ARM: 8670/1: V7M: Do not corrupt vector table around v7m_invalidate_l1 call

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commit 6d80594936 upstream.

We save/restore registers around v7m_invalidate_l1 to address pointed
by r12, which is vector table, so the first eight entries are
overwritten with a garbage. We already have stack setup at that stage,
so use it to save/restore register.

Fixes: 6a8146f420 ("ARM: 8609/1: V7M: Add support for the Cortex-M7 processor")
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Vladimir Murzin 2017-04-24 10:40:48 +01:00 • committed by Greg Kroah-Hartman

parent 3304f5a1cb

commit 9f6cea2e3b

1 changed files with 2 additions and 2 deletions

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arch/arm/mm/proc-v7m.S

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