Date: Tue, 3 Dec 2019 19:00:12 +0000 (UTC) From: Kyle Evans <kevans@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r355354 - in stable: 11/sys/arm64/arm64 12/sys/arm64/arm64 Message-ID: <201912031900.xB3J0CIF067980@repo.freebsd.org>
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Author: kevans Date: Tue Dec 3 19:00:12 2019 New Revision: 355354 URL: https://svnweb.freebsd.org/changeset/base/355354 Log: MFC r354712: arm64: fix BUS_DMA_ALLOCNOW for non-paged aligned sizes 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 to fulfill a request. Modified: stable/11/sys/arm64/arm64/busdma_bounce.c Directory Properties: stable/11/ (props changed) Changes in other areas also in this revision: Modified: stable/12/sys/arm64/arm64/busdma_bounce.c Directory Properties: stable/12/ (props changed) Modified: stable/11/sys/arm64/arm64/busdma_bounce.c ============================================================================== --- stable/11/sys/arm64/arm64/busdma_bounce.c Tue Dec 3 18:58:45 2019 (r355353) +++ stable/11/sys/arm64/arm64/busdma_bounce.c Tue Dec 3 19:00:12 2019 (r355354) @@ -214,7 +214,7 @@ bounce_bus_dma_tag_create(bus_dma_tag_t parent, bus_si if (ptoa(bz->total_bpages) < maxsize) { int pages; - pages = atop(maxsize) - bz->total_bpages; + pages = atop(round_page(maxsize)) - bz->total_bpages; /* Add pages to our bounce pool */ if (alloc_bounce_pages(newtag, pages) < pages)
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