From f326041af5bd8ebebee83dbc296ab853955cd806 Mon Sep 17 00:00:00 2001 From: "plai@redhat.com" Date: Tue, 4 Jun 2019 21:47:21 +0200 Subject: [PATCH 02/23] i386: Add CPUID bit and feature words for IA32_ARCH_CAPABILITIES MSR RH-Author: plai@redhat.com Message-id: <1559684847-10889-3-git-send-email-plai@redhat.com> Patchwork-id: 88533 O-Subject: [RHEL7.7 qemu-kvm-rhev PATCH v4 2/8] i386: Add CPUID bit and feature words for IA32_ARCH_CAPABILITIES MSR Bugzilla: 1709972 RH-Acked-by: Eduardo Habkost RH-Acked-by: Paolo Bonzini RH-Acked-by: Miroslav Rezanina From: Robert Hoo Support of IA32_PRED_CMD MSR already be enumerated by same CPUID bit as SPEC_CTRL. At present, mark CPUID_7_0_EDX_ARCH_CAPABILITIES unmigratable, per Paolo's comment. Signed-off-by: Robert Hoo Message-Id: <1530781798-183214-3-git-send-email-robert.hu@linux.intel.com> Signed-off-by: Eduardo Habkost (cherry picked from commit 3fc7c73139d2d38ae80c3b0bc963b1ac1555924c) Signed-off-by: Paul Lai Signed-off-by: Miroslav Rezanina --- target/i386/cpu.c | 3 ++- target/i386/cpu.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 4558b1a..4c7364b 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1008,12 +1008,13 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "spec-ctrl", "stibp", - NULL, NULL, NULL, "ssbd", + NULL, "arch-capabilities", NULL, "ssbd", }, .cpuid_eax = 7, .cpuid_needs_ecx = true, .cpuid_ecx = 0, .cpuid_reg = R_EDX, .tcg_features = TCG_7_0_EDX_FEATURES, + .unmigratable_flags = CPUID_7_0_EDX_ARCH_CAPABILITIES, }, [FEAT_8000_0007_EDX] = { .feat_names = { diff --git a/target/i386/cpu.h b/target/i386/cpu.h index aabb6c8..eb39724 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -689,6 +689,7 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS]; #define CPUID_7_0_EDX_AVX512_4VNNIW (1U << 2) /* AVX512 Neural Network Instructions */ #define CPUID_7_0_EDX_AVX512_4FMAPS (1U << 3) /* AVX512 Multiply Accumulation Single Precision */ #define CPUID_7_0_EDX_SPEC_CTRL (1U << 26) /* Speculation Control */ +#define CPUID_7_0_EDX_ARCH_CAPABILITIES (1U << 29) /*Arch Capabilities*/ #define CPUID_7_0_EDX_SPEC_CTRL_SSBD (1U << 31) /* Speculative Store Bypass Disable */ #define KVM_HINTS_DEDICATED (1U << 0) -- 1.8.3.1