From f7777e008cad17bf757ca256709070c07efd8283 Mon Sep 17 00:00:00 2001 From: Ram Pai Date: Mon, 19 Aug 2019 23:13:15 -0300 Subject: [PATCH] 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 Signed-off-by: Thiago Jung Bauermann Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190820021326.6884-6-bauerman@linux.ibm.com --- arch/powerpc/include/asm/ultravisor-api.h | 2 ++ arch/powerpc/include/asm/ultravisor.h | 10 ++++++++++ 2 files changed, 12 insertions(+) diff --git a/arch/powerpc/include/asm/ultravisor-api.h b/arch/powerpc/include/asm/ultravisor-api.h index 34c8711..0f5b2d7 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 d7aa97a..e5c8413 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 */ -- 2.7.4