3 files changed, 40 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index d7e67ca8b4a6..594db6bc093c 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -284,6 +284,12 @@ struct thread_struct {
         unsigned long   ebbrr;
         unsigned long   ebbhr;
         unsigned long   bescr;
+        unsigned long   siar;
+        unsigned long   sdar;
+        unsigned long   sier;
+        unsigned long   mmcr0;
+        unsigned long   mmcr2;
+        unsigned long   mmcra;
 #endif
 };
 
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index b51a97cfedf8..6f16ffafa6f0 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -127,6 +127,12 @@ int main(void)
         DEFINE(THREAD_BESCR, offsetof(struct thread_struct, bescr));
         DEFINE(THREAD_EBBHR, offsetof(struct thread_struct, ebbhr));
         DEFINE(THREAD_EBBRR, offsetof(struct thread_struct, ebbrr));
+        DEFINE(THREAD_SIAR, offsetof(struct thread_struct, siar));
+        DEFINE(THREAD_SDAR, offsetof(struct thread_struct, sdar));
+        DEFINE(THREAD_SIER, offsetof(struct thread_struct, sier));
+        DEFINE(THREAD_MMCR0, offsetof(struct thread_struct, mmcr0));
+        DEFINE(THREAD_MMCR2, offsetof(struct thread_struct, mmcr2));
+        DEFINE(THREAD_MMCRA, offsetof(struct thread_struct, mmcra));
 #endif
 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
         DEFINE(PACATMSCRATCH, offsetof(struct paca_struct, tm_scratch));
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 51cfb8fc301f..0e9095e47b5b 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -465,6 +465,20 @@ BEGIN_FTR_SECTION
         std     r0, THREAD_EBBHR(r3)
         mfspr   r0, SPRN_EBBRR
         std     r0, THREAD_EBBRR(r3)
+
+        /* PMU registers made user read/(write) by EBB */
+        mfspr   r0, SPRN_SIAR
+        std     r0, THREAD_SIAR(r3)
+        mfspr   r0, SPRN_SDAR
+        std     r0, THREAD_SDAR(r3)
+        mfspr   r0, SPRN_SIER
+        std     r0, THREAD_SIER(r3)
+        mfspr   r0, SPRN_MMCR0
+        std     r0, THREAD_MMCR0(r3)
+        mfspr   r0, SPRN_MMCR2
+        std     r0, THREAD_MMCR2(r3)
+        mfspr   r0, SPRN_MMCRA
+        std     r0, THREAD_MMCRA(r3)
 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
 #endif
 
@@ -560,6 +574,20 @@ BEGIN_FTR_SECTION
         ld      r0, THREAD_EBBRR(r4)
         mtspr   SPRN_EBBRR, r0
 
+        /* PMU registers made user read/(write) by EBB */
+        ld      r0, THREAD_SIAR(r4)
+        mtspr   SPRN_SIAR, r0
+        ld      r0, THREAD_SDAR(r4)
+        mtspr   SPRN_SDAR, r0
+        ld      r0, THREAD_SIER(r4)
+        mtspr   SPRN_SIER, r0
+        ld      r0, THREAD_MMCR0(r4)
+        mtspr   SPRN_MMCR0, r0
+        ld      r0, THREAD_MMCR2(r4)
+        mtspr   SPRN_MMCR2, r0
+        ld      r0, THREAD_MMCRA(r4)
+        mtspr   SPRN_MMCRA, r0
+
         ld      r0,THREAD_TAR(r4)
         mtspr   SPRN_TAR,r0
 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)