From 71b9824a243c47739730c263107b0e49f459db28 Mon Sep 17 00:00:00 2001 From: Eduardo Habkost Date: Wed, 9 Oct 2019 17:51:41 +0200 Subject: [PATCH 03/10] i386: Add new MSR indices for IA32_PRED_CMD and IA32_ARCH_CAPABILITIES RH-Author: Eduardo Habkost Message-id: <20191009175148.1361-4-ehabkost@redhat.com> Patchwork-id: 91359 O-Subject: [RHEL-7.7.z qemu-kvm PATCH 03/10] i386: Add new MSR indices for IA32_PRED_CMD and IA32_ARCH_CAPABILITIES Bugzilla: 1730606 RH-Acked-by: Miroslav Rezanina RH-Acked-by: Bandan Das RH-Acked-by: Igor Mammedov From: Robert Hoo IA32_PRED_CMD MSR gives software a way to issue commands that affect the state of indirect branch predictors. Enumerated by CPUID.(EAX=7H,ECX=0):EDX[26]. IA32_ARCH_CAPABILITIES MSR enumerates architectural features of RDCL_NO and IBRS_ALL. Enumerated by CPUID.(EAX=07H, ECX=0):EDX[29]. https://software.intel.com/sites/default/files/managed/c5/63/336996-Speculative-Execution-Side-Channel-Mitigations.pdf Signed-off-by: Robert Hoo Message-Id: <1530781798-183214-2-git-send-email-robert.hu@linux.intel.com> Signed-off-by: Eduardo Habkost (cherry picked from commit 8c80c99fcceabd0708a5a83f08577e778c9419f5) Signed-off-by: Paul Lai Signed-off-by: Eduardo Habkost Signed-off-by: Miroslav Rezanina --- target-i386/cpu.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target-i386/cpu.h b/target-i386/cpu.h index 5d47ab8..ea5df77 100644 --- a/target-i386/cpu.h +++ b/target-i386/cpu.h @@ -306,6 +306,8 @@ #define MSR_TSC_ADJUST 0x0000003b #define MSR_IA32_SPEC_CTRL 0x48 #define MSR_VIRT_SSBD 0xc001011f +#define MSR_IA32_PRED_CMD 0x49 +#define MSR_IA32_ARCH_CAPABILITIES 0x10a #define MSR_IA32_TSCDEADLINE 0x6e0 #define MSR_P6_PERFCTR0 0xc1 -- 1.8.3.1