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 PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sat, 26 Mar 2022 15:41:40 -0700 From: Linus Torvalds <torvalds@...ux-foundation.org> To: David Laight <David.Laight@...lab.com> Cc: Toke Høiland-Jørgensen <toke@...e.dk>, Halil Pasic <pasic@...ux.ibm.com>, Robin Murphy <robin.murphy@....com>, Maxime Bizon <mbizon@...ebox.fr>, Netdev <netdev@...r.kernel.org>, Kalle Valo <kvalo@...nel.org>, linux-wireless <linux-wireless@...r.kernel.org>, Oleksandr Natalenko <oleksandr@...alenko.name>, stable <stable@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>, iommu <iommu@...ts.linux-foundation.org>, Olha Cherevyk <olha.cherevyk@...il.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Christoph Hellwig <hch@....de>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [REGRESSION] Recent swiotlb DMA_FROM_DEVICE fixes break ath9k-based AP On Sat, Mar 26, 2022 at 3:38 PM David Laight <David.Laight@...lab.com> wrote: > > Is the idea of 'buffer ownership' even a good one? I do think it might be best to not think in those terms, but literally just in data movement terms. Because the "buffer ownership" mental model is clearly confused, when data transfer might be ongoing, but the CPU might need to just look at "what's going on right now" without actually taking any ownership of the buffer. Linus
Powered by blists - more mailing lists