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: Tue, 28 Jun 2022 23:50:37 +0200 From: Arnd Bergmann <arnd@...nel.org> To: Michael Schmitz <schmitzmic@...il.com> Cc: Geert Uytterhoeven <geert@...ux-m68k.org>, scsi <linux-scsi@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Arnd Bergmann <arnd@...db.de>, Jakub Kicinski <kuba@...nel.org>, Christoph Hellwig <hch@...radead.org>, Marek Szyprowski <m.szyprowski@...sung.com>, Robin Murphy <robin.murphy@....com>, Linux IOMMU <iommu@...ts.linux-foundation.org>, Khalid Aziz <khalid@...ehiking.org>, "Maciej W . Rozycki" <macro@...am.me.uk>, Matt Wang <wwentao@...are.com>, Miquel van Smoorenburg <mikevs@...all.net>, Mark Salyzyn <salyzyn@...roid.com>, linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>, Linux-Arch <linux-arch@...r.kernel.org>, alpha <linux-alpha@...r.kernel.org>, linux-m68k <linux-m68k@...ts.linux-m68k.org>, Parisc List <linux-parisc@...r.kernel.org>, Denis Efremov <efremov@...ux.com>, Michael Ellerman <mpe@...erman.id.au>, John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de> Subject: Re: [PATCH v2 3/3] arch/*/: remove CONFIG_VIRT_TO_BUS On Tue, Jun 28, 2022 at 11:03 PM Michael Schmitz <schmitzmic@...il.com> wrote: > On 28/06/22 19:03, Geert Uytterhoeven wrote: > >> The driver allocates bounce buffers using kmalloc if it hits an > >> unaligned data buffer - can such buffers still even happen these days? > > No idea. > Hmmm - I think I'll stick a WARN_ONCE() in there so we know whether this > code path is still being used. kmalloc() guarantees alignment to the next power-of-two size or KMALLOC_MIN_ALIGN, whichever is bigger. On m68k this means it is cacheline aligned. Arnd
Powered by blists - more mailing lists