diff options
| author | Ram Pai <linuxram@us.ibm.com> | 2019-08-19 23:13:15 -0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-08-30 09:55:40 +1000 |
| commit | f7777e008cad17bf757ca256709070c07efd8283 (patch) | |
| tree | 3ab82df23c46dadad0e48aea702d6273ebe352fa /arch/powerpc/include | |
| parent | 6a9c930bd7751bf0630d8b9b73b07af5c6842da6 (diff) | |
| download | linux-f7777e008cad17bf757ca256709070c07efd8283.tar.bz2 | |
powerpc/pseries/svm: Add helpers for UV_SHARE_PAGE and UV_UNSHARE_PAGE
These functions are used when the guest wants to grant the hypervisor
access to certain pages.
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190820021326.6884-6-bauerman@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/ultravisor-api.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/ultravisor.h | 10 |
2 files changed, 12 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ultravisor-api.h b/arch/powerpc/include/asm/ultravisor-api.h index 34c8711334cb..0f5b2d718bfc 100644 --- a/arch/powerpc/include/asm/ultravisor-api.h +++ b/arch/powerpc/include/asm/ultravisor-api.h @@ -26,5 +26,7 @@ #define UV_WRITE_PATE 0xF104 #define UV_RETURN 0xF11C #define UV_ESM 0xF110 +#define UV_SHARE_PAGE 0xF130 +#define UV_UNSHARE_PAGE 0xF134 #endif /* _ASM_POWERPC_ULTRAVISOR_API_H */ diff --git a/arch/powerpc/include/asm/ultravisor.h b/arch/powerpc/include/asm/ultravisor.h index d7aa97aa7834..e5c8413de06f 100644 --- a/arch/powerpc/include/asm/ultravisor.h +++ b/arch/powerpc/include/asm/ultravisor.h @@ -31,4 +31,14 @@ static inline int uv_register_pate(u64 lpid, u64 dw0, u64 dw1) return ucall_norets(UV_WRITE_PATE, lpid, dw0, dw1); } +static inline int uv_share_page(u64 pfn, u64 npages) +{ + return ucall_norets(UV_SHARE_PAGE, pfn, npages); +} + +static inline int uv_unshare_page(u64 pfn, u64 npages) +{ + return ucall_norets(UV_UNSHARE_PAGE, pfn, npages); +} + #endif /* _ASM_POWERPC_ULTRAVISOR_H */ |