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Commit a295673a authored by Avi Kivity's avatar Avi Kivity
Browse files

KVM: VMX: Return 0 from a failed VMREAD 



If we execute VMREAD during reboot we'll just skip over it.  Instead of
returning garbage, return 0, which has a much smaller chance of confusing
the code.  Otherwise we risk a flood of debug printk()s which block the
reboot process if a serial console or netconsole is enabled.

Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent b7c4145b

arch/x86/kvm/vmx.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -565,10 +565,10 @@ static inline void ept_sync_individual_addr(u64 eptp, gpa_t gpa) 




static unsigned long vmcs_readl(unsigned long field)

static unsigned long vmcs_readl(unsigned long field)

{

{

	unsigned long value;

	unsigned long value = 0;





	asm volatile (__ex(ASM_VMX_VMREAD_RDX_RAX)

	asm volatile (__ex(ASM_VMX_VMREAD_RDX_RAX)

		      : "=a"(value) : "d"(field) : "cc");

		      : "+a"(value) : "d"(field) : "cc");

	return value;

	return value;

}

}