diff options
| author | Bharata B Rao <bharata@linux.ibm.com> | 2019-11-25 08:36:29 +0530 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2019-11-28 17:02:26 +1100 |
| commit | c32622575dd0ecb6fd0b41e3a451bd58152971ba (patch) | |
| tree | 04a7a119504357baa2d9d5e0409b6bf5789fdd91 /arch/powerpc/kvm/book3s_hv.c | |
| parent | 008e359c76d85facb10d10fa21fd5bc8c3a4e5d6 (diff) | |
KVM: PPC: Book3S HV: Handle memory plug/unplug to secure VM
Register the new memslot with UV during plug and unregister
the memslot during unplug. In addition, release all the
device pages during unplug.
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 03d56aeec714..a8e815648b0a 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -74,6 +74,7 @@ #include <asm/hw_breakpoint.h> #include <asm/kvm_host.h> #include <asm/kvm_book3s_uvmem.h> +#include <asm/ultravisor.h> #include "book3s.h" @@ -4515,6 +4516,29 @@ static void kvmppc_core_commit_memory_region_hv(struct kvm *kvm, if (change == KVM_MR_FLAGS_ONLY && kvm_is_radix(kvm) && ((new->flags ^ old->flags) & KVM_MEM_LOG_DIRTY_PAGES)) kvmppc_radix_flush_memslot(kvm, old); + /* + * If UV hasn't yet called H_SVM_INIT_START, don't register memslots. + */ + if (!kvm->arch.secure_guest) + return; + + switch (change) { + case KVM_MR_CREATE: + if (kvmppc_uvmem_slot_init(kvm, new)) + return; + uv_register_mem_slot(kvm->arch.lpid, + new->base_gfn << PAGE_SHIFT, + new->npages * PAGE_SIZE, + 0, new->id); + break; + case KVM_MR_DELETE: + uv_unregister_mem_slot(kvm->arch.lpid, old->id); + kvmppc_uvmem_slot_free(kvm, old); + break; + default: + /* TODO: Handle KVM_MR_MOVE */ + break; + } } /* |