Messages in this thread | | | Date | Fri, 6 Oct 2017 16:35:51 +0100 | From | Catalin Marinas <> | Subject | Re: [PATCH 1/2] arm64: Ensure the instruction emulation is ready for userspace |
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On Fri, Oct 06, 2017 at 02:16:52PM +0100, Suzuki K. Poulose wrote: > We trap and emulate some instructions (e.g, mrs, deprecated instructions) > for the userspace. However the handlers for these are registered as > late_initcalls and the userspace could be up and running from the initramfs > by that time (with populate_rootfs, which is a rootfs_initcall()). This > could cause problems for the early applications ending up in failure > like : > > [ 11.152061] modprobe[93]: undefined instruction: pc=0000ffff8ca48ff4 > > This patch promotes the specific calls to core_initcalls, which are > guaranteed to be completed before we hit userspace. > > Cc: stable@vger.kernel.org > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Dave Martin <dave.martin@arm.com> > Cc: Matthias Brugger <mbrugger@suse.com> > Cc: James Morse <james.morse@arm.com> > Reported-by: Matwey V. Kornilov <matwey.kornilov@gmail.com> > Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Both patches queued for 4.14. Thanks.
-- Catalin
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