powerpc/mm/hash: Use the correct PPP mask when updating HPTE

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With commit e58e87adc8 "powerpc/mm: Update _PAGE_KERNEL_RO" we now
use all the three PPP bits. The top bit is now used to have a PPP value
of 0b110 which will be mapped to kernel read only. When updating the
hpte entry use right mask such that we update the 63rd bit (top 'P' bit)
too.

Prior to e58e87adc8 we didn't support KERNEL_RO at all (it was ==
KERNEL_RW), so this isn't a regression as such.

Fixes: e58e87adc8 ("powerpc/mm: Update _PAGE_KERNEL_RO")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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This commit is contained in:

Aneesh Kumar K.V 2016-06-08 19:55:55 +05:30 • committed by Michael Ellerman

parent a145abf12c

commit 8550e2fa34

2 changed files with 5 additions and 4 deletions

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1

arch/powerpc/include/asm/book3s/64/mmu-hash.h

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8

arch/powerpc/mm/hash_native_64.c

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