powerpc/booke64: Fix args to copy_and_flush

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Convert r4/r5, not r6, to a virtual address when calling
copy_and_flush.  Otherwise, r3 is already virtual, and copy_to_flush
tries to access r3+r6, PAGE_OFFSET gets added twice.

This isn't normally seen because on book3e we normally enter with
the kernel at zero and thus skip copy_to_flush -- but it will be
needed for kexec support.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
[scottwood: split patch and rewrote changelog]
Signed-off-by: Scott Wood <scottwood@freescale.com>

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Tiejun Chen 2015-10-06 22:48:14 -05:00 • committed by Scott Wood

parent 68d1014019

commit 835c031c98

1 changed files with 7 additions and 4 deletions

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arch/powerpc/kernel/head_64.S

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