Date: Tue, 4 Feb 2003 08:30:27 -0800 (PST) From: Hartmut Brandt <harti@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/alpha/alpha busdma_machdep.c src/sys/powerpc/powerpc busdma_machdep.c src/sys/ia64/ia64 busdma_machdep.c src/sys/i386/i386 busdma_machdep.c src/sys/sparc64/sparc64 bus_machdep.c Message-ID: <200302041630.h14GURSe076649@repoman.freebsd.org>
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harti 2003/02/04 08:30:27 PST
Modified files:
sys/alpha/alpha busdma_machdep.c
sys/powerpc/powerpc busdma_machdep.c
sys/ia64/ia64 busdma_machdep.c
sys/i386/i386 busdma_machdep.c
sys/sparc64/sparc64 bus_machdep.c
Log:
Fix a problem in bus_dmamap_load_{mbuf,uio} when the first mbuf or the first
uio segment is empty. In this case no dma segment is create by
bus_dmamap_load_buffer, but the calling routine clears the first flag.
Under certain combinations of addresses of the first and second mbuf/uio
buffer this leads to corrupted DMA segment descriptors. This was already
fixed by tmm in sparc64/sparc64/iommu.c.
PR: kern/47733
Reviewed by: sam
Approved by: jake (mentor)
Revision Changes Path
1.28 +16 -11 src/sys/alpha/alpha/busdma_machdep.c
1.32 +16 -11 src/sys/i386/i386/busdma_machdep.c
1.14 +16 -11 src/sys/ia64/ia64/busdma_machdep.c
1.7 +12 -8 src/sys/powerpc/powerpc/busdma_machdep.c
1.19 +12 -8 src/sys/sparc64/sparc64/bus_machdep.c
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