[PATCH 3.16 182/370] KVM: MIPS: Flush KVM entry code from icache globally

Ben Hutchings
2017-03-10T12:17:59Z

From: James Hogan <james.hogan@imgtec.com>

commit 32eb12a6c11034867401d56b012e3c15d5f8141e upstream.

Flush the KVM entry code from the icache on all CPUs, not just the one
that built the entry code.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
[bwh: Backported to 3.16: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/mips/kvm/kvm_mips.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/mips/kvm/kvm_mips.c
+++ b/arch/mips/kvm/kvm_mips.c
@@ -343,8 +343,8 @@ struct kvm_vcpu *kvm_arch_vcpu_create(st
mips32_GuestExceptionEnd - mips32_GuestException);

/* Invalidate the icache for these ranges */
- local_flush_icache_range((unsigned long)gebase,
- (unsigned long)gebase + ALIGN(size, PAGE_SIZE));
+ 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);