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KVM: s390: streamline memslot handling

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This patch relocates the variables kvm-s390 uses to track guest mem addr/size.
As discussed dropping the variables at struct kvm_arch level allows to use the
common vcpu->request based mechanism to reload guest memory if e.g. changes
via set_memory_region.

The kick mechanism introduced in this series is used to ensure running vcpus
leave guest state to catch the update.

Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Christian Ehrhardt
2009-05-25 13:40:51 +02:00
committed by Avi Kivity
parent b1d16c495d
commit 628eb9b8a8
6 changed files with 62 additions and 54 deletions
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4
arch/s390/kvm/sigp.c
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@@ -189,9 +189,9 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
/* make sure that the new value is valid memory */
address = address & 0x7fffe000u;
if ((copy_from_guest(vcpu, &tmp,
(u64) (address + vcpu->kvm->arch.guest_origin) , 1)) ||
(u64) (address + vcpu->arch.sie_block->gmsor) , 1)) ||
(copy_from_guest(vcpu, &tmp, (u64) (address +
vcpu->kvm->arch.guest_origin + PAGE_SIZE), 1))) {
vcpu->arch.sie_block->gmsor + PAGE_SIZE), 1))) {
*reg |= SIGP_STAT_INVALID_PARAMETER;
return 1; /* invalid parameter */
}