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/include | |
| 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/include')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s_uvmem.h | 6 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/ultravisor-api.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/ultravisor.h | 5 |
3 files changed, 12 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s_uvmem.h b/arch/powerpc/include/asm/kvm_book3s_uvmem.h index 3033a9585b43..50204e228f16 100644 --- a/arch/powerpc/include/asm/kvm_book3s_uvmem.h +++ b/arch/powerpc/include/asm/kvm_book3s_uvmem.h @@ -19,6 +19,8 @@ unsigned long kvmppc_h_svm_page_out(struct kvm *kvm, unsigned long kvmppc_h_svm_init_start(struct kvm *kvm); unsigned long kvmppc_h_svm_init_done(struct kvm *kvm); int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn); +void kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free, + struct kvm *kvm); #else static inline int kvmppc_uvmem_init(void) { @@ -64,5 +66,9 @@ static inline int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn) { return -EFAULT; } + +static inline void +kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free, + struct kvm *kvm) { } #endif /* CONFIG_PPC_UV */ #endif /* __ASM_KVM_BOOK3S_UVMEM_H__ */ diff --git a/arch/powerpc/include/asm/ultravisor-api.h b/arch/powerpc/include/asm/ultravisor-api.h index e774274ab30e..4b0d044caa2a 100644 --- a/arch/powerpc/include/asm/ultravisor-api.h +++ b/arch/powerpc/include/asm/ultravisor-api.h @@ -27,6 +27,7 @@ #define UV_RETURN 0xF11C #define UV_ESM 0xF110 #define UV_REGISTER_MEM_SLOT 0xF120 +#define UV_UNREGISTER_MEM_SLOT 0xF124 #define UV_PAGE_IN 0xF128 #define UV_PAGE_OUT 0xF12C #define UV_SHARE_PAGE 0xF130 diff --git a/arch/powerpc/include/asm/ultravisor.h b/arch/powerpc/include/asm/ultravisor.h index 40cc8bace654..b8e59b7b4ac8 100644 --- a/arch/powerpc/include/asm/ultravisor.h +++ b/arch/powerpc/include/asm/ultravisor.h @@ -67,6 +67,11 @@ static inline int uv_register_mem_slot(u64 lpid, u64 start_gpa, u64 size, size, flags, slotid); } +static inline int uv_unregister_mem_slot(u64 lpid, u64 slotid) +{ + return ucall_norets(UV_UNREGISTER_MEM_SLOT, lpid, slotid); +} + static inline int uv_page_inval(u64 lpid, u64 gpa, u64 page_shift) { return ucall_norets(UV_PAGE_INVAL, lpid, gpa, page_shift); |