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authorFUJITA Tomonori <tomof@acm.org>2008-02-04 22:28:09 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 09:44:11 -0800
commit383af9525bb27f927511874f6306247ec13f1c28 (patch)
treec2a88846ba944954c87aaeb9087fc5ff0f0f9d57 /arch/x86/kernel/pci-calgary_64.c
parentfb3475e9b6bfa666107512fbd6006c26014f04b8 (diff)
iommu sg: powerpc: remove DMA 4GB boundary protection
Previously, during initialization of the IOMMU tables, the last entry at each 4GB boundary is marked as used since there are many adapters which cannot handle DMAing across any 4GB boundary. The IOMMU doesn't allocate a memory area spanning LLD's segment boundary anymore. The segment boundary of devices are set to 4GB by default. So we can remove 4GB boundary protection now. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/kernel/pci-calgary_64.c')
0 files changed, 0 insertions, 0 deletions