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| author | James Hogan <james.hogan@imgtec.com> | 2016-06-23 17:34:44 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-07-05 16:08:53 +0200 |
| commit | 025014e3fb8f6afab92d3050c3423e2b1ffcbc84 (patch) | |
| tree | 4f6970834d5cb8272486a771623b7f60129045a4 /arch/mips | |
| parent | 38ea7a715d43752e1c53d5a0c3cbab5e321f22f7 (diff) | |
| download | linux-025014e3fb8f6afab92d3050c3423e2b1ffcbc84.tar.gz | |
MIPS: KVM: Drop redundant restore of DDATA_LO
On return from the exit handler to the host (without re-entering the guest) we restore the saved value of the DDATA_LO register which we use as a scratch register. However we've already restored it ready for calling the exit handler so there is no need to do it again, so drop that code. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim KrÄmář <rkrcmar@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/kvm/entry.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/mips/kvm/entry.c b/arch/mips/kvm/entry.c index 53e1e576d18a..6395bfa7e542 100644 --- a/arch/mips/kvm/entry.c +++ b/arch/mips/kvm/entry.c @@ -581,10 +581,6 @@ static void *kvm_mips_build_ret_to_host(void *addr) UASM_i_LW(&p, K1, offsetof(struct kvm_vcpu_arch, host_stack), K1); uasm_i_addiu(&p, K1, K1, -(int)sizeof(struct pt_regs)); - /* Restore host DDATA_LO */ - UASM_i_LW(&p, K0, offsetof(struct pt_regs, cp0_epc), K1); - uasm_i_mtc0(&p, K0, C0_DDATA_LO); - /* * r2/v0 is the return code, shift it down by 2 (arithmetic) * to recover the err code |