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| author | James Hogan <james.hogan@imgtec.com> | 2014-05-29 10:16:25 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-05-30 12:59:54 +0200 |
| commit | facaaec1a72db90127b71d22e788596cf1991ae1 (patch) | |
| tree | ad02ed426464fafa7b56eadd7514eb3f9c9d7d4b /arch/mips/kvm/kvm_mips.c | |
| parent | 90f91356c7d67ddd98d817838df69335cb831eaa (diff) | |
| download | op-kernel-dev-facaaec1a72db90127b71d22e788596cf1991ae1.zip op-kernel-dev-facaaec1a72db90127b71d22e788596cf1991ae1.tar.gz | |
MIPS: KVM: Use local_flush_icache_range to fix RI on XBurst
MIPS KVM uses mips32_SyncICache to synchronise the icache with the
dcache after dynamically modifying guest instructions or writing guest
exception vector. However this uses rdhwr to get the SYNCI step, which
causes a reserved instruction exception on Ingenic XBurst cores.
It would seem to make more sense to use local_flush_icache_range()
instead which does the same thing but is more portable.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/mips/kvm/kvm_mips.c')
| -rw-r--r-- | arch/mips/kvm/kvm_mips.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c index 1e12762..2a80a90 100644 --- a/arch/mips/kvm/kvm_mips.c +++ b/arch/mips/kvm/kvm_mips.c @@ -345,7 +345,8 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) mips32_GuestExceptionEnd - mips32_GuestException); /* Invalidate the icache for these ranges */ - mips32_SyncICache((unsigned long) gebase, ALIGN(size, PAGE_SIZE)); + local_flush_icache_range((unsigned long)gebase, + (unsigned long)gebase + ALIGN(size, PAGE_SIZE)); /* Allocate comm page for guest kernel, a TLB will be reserved for mapping GVA @ 0xFFFF8000 to this page */ vcpu->arch.kseg0_commpage = kzalloc(PAGE_SIZE << 1, GFP_KERNEL); |
