Differential D22288

arm64: busdma_bounce: fix BUS_DMA_ALLOCNOW + BOUNCE for non-paged aligned requests
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Authored by kevans on Nov 9 2019, 4:12 AM.

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Reviewers

manu

Group Reviewers

arm64

Commits

rS354712: arm64: busdma_bounce: fix BUS_DMA_ALLOCNOW for non-paged aligned sizes

Summary

For any size that isn't page-aligned, we end up not pre-allocating enough for a single mapping because we truncate the size instead of rounding up to make sure the last bit is accounted for, leaving us one page shy of what we need.

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rS FreeBSD src repository - subversion

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Event Timeline

kevans created this revision.Nov 9 2019, 4:12 AM

Herald added a reviewer: manu. · View Herald TranscriptNov 9 2019, 4:12 AM

Herald added subscribers: emaste, andrew, imp. · View Herald Transcript

Harbormaster completed remote builds in B27412: Diff 64100.Nov 9 2019, 4:12 AM

kevans updated this revision to Diff 64137.Nov 10 2019, 3:02 AM

kevans retitled this revision from arm64: busdma_bounce: fix BUS_DMA_ALLOCNOW + BOUNCE for sub-page sizes to arm64: busdma_bounce: fix BUS_DMA_ALLOCNOW + BOUNCE for non-paged aligned requests.

kevans edited the summary of this revision. (Show Details)

Harbormaster completed remote builds in B27424: Diff 64137.Nov 10 2019, 3:03 AM

I add Scott long to reviewers

This revision was not accepted when it landed; it landed in state Needs Review.Nov 14 2019, 6:39 PM

Closed by commit rS354712: arm64: busdma_bounce: fix BUS_DMA_ALLOCNOW for non-paged aligned sizes (authored by kevans). · Explain Why

This revision was automatically updated to reflect the committed changes.

kevans added a commit: rS354712: arm64: busdma_bounce: fix BUS_DMA_ALLOCNOW for non-paged aligned sizes.