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powerpc/powernv: Don't clobber r9 in relative_toc()

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With OPAL, r8 and r9 will be used to pass the OPAL base and entry
for debugging purposes (those informations are also in the
device-tree). We don't want to clobber those registers that
early.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2011-09-19 17:44:51 +00:00
parent 781fb7a3e4
commit e550592e68
1 changed files with 3 additions and 3 deletions
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6
arch/powerpc/kernel/head_64.S
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@ -674,9 +674,9 @@ _GLOBAL(enable_64b_mode)
_GLOBAL(relative_toc)
mflr r0
bcl 20,31,$+4
0: mflr r9
ld r2,(p_toc - 0b)(r9)
add r2,r2,r9
0: mflr r11
ld r2,(p_toc - 0b)(r11)
add r2,r2,r11
mtlr r0
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