
}
--
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