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s390x/async_pf: Check for apf extension and enable pfault

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S390 can also use async page faults, to enhance guest scheduling.
In case of live migration we want to disable the feature and let
all pending request finish.

Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Dominik Dingel 2013-09-05 13:54:39 +02:00 • committed by Christian Borntraeger
parent 3a553fc658
commit 819bd3091e
4 changed files with 94 additions and 0 deletions
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4
target-s390x/cpu.h
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@ -121,6 +121,10 @@ typedef struct CPUS390XState {
uint64_t cputm;
uint32_t todpr;
uint64_t pfault_token;
uint64_t pfault_compare;
uint64_t pfault_select;
CPU_COMMON
/* reset does memset(0) up to here */