From e5f76077a47460bcba0bdfc1d70c7b79f84d18b7 Mon Sep 17 00:00:00 2001 From: "plai@redhat.com" Date: Tue, 20 Aug 2019 00:24:33 +0100 Subject: [PATCH 2/9] i386: Add CPUID bit and feature words for IA32_ARCH_CAPABILITIES MSR RH-Author: plai@redhat.com Message-id: <1566260680-20995-3-git-send-email-plai@redhat.com> Patchwork-id: 90066 O-Subject: [RHEL8.0 qemu-kvm PATCH v3 2/9] i386: Add CPUID bit and feature words for IA32_ARCH_CAPABILITIES MSR Bugzilla: 1718235 RH-Acked-by: Eduardo Habkost RH-Acked-by: John Snow RH-Acked-by: Igor Mammedov 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 Resolved Conflicts: target/i386/cpu.c Signed-off-by: Danilo C. L. de Paula --- 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 c979feb..6d38ac0 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 1dc565c..e5e5169 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -687,6 +687,7 @@ 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