diff options
| -rw-r--r-- | arch/x86/include/asm/pmem.h | 5 | ||||
| -rw-r--r-- | arch/x86/include/asm/string_64.h | 1 | ||||
| -rw-r--r-- | drivers/acpi/nfit/core.c | 3 | ||||
| -rw-r--r-- | drivers/nvdimm/claim.c | 2 | ||||
| -rw-r--r-- | drivers/nvdimm/pmem.c | 2 | ||||
| -rw-r--r-- | include/linux/pmem.h | 23 | ||||
| -rw-r--r-- | include/linux/string.h | 8 |
7 files changed, 12 insertions, 32 deletions
diff --git a/arch/x86/include/asm/pmem.h b/arch/x86/include/asm/pmem.h index 529bb4a6487a..d5a22bac9988 100644 --- a/arch/x86/include/asm/pmem.h +++ b/arch/x86/include/asm/pmem.h @@ -44,11 +44,6 @@ static inline void arch_memcpy_to_pmem(void *dst, const void *src, size_t n) BUG(); } -static inline int arch_memcpy_from_pmem(void *dst, const void *src, size_t n) -{ - return memcpy_mcsafe(dst, src, n); -} - /** * arch_wb_cache_pmem - write back a cache range with CLWB * @vaddr: virtual start address diff --git a/arch/x86/include/asm/string_64.h b/arch/x86/include/asm/string_64.h index a164862d77e3..733bae07fb29 100644 --- a/arch/x86/include/asm/string_64.h +++ b/arch/x86/include/asm/string_64.h @@ -79,6 +79,7 @@ int strcmp(const char *cs, const char *ct); #define memset(s, c, n) __memset(s, c, n) #endif +#define __HAVE_ARCH_MEMCPY_MCSAFE 1 __must_check int memcpy_mcsafe_unrolled(void *dst, const void *src, size_t cnt); DECLARE_STATIC_KEY_FALSE(mcsafe_key); diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index c8ea9d698cd0..d0c07b2344e4 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -1783,8 +1783,7 @@ static int acpi_nfit_blk_single_io(struct nfit_blk *nfit_blk, mmio_flush_range((void __force *) mmio->addr.aperture + offset, c); - memcpy_from_pmem(iobuf + copied, - mmio->addr.aperture + offset, c); + memcpy(iobuf + copied, mmio->addr.aperture + offset, c); } copied += c; diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c index ca6d572c48fc..3a35e8028b9c 100644 --- a/drivers/nvdimm/claim.c +++ b/drivers/nvdimm/claim.c @@ -239,7 +239,7 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns, if (rw == READ) { if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align))) return -EIO; - return memcpy_from_pmem(buf, nsio->addr + offset, size); + return memcpy_mcsafe(buf, nsio->addr + offset, size); } if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align))) { diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 85b85633d674..3b3dab73d741 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -89,7 +89,7 @@ static int read_pmem(struct page *page, unsigned int off, int rc; void *mem = kmap_atomic(page); - rc = memcpy_from_pmem(mem + off, pmem_addr, len); + rc = memcpy_mcsafe(mem + off, pmem_addr, len); kunmap_atomic(mem); if (rc) return -EIO; diff --git a/include/linux/pmem.h b/include/linux/pmem.h index e856c2cb0fe8..71ecf3d46aac 100644 --- a/include/linux/pmem.h +++ b/include/linux/pmem.h @@ -31,12 +31,6 @@ static inline void arch_memcpy_to_pmem(void *dst, const void *src, size_t n) BUG(); } -static inline int arch_memcpy_from_pmem(void *dst, const void *src, size_t n) -{ - BUG(); - return -EFAULT; -} - static inline size_t arch_copy_from_iter_pmem(void *addr, size_t bytes, struct iov_iter *i) { @@ -65,23 +59,6 @@ static inline bool arch_has_pmem_api(void) return IS_ENABLED(CONFIG_ARCH_HAS_PMEM_API); } -/* - * memcpy_from_pmem - read from persistent memory with error handling - * @dst: destination buffer - * @src: source buffer - * @size: transfer length - * - * Returns 0 on success negative error code on failure. - */ -static inline int memcpy_from_pmem(void *dst, void const *src, size_t size) -{ - if (arch_has_pmem_api()) - return arch_memcpy_from_pmem(dst, src, size); - else - memcpy(dst, src, size); - return 0; -} - /** * memcpy_to_pmem - copy data to persistent memory * @dst: destination buffer for the copy diff --git a/include/linux/string.h b/include/linux/string.h index 26b6f6a66f83..9d6f189157e2 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -114,6 +114,14 @@ extern int memcmp(const void *,const void *,__kernel_size_t); #ifndef __HAVE_ARCH_MEMCHR extern void * memchr(const void *,int,__kernel_size_t); #endif +#ifndef __HAVE_ARCH_MEMCPY_MCSAFE +static inline __must_check int memcpy_mcsafe(void *dst, const void *src, + size_t cnt) +{ + memcpy(dst, src, cnt); + return 0; +} +#endif void *memchr_inv(const void *s, int c, size_t n); char *strreplace(char *s, char old, char new); |