Andi Kleen wrote:
KVM: Add VT-x machine check support v2
VT-x needs an explicit MC vector intercept to handle machine checks in the
hyper visor.
It also has a special option to catch machine checks that happen
during VT entry.
Do these interceptions and forward them to the Linux machine check
handler. Make it always look like user space is interrupted because
the machine check handler treats kernel/user space differently.
Thanks to Huang Ying and Jiang Yunhong for help and testing.
Cc: ying.huang@xxxxxxxxx
v2: Handle machine checks still in interrupt off context
to avoid problems on preemptible kernels.
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Only applies with -C0. What tree was this generated against?
Please diff and test against latest kvm.git.
===================================================================
--- linux.orig/arch/x86/include/asm/kvm_host.h 2009-06-04 16:12:31.000000000 +0200
+++ linux/arch/x86/include/asm/kvm_host.h 2009-06-04 16:15:20.000000000 +0200
@@ -371,6 +371,8 @@
unsigned long dr6;
unsigned long dr7;
unsigned long eff_db[KVM_NR_DB_REGS];
+
+ u32 exit_reason;
};
This should be in 'struct vcpu_vmx' (vmx.c), as it's vmx specific.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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