arm64: fix access to preempt_count from assembly code

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preempt_count is defined as an int. Oddly enough, we access it
as a 64bit value. Things become interesting when running a BE
kernel, and looking at the current CPU number, which is stored
as an int next to preempt_count. Like in a per-cpu interrupt
handler, for example...

Using a 32bit access fixes the issue for good.

Cc: Matthew Leach <matthew.leach@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

...

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Marc Zyngier 2013-11-04 20:14:58 +00:00 • committed by Catalin Marinas

parent 7ade67b598

commit 717321fcb5

1 changed files with 11 additions and 11 deletions

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arch/arm64/kernel/entry.S

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