Messages in this thread | | | From | Arnd Bergmann <> | Date | Tue, 28 Jun 2022 23:50:37 +0200 | Subject | Re: [PATCH v2 3/3] arch/*/: remove CONFIG_VIRT_TO_BUS |
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On Tue, Jun 28, 2022 at 11:03 PM Michael Schmitz <schmitzmic@gmail.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
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