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authorAvi Kivity <avi@redhat.com>2012-04-18 19:22:47 +0300
committerMarcelo Tosatti <mtosatti@redhat.com>2012-04-19 20:35:07 -0300
commitf78146b0f9230765c6315b2e14f56112513389ad (patch)
tree2e6780f2989c73c1bf214a5728514c1dc8e15f09 /arch/ia64/include
parenteac0556750e727ff39144a9a9e59d5ccf1fc0e2a (diff)
downloadblackbird-op-linux-f78146b0f9230765c6315b2e14f56112513389ad.tar.gz
blackbird-op-linux-f78146b0f9230765c6315b2e14f56112513389ad.zip
KVM: Fix page-crossing MMIO
MMIO that are split across a page boundary are currently broken - the code does not expect to be aborted by the exit to userspace for the first MMIO fragment. This patch fixes the problem by generalizing the current code for handling 16-byte MMIOs to handle a number of "fragments", and changes the MMIO code to create those fragments. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/ia64/include')
-rw-r--r--arch/ia64/include/asm/kvm_host.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/kvm_host.h b/arch/ia64/include/asm/kvm_host.h
index c4b4bac3d09e..6d6a5ac48d85 100644
--- a/arch/ia64/include/asm/kvm_host.h
+++ b/arch/ia64/include/asm/kvm_host.h
@@ -449,6 +449,8 @@ struct kvm_vcpu_arch {
char log_buf[VMM_LOG_LEN];
union context host;
union context guest;
+
+ char mmio_data[8];
};
struct kvm_vm_stat {
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