Messages in this thread | | | Subject | Re: [PATCH] kvm/x86 : avoid shifting signed 32-bit value by 31 bits | From | "H. Peter Anvin" <> | Date | Mon, 15 Oct 2018 10:30:43 -0700 |
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On 10/15/18 10:23 AM, Paolo Bonzini wrote: > > Even for a value from a 32-bit register? That would be _BIT, which > doesn't exist. >
Just use _BITUL(). gcc is smart enough to know that that the resulting value is representable in 32 bits.
Or if you really care, submit a patch to create _BITU(), but I don't personally see much of a point.
-hpa
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