Messages in this thread | | | Date | Wed, 26 Oct 2022 09:51:20 -0700 | Subject | Re: [PATCH stable 4.19] arm64: errata: Remove AES hwcap for COMPAT tasks | From | Florian Fainelli <> |
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On 10/26/2022 9:49 AM, Greg Kroah-Hartman wrote: > On Thu, Oct 20, 2022 at 04:01:07PM -0700, Florian Fainelli wrote: >> From: James Morse <james.morse@arm.com> >> >> commit 44b3834b2eed595af07021b1c64e6f9bc396398b upstream >> >> Cortex-A57 and Cortex-A72 have an erratum where an interrupt that >> occurs between a pair of AES instructions in aarch32 mode may corrupt >> the ELR. The task will subsequently produce the wrong AES result. >> >> The AES instructions are part of the cryptographic extensions, which are >> optional. User-space software will detect the support for these >> instructions from the hwcaps. If the platform doesn't support these >> instructions a software implementation should be used. >> >> Remove the hwcap bits on affected parts to indicate user-space should >> not use the AES instructions. >> >> Acked-by: Ard Biesheuvel <ardb@kernel.org> >> Signed-off-by: James Morse <james.morse@arm.com> >> Link: https://lore.kernel.org/r/20220714161523.279570-3-james.morse@arm.com >> Signed-off-by: Will Deacon <will@kernel.org> >> [florian: resolved conflicts in arch/arm64/tools/cpucaps and cpu_errata.c] >> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> >> Change-Id: I651a0db2e9d2f304d210ae979ae586e7dcc9744d > > No need for Change-Id: in upstream patches :)
Meh, the perils of working with Gerrit in the same tree.. do you need me to resubmit or can you strip those when you apply the patches? -- Florian
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