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| author | Martin Schwidefsky | 2016-03-08 11:52:54 +0100 |
|---|---|---|
| committer | Christian Borntraeger | 2016-06-20 09:46:48 +0200 |
| commit | 414d3b07496604a4372466a6b474ca24291a143c (patch) | |
| tree | 2d3a2610ec945377f27fc2b72744ac8511e1709d /arch/s390/kvm/kvm-s390.c | |
| parent | kvm: vmx: hook preemption timer support (diff) | |
| download | kernel-qcow2-linux-414d3b07496604a4372466a6b474ca24291a143c.tar.gz kernel-qcow2-linux-414d3b07496604a4372466a6b474ca24291a143c.tar.xz kernel-qcow2-linux-414d3b07496604a4372466a6b474ca24291a143c.zip | |
s390/kvm: page table invalidation notifier
Pass an address range to the page table invalidation notifier
for KVM. This allows to notify changes that affect a larger
virtual memory area, e.g. for 1MB pages.
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 0dcf9b8fc12c..67f1b6b4c060 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -150,7 +150,8 @@ int kvm_arch_hardware_enable(void) return 0; } -static void kvm_gmap_notifier(struct gmap *gmap, unsigned long address); +static void kvm_gmap_notifier(struct gmap *gmap, unsigned long start, + unsigned long end); /* * This callback is executed during stop_machine(). All CPUs are therefore @@ -1976,16 +1977,23 @@ void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu) kvm_s390_vcpu_request(vcpu); } -static void kvm_gmap_notifier(struct gmap *gmap, unsigned long address) +static void kvm_gmap_notifier(struct gmap *gmap, unsigned long start, + unsigned long end) { - int i; struct kvm *kvm = gmap->private; struct kvm_vcpu *vcpu; + unsigned long prefix; + int i; + if (start >= 1UL << 31) + /* We are only interested in prefix pages */ + return; kvm_for_each_vcpu(i, vcpu, kvm) { /* match against both prefix pages */ - if (kvm_s390_get_prefix(vcpu) == (address & ~0x1000UL)) { - VCPU_EVENT(vcpu, 2, "gmap notifier for %lx", address); + prefix = kvm_s390_get_prefix(vcpu); + if (prefix <= end && start <= prefix + 2*PAGE_SIZE - 1) { + VCPU_EVENT(vcpu, 2, "gmap notifier for %lx-%lx", + start, end); kvm_s390_sync_request(KVM_REQ_MMU_RELOAD, vcpu); } } |