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From 71b9824a243c47739730c263107b0e49f459db28 Mon Sep 17 00:00:00 2001
From: Eduardo Habkost <ehabkost@redhat.com>
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 <ehabkost@redhat.com>
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 <mrezanin@redhat.com>
RH-Acked-by: Bandan Das <bsd@redhat.com>
RH-Acked-by: Igor Mammedov <imammedo@redhat.com>

From: Robert Hoo <robert.hu@linux.intel.com>

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 <robert.hu@linux.intel.com>
Message-Id: <1530781798-183214-2-git-send-email-robert.hu@linux.intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
(cherry picked from commit 8c80c99fcceabd0708a5a83f08577e778c9419f5)
Signed-off-by: Paul Lai <plai@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 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