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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2013-03-05 13:14:41 +0100 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2013-03-07 16:21:20 -0300 |
| commit | 9e0fdb4145205bea95c2888a195c3ead2652f120 (patch) | |
| tree | 82f07f99aeb80157bc1e7b4131dd4ad1ba37dcf1 /arch/s390/include | |
| parent | 744b37fb5a63d45e92e590967bae82d8ac62e950 (diff) | |
| download | blackbird-op-linux-9e0fdb4145205bea95c2888a195c3ead2652f120.tar.gz blackbird-op-linux-9e0fdb4145205bea95c2888a195c3ead2652f120.zip | |
s390/mm,gmap: implement gmap_translate()
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>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 4a2930844d43..75b8750a16ff 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -759,6 +759,8 @@ void gmap_disable(struct gmap *gmap); int gmap_map_segment(struct gmap *gmap, unsigned long from, unsigned long to, unsigned long length); int gmap_unmap_segment(struct gmap *gmap, unsigned long to, unsigned long len); +unsigned long __gmap_translate(unsigned long address, struct gmap *); +unsigned long gmap_translate(unsigned long address, struct gmap *); unsigned long __gmap_fault(unsigned long address, struct gmap *); unsigned long gmap_fault(unsigned long address, struct gmap *); void gmap_discard(unsigned long from, unsigned long to, struct gmap *); |
