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57 lines
2.1 KiB
57 lines
2.1 KiB
1 month ago
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From a246db2fbd892b572fced12da843628f1aab8cd2 Mon Sep 17 00:00:00 2001
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From: Tao Su <tao1.su@linux.intel.com>
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Date: Thu, 31 Oct 2024 16:52:32 +0800
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Subject: [PATCH 36/38] target/i386: Add AVX512 state when AVX10 is supported
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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RH-MergeRequest: 280: Add support for the AVX10.1, SHA512, SM3 and SM4 instruction sets
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RH-Jira: RHEL-30315 RHEL-45110
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RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Commit: [7/9] 6f791fae9a3255140795b709435b25159226becf (bonzini/rhel-qemu-kvm)
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AVX10 state enumeration in CPUID leaf D and enabling in XCR0 register
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are identical to AVX512 state regardless of the supported vector lengths.
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Given that some E-cores will support AVX10 but not support AVX512, add
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AVX512 state components to guest when AVX10 is enabled.
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Based on a patch by Tao Su <tao1.su@linux.intel.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
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Tested-by: Xuelian Guo <xuelian.guo@intel.com>
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Signed-off-by: Tao Su <tao1.su@linux.intel.com>
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Link: https://lore.kernel.org/r/20241031085233.425388-8-tao1.su@linux.intel.com
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit 0d7475be3b402c25d74c5a4573cbeb733c8f3559)
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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target/i386/cpu.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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diff --git a/target/i386/cpu.c b/target/i386/cpu.c
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index a740429fdd..ddec461dd4 100644
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--- a/target/i386/cpu.c
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+++ b/target/i386/cpu.c
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@@ -7140,7 +7140,15 @@ static bool cpuid_has_xsave_feature(CPUX86State *env, const ExtSaveArea *esa)
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return false;
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}
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- return (env->features[esa->feature] & esa->bits);
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+ if (env->features[esa->feature] & esa->bits) {
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+ return true;
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+ }
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+ if (esa->feature == FEAT_7_0_EBX && esa->bits == CPUID_7_0_EBX_AVX512F
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+ && (env->features[FEAT_7_1_EDX] & CPUID_7_1_EDX_AVX10)) {
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+ return true;
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+ }
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+
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+ return false;
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}
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static void x86_cpu_reset_hold(Object *obj, ResetType type)
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--
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2.39.3
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