chmc: Mark %ver register inline asm with __volatile__
Otherwise GCC can try to do the register read before the guarding test on us3mc_platform() being true. If that happens we can take an exception, because %ver register reads are not allowed in privileged more on hypervisor platforms. Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
82960b8543
commit
615c9136b3
|
@ -831,7 +831,7 @@ static int __init us3mc_init(void)
|
|||
if (!us3mc_platform())
|
||||
return -ENODEV;
|
||||
|
||||
__asm__ ("rdpr %%ver, %0" : "=r" (ver));
|
||||
__asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
|
||||
if ((ver >> 32UL) == __JALAPENO_ID ||
|
||||
(ver >> 32UL) == __SERRANO_ID) {
|
||||
mc_type = MC_TYPE_JBUS;
|
||||
|
|
Loading…
Reference in a new issue