KVM: PPC: Book3S HV: Flush the correct number of TLB sets on POWER8

POWER8 has 512 sets in the TLB, compared to 128 for POWER7, so we need
to do more tlbiel instructions when flushing the TLB on POWER8.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>

diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 691dd1ef555b205fd0ae85c27e1d6c16803f7bba..19f8819f90fa5829277b7c893db2e338df2be7fd 100644 (file)
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -430,7 +430,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201)
        andc    r7,r7,r0
        stdcx.  r7,0,r6
        bne     23b
-       li      r6,128                  /* and flush the TLB */
+       /* Flush the TLB of any entries for this LPID */
+       /* use arch 2.07S as a proxy for POWER8 */
+BEGIN_FTR_SECTION
+       li      r6,512                  /* POWER8 has 512 sets */
+FTR_SECTION_ELSE
+       li      r6,128                  /* POWER7 has 128 sets */
+ALT_FTR_SECTION_END_IFSET(CPU_FTR_ARCH_207S)
        mtctr   r6
        li      r7,0x800                /* IS field = 0b10 */
        ptesync