summaryrefslogtreecommitdiff
path: root/arch/x86/kvm/x86.c
diff options
context:
space:
mode:
authorPaolo Bonzini <pbonzini@redhat.com>2015-10-12 13:38:32 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2015-10-13 18:28:46 +0200
commit1d8007bdee074fdffcf3539492d8a151a1fb3436 (patch)
tree282870ab57659afefbddfc32e5e81e7812889c4b /arch/x86/kvm/x86.c
parentd2922422c48df93f3edff7d872ee4f3191fefb08 (diff)
KVM: x86: build kvm_userspace_memory_region in x86_set_memory_region
The next patch will make x86_set_memory_region fill the userspace_addr. Since the struct is not used untouched anymore, it makes sense to build it in x86_set_memory_region directly; it also simplifies the callers. Reported-by: Alexandre DERUMIER <aderumier@odiso.com> Cc: stable@vger.kernel.org Fixes: 9da0e4d5ac969909f6b435ce28ea28135a9cbd69 Reviewed-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
-rw-r--r--arch/x86/kvm/x86.c31
1 files changed, 13 insertions, 18 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 92511d4b7236..7bf8096f013d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7474,18 +7474,21 @@ void kvm_arch_sync_events(struct kvm *kvm)
kvm_free_pit(kvm);
}
-int __x86_set_memory_region(struct kvm *kvm,
- const struct kvm_userspace_memory_region *mem)
+int __x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size)
{
int i, r;
/* Called with kvm->slots_lock held. */
- BUG_ON(mem->slot >= KVM_MEM_SLOTS_NUM);
+ if (WARN_ON(id >= KVM_MEM_SLOTS_NUM))
+ return -EINVAL;
for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++) {
- struct kvm_userspace_memory_region m = *mem;
+ struct kvm_userspace_memory_region m;
- m.slot |= i << 16;
+ m.slot = id | (i << 16);
+ m.flags = 0;
+ m.guest_phys_addr = gpa;
+ m.memory_size = size;
r = __kvm_set_memory_region(kvm, &m);
if (r < 0)
return r;
@@ -7495,13 +7498,12 @@ int __x86_set_memory_region(struct kvm *kvm,
}
EXPORT_SYMBOL_GPL(__x86_set_memory_region);
-int x86_set_memory_region(struct kvm *kvm,
- const struct kvm_userspace_memory_region *mem)
+int x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size)
{
int r;
mutex_lock(&kvm->slots_lock);
- r = __x86_set_memory_region(kvm, mem);
+ r = __x86_set_memory_region(kvm, id, gpa, size);
mutex_unlock(&kvm->slots_lock);
return r;
@@ -7516,16 +7518,9 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
* unless the the memory map has changed due to process exit
* or fd copying.
*/
- struct kvm_userspace_memory_region mem;
- memset(&mem, 0, sizeof(mem));
- mem.slot = APIC_ACCESS_PAGE_PRIVATE_MEMSLOT;
- x86_set_memory_region(kvm, &mem);
-
- mem.slot = IDENTITY_PAGETABLE_PRIVATE_MEMSLOT;
- x86_set_memory_region(kvm, &mem);
-
- mem.slot = TSS_PRIVATE_MEMSLOT;
- x86_set_memory_region(kvm, &mem);
+ x86_set_memory_region(kvm, APIC_ACCESS_PAGE_PRIVATE_MEMSLOT, 0, 0);
+ x86_set_memory_region(kvm, IDENTITY_PAGETABLE_PRIVATE_MEMSLOT, 0, 0);
+ x86_set_memory_region(kvm, TSS_PRIVATE_MEMSLOT, 0, 0);
}
kvm_iommu_unmap_guest(kvm);
kfree(kvm->arch.vpic);