s390/mm,gmap: implement gmap_translate()

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Implement gmap_translate() function which translates a guest absolute address
to a user space process address without establishing the guest page table
entries.

This is useful for kvm guest address translations where no memory access
is expected to happen soon (e.g. tprot exception handler).

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Heiko Carstens 2012-09-10 16:14:33 +02:00 • committed by Martin Schwidefsky

parent 4e4d035a92

commit c5034945ce

2 changed files with 87 additions and 22 deletions

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arch/s390/include/asm/pgtable.h

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107

arch/s390/mm/pgtable.c

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