arm64: mm: don't write garbage into TTBR1_EL1 register

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Stable backport commit 173358a491 ("arm64: kpti: Add ->enable callback
to remap swapper using nG mappings") of upstream commit f992b4dfd5 did
not survive the backporting process unscathed, and ends up writing garbage
into the TTBR1_EL1 register, rather than pointing it to the zero page to
disable translations. Fix that.

Cc: <stable@vger.kernel.org> #v4.14
Reported-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Ard Biesheuvel 2018-02-23 18:29:02 +00:00 • committed by Greg Kroah-Hartman

parent 485595768d

commit 35d75b7bfc

1 changed files with 1 additions and 1 deletions

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arch/arm64/mm/proc.S

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