Add 'r' to register name r2 in kvmppc_hv_enter.

Also update comment at the top of kvmppc_hv_enter to indicate that R2/TOC is
non-volatile.

Signed-off-by: Michael Neuling <mi...@neuling.org>
Signed-off-by: Paul Mackerras <pau...@samba.org>
---
 arch/powerpc/kvm/book3s_hv_rmhandlers.S | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S 
b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index c4bd2d7..1e8c480 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -355,6 +355,7 @@ kvmppc_hv_entry:
         * MSR = ~IR|DR
         * R13 = PACA
         * R1 = host R1
+        * R2 = TOC
         * all other volatile GPRS = free
         */
        mflr    r0
@@ -503,7 +504,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
 toc_tlbie_lock:
        .tc     native_tlbie_lock[TC],native_tlbie_lock
        .previous
-       ld      r3,toc_tlbie_lock@toc(2)
+       ld      r3,toc_tlbie_lock@toc(r2)
 #ifdef __BIG_ENDIAN__
        lwz     r8,PACA_LOCK_TOKEN(r13)
 #else
-- 
1.9.1

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