diff options
| author |   Bharata B Rao <bharata@linux.ibm.com> | 2019-11-25 08:36:28 +0530 |
|---|---|---|
| committer |   Paul Mackerras <paulus@ozlabs.org> | 2019-11-28 17:02:20 +1100 |
| commit | 008e359c76d85facb10d10fa21fd5bc8c3a4e5d6 (patch) | |
| tree | a855afea77b5d2c64102112966d3fdfd46f58f8e /arch/powerpc/include | |
| parent | KVM: PPC: Book3S HV: Shared pages support for secure guests (diff) | |
| download | linux-dev-008e359c76d85facb10d10fa21fd5bc8c3a4e5d6.tar.xz linux-dev-008e359c76d85facb10d10fa21fd5bc8c3a4e5d6.zip | |
KVM: PPC: Book3S HV: Radix changes for secure guest
- After the guest becomes secure, when we handle a page fault of a page
belonging to SVM in HV, send that page to UV via UV_PAGE_IN.
- Whenever a page is unmapped on the HV side, inform UV via UV_PAGE_INVAL.
- Ensure all those routines that walk the secondary page tables of
the guest don't do so in case of secure VM. For secure guest, the
active secondary page tables are in secure memory and the secondary
page tables in HV are freed when guest becomes secure.
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 95f389c2937b..3033a9585b43 100644 --- a/arch/powerpc/include/asm/kvm_book3s_uvmem.h +++ b/arch/powerpc/include/asm/kvm_book3s_uvmem.h @@ -18,6 +18,7 @@ unsigned long kvmppc_h_svm_page_out(struct kvm *kvm, unsigned long page_shift); 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); #else static inline int kvmppc_uvmem_init(void) { @@ -58,5 +59,10 @@ static inline unsigned long kvmppc_h_svm_init_done(struct kvm *kvm) { return H_UNSUPPORTED; } + +static inline int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn) +{ + return -EFAULT; +} #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 2483f15bd71a..e774274ab30e 100644 --- a/arch/powerpc/include/asm/ultravisor-api.h +++ b/arch/powerpc/include/asm/ultravisor-api.h @@ -32,5 +32,6 @@ #define UV_SHARE_PAGE 0xF130 #define UV_UNSHARE_PAGE 0xF134 #define UV_UNSHARE_ALL_PAGES 0xF140 +#define UV_PAGE_INVAL 0xF138 #endif /* _ASM_POWERPC_ULTRAVISOR_API_H */ diff --git a/arch/powerpc/include/asm/ultravisor.h b/arch/powerpc/include/asm/ultravisor.h index 79bb005e8ee9..40cc8bace654 100644 --- a/arch/powerpc/include/asm/ultravisor.h +++ b/arch/powerpc/include/asm/ultravisor.h @@ -67,4 +67,9 @@ static inline int uv_register_mem_slot(u64 lpid, u64 start_gpa, u64 size, size, flags, slotid); } +static inline int uv_page_inval(u64 lpid, u64 gpa, u64 page_shift) +{ + return ucall_norets(UV_PAGE_INVAL, lpid, gpa, page_shift); +} + #endif /* _ASM_POWERPC_ULTRAVISOR_H */ |