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| author | eadler <eadler@FreeBSD.org> | 2014-02-04 03:36:42 +0000 |
|---|---|---|
| committer | eadler <eadler@FreeBSD.org> | 2014-02-04 03:36:42 +0000 |
| commit | ec294fd7f5fc5de11ed889d6c2d701f918d1ecfb (patch) | |
| tree | 7e76e370b9406b0383b17bd343084addb4ad6a25 /sys/amd64/vmm/intel/vtd.c | |
| parent | d374d7f398b846dc59d8a5ec3c7bfb318cf880af (diff) | |
| download | FreeBSD-src-ec294fd7f5fc5de11ed889d6c2d701f918d1ecfb.zip FreeBSD-src-ec294fd7f5fc5de11ed889d6c2d701f918d1ecfb.tar.gz | |
MFC r258779,r258780,r258787,r258822:
Fix undefined behavior: (1 << 31) is not defined as 1 is an int and this
shifts into the sign bit. Instead use (1U << 31) which gets the
expected result.
Similar to the (1 << 31) case it is not defined to do (2 << 30).
This fix is not ideal as it assumes a 32 bit int, but does fix the issue
for most cases.
A similar change was made in OpenBSD.
Diffstat (limited to 'sys/amd64/vmm/intel/vtd.c')
| -rw-r--r-- | sys/amd64/vmm/intel/vtd.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/amd64/vmm/intel/vtd.c b/sys/amd64/vmm/intel/vtd.c index 3d7b495..a8f85c3 100644 --- a/sys/amd64/vmm/intel/vtd.c +++ b/sys/amd64/vmm/intel/vtd.c @@ -74,11 +74,11 @@ struct vtdmap { #define VTD_GCR_WBF (1 << 27) #define VTD_GCR_SRTP (1 << 30) -#define VTD_GCR_TE (1 << 31) +#define VTD_GCR_TE (1U << 31) #define VTD_GSR_WBFS (1 << 27) #define VTD_GSR_RTPS (1 << 30) -#define VTD_GSR_TES (1 << 31) +#define VTD_GSR_TES (1U << 31) #define VTD_CCR_ICC (1UL << 63) /* invalidate context cache */ #define VTD_CCR_CIRG_GLOBAL (1UL << 61) /* global invalidation */ |
