diff options
| author | Alexander Graf <agraf@suse.de> | 2010-08-05 15:44:41 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-10-24 10:52:14 +0200 |
| commit | df08bd10266ce6132278f6b4ddc4bb0a12330b56 (patch) | |
| tree | c0edb224d7b9fa46d18b66e6fcb622005f6e91c3 /arch/powerpc/kernel/kvm_emul.S | |
| parent | 9ee18b1e08e6a5648aeaaf998eabc72b5304cc17 (diff) | |
KVM: PPC: Make PV mtmsrd L=1 work with r30 and r31
We had an arbitrary limitation in mtmsrd L=1 that kept us from using r30 and
r31 as input registers. Let's get rid of that and get more potential speedups!
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kernel/kvm_emul.S')
| -rw-r--r-- | arch/powerpc/kernel/kvm_emul.S | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/kvm_emul.S b/arch/powerpc/kernel/kvm_emul.S index 65305325250..f2b1b2523e6 100644 --- a/arch/powerpc/kernel/kvm_emul.S +++ b/arch/powerpc/kernel/kvm_emul.S @@ -78,7 +78,8 @@ kvm_emulate_mtmsrd: /* OR the register's (MSR_EE|MSR_RI) on MSR */ kvm_emulate_mtmsrd_reg: - andi. r30, r0, (MSR_EE|MSR_RI) + ori r30, r0, 0 + andi. r30, r30, (MSR_EE|MSR_RI) or r31, r31, r30 /* Put MSR back into magic page */ @@ -96,6 +97,7 @@ kvm_emulate_mtmsrd_reg: SCRATCH_RESTORE /* Nag hypervisor */ +kvm_emulate_mtmsrd_orig_ins: tlbsync b kvm_emulate_mtmsrd_branch @@ -117,6 +119,10 @@ kvm_emulate_mtmsrd_branch_offs: kvm_emulate_mtmsrd_reg_offs: .long (kvm_emulate_mtmsrd_reg - kvm_emulate_mtmsrd) / 4 +.global kvm_emulate_mtmsrd_orig_ins_offs +kvm_emulate_mtmsrd_orig_ins_offs: + .long (kvm_emulate_mtmsrd_orig_ins - kvm_emulate_mtmsrd) / 4 + .global kvm_emulate_mtmsrd_len kvm_emulate_mtmsrd_len: .long (kvm_emulate_mtmsrd_end - kvm_emulate_mtmsrd) / 4 |