The patch titled
KVM: Improve reporting of vmwrite errors
has been removed from the -mm tree. Its filename was
kvm-improve-reporting-of-vmwrite-errors.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: KVM: Improve reporting of vmwrite errors
From: Avi Kivity <avi@xxxxxxxxxxxx>
This will allow us to see the root cause when a vmwrite error happens.
Signed-off-by: Avi Kivity <avi@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/kvm/vmx.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff -puN drivers/kvm/vmx.c~kvm-improve-reporting-of-vmwrite-errors drivers/kvm/vmx.c
--- a/drivers/kvm/vmx.c~kvm-improve-reporting-of-vmwrite-errors
+++ a/drivers/kvm/vmx.c
@@ -152,15 +152,21 @@ static u64 vmcs_read64(unsigned long fie
#endif
}
+static noinline void vmwrite_error(unsigned long field, unsigned long value)
+{
+ printk(KERN_ERR "vmwrite error: reg %lx value %lx (err %d)\n",
+ field, value, vmcs_read32(VM_INSTRUCTION_ERROR));
+ dump_stack();
+}
+
static void vmcs_writel(unsigned long field, unsigned long value)
{
u8 error;
asm volatile (ASM_VMX_VMWRITE_RAX_RDX "; setna %0"
: "=q"(error) : "a"(value), "d"(field) : "cc" );
- if (error)
- printk(KERN_ERR "vmwrite error: reg %lx value %lx (err %d)\n",
- field, value, vmcs_read32(VM_INSTRUCTION_ERROR));
+ if (unlikely(error))
+ vmwrite_error(field, value);
}
static void vmcs_write16(unsigned long field, u16 value)
_
Patches currently in -mm which might be from avi@xxxxxxxxxxxx are
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