x86/speculation/mds: Add basic bug infrastructure for MDS

[mirror_ubuntu-bionic-kernel.git] / arch / x86 / include / asm / msr-index.h

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 34c4922bbc3fb5ed95cb0819d7ac6b9cd37a7f41..7ca92f9b5eae7bef36b62790af33f7c9c2b1fae5 100644 (file)
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -2,6 +2,8 @@
 #ifndef _ASM_X86_MSR_INDEX_H
 #define _ASM_X86_MSR_INDEX_H
 
+#include <linux/bits.h>
+
 /*
  * CPU model specific register (MSR) numbers.
  *
@@ -39,6 +41,16 @@
 
 /* Intel MSRs. Some also available on other CPUs */
 
+#define MSR_IA32_SPEC_CTRL             0x00000048 /* Speculation Control */
+#define SPEC_CTRL_IBRS                 BIT(0)     /* Indirect Branch Restricted Speculation */
+#define SPEC_CTRL_STIBP_SHIFT          1          /* Single Thread Indirect Branch Predictor (STIBP) bit */
+#define SPEC_CTRL_STIBP                        BIT(SPEC_CTRL_STIBP_SHIFT)      /* STIBP mask */
+#define SPEC_CTRL_SSBD_SHIFT           2          /* Speculative Store Bypass Disable bit */
+#define SPEC_CTRL_SSBD                 BIT(SPEC_CTRL_SSBD_SHIFT)       /* Speculative Store Bypass Disable */
+
+#define MSR_IA32_PRED_CMD              0x00000049 /* Prediction Command */
+#define PRED_CMD_IBPB                  BIT(0)     /* Indirect Branch Prediction Barrier */
+
 #define MSR_PPIN_CTL                   0x0000004e
 #define MSR_PPIN                       0x0000004f
 
@@ -57,6 +69,28 @@
 #define SNB_C3_AUTO_UNDEMOTE           (1UL << 28)
 
 #define MSR_MTRRcap                    0x000000fe
+
+#define MSR_IA32_ARCH_CAPABILITIES     0x0000010a
+#define ARCH_CAP_RDCL_NO               BIT(0)  /* Not susceptible to Meltdown */
+#define ARCH_CAP_IBRS_ALL              BIT(1)  /* Enhanced IBRS support */
+#define ARCH_CAP_SKIP_VMENTRY_L1DFLUSH BIT(3)  /* Skip L1D flush on vmentry */
+#define ARCH_CAP_SSB_NO                        BIT(4)  /*
+                                                * Not susceptible to Speculative Store Bypass
+                                                * attack, so no Speculative Store Bypass
+                                                * control required.
+                                                */
+#define ARCH_CAP_MDS_NO                        BIT(5)   /*
+                                                 * Not susceptible to
+                                                 * Microarchitectural Data
+                                                 * Sampling (MDS) vulnerabilities.
+                                                 */
+
+#define MSR_IA32_FLUSH_CMD             0x0000010b
+#define L1D_FLUSH                      BIT(0)  /*
+                                                * Writeback and invalidate the
+                                                * L1 data cache.
+                                                */
+
 #define MSR_IA32_BBL_CR_CTL            0x00000119
 #define MSR_IA32_BBL_CR_CTL3           0x0000011e
 
@@ -328,6 +362,8 @@
 #define MSR_AMD64_SEV_ENABLED_BIT      0
 #define MSR_AMD64_SEV_ENABLED          BIT_ULL(MSR_AMD64_SEV_ENABLED_BIT)
 
+#define MSR_AMD64_VIRT_SPEC_CTRL       0xc001011f
+
 /* Fam 17h MSRs */
 #define MSR_F17H_IRPERF                        0xc00000e9
 
@@ -355,6 +391,9 @@
 #define FAM10H_MMIO_CONF_BASE_MASK     0xfffffffULL
 #define FAM10H_MMIO_CONF_BASE_SHIFT    20
 #define MSR_FAM10H_NODE_ID             0xc001100c
+#define MSR_F10H_DECFG                 0xc0011029
+#define MSR_F10H_DECFG_LFENCE_SERIALIZE_BIT    1
+#define MSR_F10H_DECFG_LFENCE_SERIALIZE                BIT_ULL(MSR_F10H_DECFG_LFENCE_SERIALIZE_BIT)
 
 /* K8 MSRs */
 #define MSR_K8_TOP_MEM1                        0xc001001a