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| author | Dominik Dingel <dingel@linux.vnet.ibm.com> | 2015-03-05 16:56:21 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-03-10 09:26:23 +0100 |
| commit | a310b283e357b54533c8168a92e8f1068efdc4d1 (patch) | |
| tree | c3d11fe40aa2e4822b19f31743c641a5a96231be /target-s390x/cpu.h | |
| parent | 5e5ced386a4ae74e406453dd5a7927936b1911aa (diff) | |
| download | qemu-a310b283e357b54533c8168a92e8f1068efdc4d1.tar.gz qemu-a310b283e357b54533c8168a92e8f1068efdc4d1.tar.bz2 qemu-a310b283e357b54533c8168a92e8f1068efdc4d1.zip | |
s390x/kvm: passing max memory size to accelerator
With "KVM: s390: Allow userspace to limit guest memory size" KVM is able to
do some optimizations based on the guest memory limit.
The guest memory limit is computed by the initial definition and with the notion of
hotplugged memory.
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Guenther Hutzl <hutzl@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Message-Id: <1425570981-40609-3-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'target-s390x/cpu.h')
| -rw-r--r-- | target-s390x/cpu.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 56c02931ad..143b631369 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -1029,6 +1029,7 @@ int kvm_s390_get_memslot_count(KVMState *s); void kvm_s390_clear_cmma_callback(void *opaque); int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state); void kvm_s390_reset_vcpu(S390CPU *cpu); +int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit); #else static inline void kvm_s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr, @@ -1066,8 +1067,21 @@ static inline int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state) static inline void kvm_s390_reset_vcpu(S390CPU *cpu) { } +static inline int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, + uint64_t *hw_limit) +{ + return 0; +} #endif +static inline int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit) +{ + if (kvm_enabled()) { + return kvm_s390_set_mem_limit(kvm_state, new_limit, hw_limit); + } + return 0; +} + static inline void cmma_reset(S390CPU *cpu) { if (kvm_enabled()) { |