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| author | Jan Vorlicek <janvorli@microsoft.com> | 2019-03-15 20:32:48 +0100 |
|---|---|---|
| committer | Jan Kotas <jkotas@microsoft.com> | 2019-03-15 12:32:48 -0700 |
| commit | 66009329a187634dc432854cdd7c893d972156eb (patch) | |
| tree | dda734856cbf7fe6e891c7065937b82eb93a297a /src/pal/src | |
| parent | 855f6bef8e00c7aa45f2f14df4e3c18c12e8ab18 (diff) | |
| download | coreclr-66009329a187634dc432854cdd7c893d972156eb.tar.gz coreclr-66009329a187634dc432854cdd7c893d972156eb.tar.bz2 coreclr-66009329a187634dc432854cdd7c893d972156eb.zip | |
Fix GetFullAffinityMask for cpuCount==64 (#23276)
The function was incorrectly assuming that shifting 64 bit
constant 1 by 64 bits to the left gets result 0.
Diffstat (limited to 'src/pal/src')
| -rw-r--r-- | src/pal/src/numa/numa.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/pal/src/numa/numa.cpp b/src/pal/src/numa/numa.cpp index 92ec82f749..8793a09b85 100644 --- a/src/pal/src/numa/numa.cpp +++ b/src/pal/src/numa/numa.cpp @@ -166,7 +166,12 @@ the processors enabled. --*/ KAFFINITY GetFullAffinityMask(int cpuCount) { - return ((KAFFINITY)1 << (cpuCount)) - 1; + if (cpuCount < sizeof(KAFFINITY) * 8) + { + return ((KAFFINITY)1 << (cpuCount)) - 1; + } + + return ~(KAFFINITY)0; } /*++ |