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| author | alc <alc@FreeBSD.org> | 2004-10-16 22:32:50 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2004-10-16 22:32:50 +0000 |
| commit | b5407c1588372295fee424606446bd74d29e0764 (patch) | |
| tree | c48d17fd241eaaa1259dc5bd61650a3e226ccc2c /usr.bin | |
| parent | abf45cfc6feb385419331dff2c8c85c0efdf0017 (diff) | |
| download | FreeBSD-src-b5407c1588372295fee424606446bd74d29e0764.zip FreeBSD-src-b5407c1588372295fee424606446bd74d29e0764.tar.gz | |
When sf_buf_alloc() replaces a virtual-to-physical mapping, it needn't
invalidate the TLB(s) if the old mapping wasn't used by the CPU. With
network interfaces that implement checksum off-loading, the old mapping is
almost never used by the CPU, only by the device driver for setting up the
DMA operation.
Reviewed by: tegge@
Diffstat (limited to 'usr.bin')
0 files changed, 0 insertions, 0 deletions
