KVM: s390: gaccess: Refactor access address range check

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Do not round down the first address to the page boundary, just translate
it normally, which gives the value we care about in the first place.
Given this, translating a single address is just the special case of
translating a range spanning a single page.

Make the output optional, so the function can be used to just check a
range.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-Id: <20211126164549.7046-3-scgl@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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Janis Schoetterl-Glausch 2021-11-26 17:45:48 +01:00 • committed by Janosch Frank

parent 416e7f0c9d

commit 7faa543df1

1 changed files with 69 additions and 53 deletions

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arch/s390/kvm/gaccess.c

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