diff options
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_rmhandlers.S | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index 3d1023b03d5a..af1772169eff 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -892,8 +892,14 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) ld r6, VCPU_DAWRX(r4) ld r7, VCPU_CIABR(r4) ld r8, VCPU_TAR(r4) + /* + * Handle broken DAWR case by not writing it. This means we + * can still store the DAWR register for migration. + */ +BEGIN_FTR_SECTION mtspr SPRN_DAWR, r5 mtspr SPRN_DAWRX, r6 +END_FTR_SECTION_IFSET(CPU_FTR_DAWR) mtspr SPRN_CIABR, r7 mtspr SPRN_TAR, r8 ld r5, VCPU_IC(r4) @@ -1855,6 +1861,10 @@ BEGIN_FTR_SECTION ld r6, STACK_SLOT_DAWR(r1) ld r7, STACK_SLOT_DAWRX(r1) mtspr SPRN_CIABR, r5 + /* + * If the DAWR doesn't work, it's ok to write these here as + * this value should always be zero + */ mtspr SPRN_DAWR, r6 mtspr SPRN_DAWRX, r7 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) |