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[S390] hibernate: make sure pfn_is_nosave handles lowcore pages

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pfn_is_nosave doesn't return the correct value for the second lowcore
page if lowcore protection is enabled. Make sure it always returns
the correct value.

While at it simplify the whole thing.
NSS special handling is done by the tprot check like it already works
for DCSS as well. So remove the extra code for NSS.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2009-09-22 22:58:50 +02:00
committed by Martin Schwidefsky
parent 3fd26a7793
commit 2573a57530
2 changed files with 9 additions and 17 deletions
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2
arch/s390/include/asm/lowcore.h
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@ -195,6 +195,8 @@ union save_area {
#define LC_ORDER 1
#endif
#define LC_PAGES (1UL << LC_ORDER)
struct _lowcore
{
#ifndef __s390x__