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[S390] s390: move machine flags to lowcore

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Currently the storage of the machine flags is a globally exported unsigned
long long variable. By moving the storage location into the lowcore struct we
allow assembler code to check machine_flags directly even without needing a
register. Addtionally the lowcore and therefore the machine flags too will be
in cache most of the time.

Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Christian Ehrhardt
2009-04-14 15:36:16 +02:00
committed by Martin Schwidefsky
parent b21597d026
commit 25097bf153
10 changed files with 56 additions and 36 deletions
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arch/s390/include/asm/kvm_host.h
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@@ -15,6 +15,7 @@
#define ASM_KVM_HOST_H
#include <linux/kvm_host.h>
#include <asm/debug.h>
#include <asm/cpuid.h>
#define KVM_MAX_VCPUS 64
#define KVM_MEMORY_SLOTS 32