From: Nicholas Mc Guire <hofrat@xxxxxxxxx> This patch has been added to the 3.12 stable tree. If you have any objections, please let us know. =============== commit 5f508c43a7648baa892528922402f1e13f258bd4 upstream. As kvm_mips_complete_mmio_load() did not yet modify PC at this point as James Hogans <james.hogan@xxxxxxxxxx> explained the curr_pc variable and the comments along with it can be dropped. Signed-off-by: Nicholas Mc Guire <hofrat@xxxxxxxxx> Link: http://lkml.org/lkml/2015/5/8/422 Cc: Gleb Natapov <gleb@xxxxxxxxxx> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> Cc: James Hogan <james.hogan@xxxxxxxxxx> Cc: kvm@xxxxxxxxxxxxxxx Cc: linux-mips@xxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Patchwork: https://patchwork.linux-mips.org/patch/9993/ Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx> [james.hogan@xxxxxxxxxx: Backport to 3.10..3.16] Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- arch/mips/kvm/kvm_mips_emul.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/mips/kvm/kvm_mips_emul.c b/arch/mips/kvm/kvm_mips_emul.c index 7f3fb19d2156..779a376c4cce 100644 --- a/arch/mips/kvm/kvm_mips_emul.c +++ b/arch/mips/kvm/kvm_mips_emul.c @@ -1655,7 +1655,6 @@ kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu, struct kvm_run *run) { unsigned long *gpr = &vcpu->arch.gprs[vcpu->arch.io_gpr]; enum emulation_result er = EMULATE_DONE; - unsigned long curr_pc; if (run->mmio.len > sizeof(*gpr)) { printk("Bad MMIO length: %d", run->mmio.len); @@ -1663,11 +1662,6 @@ kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu, struct kvm_run *run) goto done; } - /* - * Update PC and hold onto current PC in case there is - * an error and we want to rollback the PC - */ - curr_pc = vcpu->arch.pc; er = update_pc(vcpu, vcpu->arch.pending_load_cause); if (er == EMULATE_FAIL) return er; -- 2.10.2
