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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: Avi Kivity <avi@redhat.com>
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@ -565,10 +565,10 @@ static inline void ept_sync_individual_addr(u64 eptp, gpa_t gpa)
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static unsigned long vmcs_readl(unsigned long field)
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static unsigned long vmcs_readl(unsigned long field)
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{
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{
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unsigned long value;
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unsigned long value = 0;
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asm volatile (__ex(ASM_VMX_VMREAD_RDX_RAX)
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asm volatile (__ex(ASM_VMX_VMREAD_RDX_RAX)
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: "=a"(value) : "d"(field) : "cc");
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: "+a"(value) : "d"(field) : "cc");
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return value;
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return value;
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}
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}
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