[Xen-devel] [PATCH v4 1/4] x86/asm/32: Make sync_core() handle missing CPUID on all 32-bit kernels

[Andy Lutomirski <luto@xxxxxxxxxx>]

We support various non-Intel CPUs that don't have the CPUID
instruction, so the M486 test was wrong.  For now, fix it with a big
hammer: handle missing CPUID on all 32-bit CPUs.

Reported-by: One Thousand Gnomes <gnomes@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
---
 arch/x86/include/asm/processor.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 984a7bf17f6a..64fbc937d586 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -595,7 +595,7 @@ static inline void sync_core(void)
 {
        int tmp;
 
-#ifdef CONFIG_M486
+#ifdef CONFIG_X86_32
        /*
         * Do a CPUID if available, otherwise do a jump.  The jump
         * can conveniently enough be the jump around CPUID.
-- 
2.9.3


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel