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| author | Attilio Rao <attilio@FreeBSD.org> | 2011-05-13 20:58:48 +0000 |
|---|---|---|
| committer | Attilio Rao <attilio@FreeBSD.org> | 2011-05-13 20:58:48 +0000 |
| commit | b2aa562e7b75f4e54b37a6f272bf8b57d3553ece (patch) | |
| tree | f34ed698a1044eda15705db3b73ae0594bf0be71 /sys/sparc64/include | |
| parent | f89d6b3f06c9688c2326b2f172d3bafea07f5685 (diff) | |
| parent | 9a6e729a117787ebcdfccb4ec39febeb530d0742 (diff) | |
| download | src-b2aa562e7b75f4e54b37a6f272bf8b57d3553ece.tar.gz src-b2aa562e7b75f4e54b37a6f272bf8b57d3553ece.zip | |
MFC
Notes
Notes:
svn path=/projects/largeSMP/; revision=221858
Diffstat (limited to 'sys/sparc64/include')
| -rw-r--r-- | sys/sparc64/include/vmparam.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/sparc64/include/vmparam.h b/sys/sparc64/include/vmparam.h index 0638d0d78bf7..1b9e537ef17f 100644 --- a/sys/sparc64/include/vmparam.h +++ b/sys/sparc64/include/vmparam.h @@ -240,4 +240,11 @@ extern vm_offset_t vm_max_kernel_address; +/* + * Older sparc64 machines have a virtually indexed L1 data cache of 16KB. + * Consequently, mapping the same physical page multiple times may have + * caching disabled. + */ +#define ZERO_REGION_SIZE PAGE_SIZE + #endif /* !_MACHINE_VMPARAM_H_ */ |