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[S390] Use gmap translation for accessing guest memory

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This patch removes kvm-s390 internal assumption of a linear mapping
of guest address space to user space. Previously, guest memory was
translated to user addresses using a fixed offset (gmsor). The new
code uses gmap_fault to resolve guest addresses.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Carsten Otte
2011-07-24 10:48:22 +02:00
committed by Martin Schwidefsky
parent 598841ca99
commit 092670cd90
6 changed files with 197 additions and 113 deletions
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4
arch/s390/kvm/kvm-s390.c
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@@ -549,7 +549,7 @@ rerun_vcpu:
return rc;
}
static int __guestcopy(struct kvm_vcpu *vcpu, u64 guestdest, const void *from,
static int __guestcopy(struct kvm_vcpu *vcpu, u64 guestdest, void *from,
unsigned long n, int prefix)
{
if (prefix)
@@ -566,7 +566,7 @@ static int __guestcopy(struct kvm_vcpu *vcpu, u64 guestdest, const void *from,
*/
int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr)
{
const unsigned char archmode = 1;
unsigned char archmode = 1;
int prefix;
if (addr == KVM_S390_STORE_STATUS_NOADDR) {