| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 09 Sep 2010 10:10:00 -0700 From: David Daney <ddaney@...iumnetworks.com> To: Kevin Cernekee <cernekee@...il.com> CC: Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 3/3] MIPS: DMA: Add plat_extra_sync_for_cpu() On 09/08/2010 04:02 PM, Kevin Cernekee wrote: > On noncoherent processors with a readahead cache, an extra platform- > specific invalidation is required during the dma_sync_*_for_cpu() > operations to keep drivers from seeing stale prefetched data. > > Signed-off-by: Kevin Cernekee<cernekee@...il.com> > --- > .../include/asm/mach-cavium-octeon/dma-coherence.h | 13 +++++++++++++ > arch/mips/include/asm/mach-generic/dma-coherence.h | 13 +++++++++++++ > arch/mips/include/asm/mach-ip27/dma-coherence.h | 13 +++++++++++++ > arch/mips/include/asm/mach-ip32/dma-coherence.h | 13 +++++++++++++ > arch/mips/include/asm/mach-jazz/dma-coherence.h | 13 +++++++++++++ > .../mips/include/asm/mach-loongson/dma-coherence.h | 13 +++++++++++++ > arch/mips/include/asm/mach-powertv/dma-coherence.h | 13 +++++++++++++ > arch/mips/mm/dma-default.c | 3 +++ > 8 files changed, 94 insertions(+), 0 deletions(-) > [...] But as far as I can see, none of your plat_extra_sync_for_cpu() do anything. Perhaps adding this hook should be deferred until there is actually a user. David Daney -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists