Add the missing bits for the character and behaviour masks used to
indicate the valid bits in the result of KVM_PPC_GET_CPU_CHAR ioctl
used by KVM guests to know the host mitigation status.

Signed-off-by: Gautam Menghani <[email protected]>
---
 arch/powerpc/include/uapi/asm/kvm.h |  6 ++++++
 arch/powerpc/kvm/powerpc.c          | 10 ++++++++--
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/include/uapi/asm/kvm.h 
b/arch/powerpc/include/uapi/asm/kvm.h
index 077c5437f521..19ad60fb9147 100644
--- a/arch/powerpc/include/uapi/asm/kvm.h
+++ b/arch/powerpc/include/uapi/asm/kvm.h
@@ -450,11 +450,17 @@ struct kvm_ppc_cpu_char {
 #define KVM_PPC_CPU_CHAR_MTTRIG_THR_RECONF     (1ULL << 57)
 #define KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS       (1ULL << 56)
 #define KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST    (1ull << 54)
+#define KVM_PPC_CPU_CHAR_BCCTR_LINK_FLUSH_ASSIST (1ull << 52)
 
 #define KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY      (1ULL << 63)
 #define KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR         (1ULL << 62)
 #define KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR    (1ULL << 61)
+#define KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY_H    (1ull << 60)
 #define KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE    (1ull << 58)
+#define KVM_PPC_CPU_BEHAV_FLUSH_LINK_STACK     (1ull << 57)
+#define KVM_PPC_CPU_BEHAV_NO_L1D_FLUSH_ENTRY   (1ull << 56)
+#define KVM_PPC_CPU_BEHAV_NO_L1D_FLUSH_UACCESS (1ull << 55)
+#define KVM_PPC_CPU_BEHAV_NO_STF_BARRIER       (1ull << 54)
 
 /* Per-vcpu XICS interrupt controller state */
 #define KVM_REG_PPC_ICP_STATE  (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x8c)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 2ba057171ebe..642740c86272 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -2261,11 +2261,17 @@ static int pseries_get_cpu_char(struct kvm_ppc_cpu_char 
*cp)
                        KVM_PPC_CPU_CHAR_BR_HINT_HONOURED |
                        KVM_PPC_CPU_CHAR_MTTRIG_THR_RECONF |
                        KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS |
-                       KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
+                       KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST |
+                       KVM_PPC_CPU_CHAR_BCCTR_LINK_FLUSH_ASSIST;
                cp->behaviour_mask = KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY |
                        KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR |
                        KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR |
-                       KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
+                       KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY_H |
+                       KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE |
+                       KVM_PPC_CPU_BEHAV_FLUSH_LINK_STACK |
+                       KVM_PPC_CPU_BEHAV_NO_L1D_FLUSH_ENTRY |
+                       KVM_PPC_CPU_BEHAV_NO_L1D_FLUSH_UACCESS |
+                       KVM_PPC_CPU_BEHAV_NO_STF_BARRIER;
        }
        return 0;
 }
-- 
2.50.1 (Apple Git-155)


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