diff options
| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-04 19:23:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-04 19:23:13 -0700 |
| commit | d09a8e6f2c0a4fe3dcb85d21ea1069aa83152fe1 (patch) | |
| tree | f1674b8373a4a47e20a5ca576b12ccbe6afe535d /drivers | |
| parent | Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (diff) | |
| parent | x86/asm/memcpy_mcsafe: Define copy_to_iter_mcsafe() (diff) | |
| download | linux-dev-d09a8e6f2c0a4fe3dcb85d21ea1069aa83152fe1.tar.xz linux-dev-d09a8e6f2c0a4fe3dcb85d21ea1069aa83152fe1.zip | |
Merge branch 'x86-dax-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 dax updates from Ingo Molnar:
"This contains x86 memcpy_mcsafe() fault handling improvements the
nvdimm tree would like to make more use of"
* 'x86-dax-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/asm/memcpy_mcsafe: Define copy_to_iter_mcsafe()
x86/asm/memcpy_mcsafe: Add write-protection-fault handling
x86/asm/memcpy_mcsafe: Return bytes remaining
x86/asm/memcpy_mcsafe: Add labels for __memcpy_mcsafe() write fault handling
x86/asm/memcpy_mcsafe: Remove loop unrolling
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvdimm/claim.c | 3 | ||||
| -rw-r--r-- | drivers/nvdimm/pmem.c | 6 |
2 files changed, 5 insertions, 4 deletions
diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c index 30852270484f..2e96b34bc936 100644 --- a/drivers/nvdimm/claim.c +++ b/drivers/nvdimm/claim.c @@ -276,7 +276,8 @@ 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_mcsafe(buf, nsio->addr + offset, size); + if (memcpy_mcsafe(buf, nsio->addr + offset, size) != 0) + return -EIO; } if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align))) { diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 9d714926ecf5..e023d6aa22b5 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -101,15 +101,15 @@ static blk_status_t read_pmem(struct page *page, unsigned int off, void *pmem_addr, unsigned int len) { unsigned int chunk; - int rc; + unsigned long rem; void *mem; while (len) { mem = kmap_atomic(page); chunk = min_t(unsigned int, len, PAGE_SIZE); - rc = memcpy_mcsafe(mem + off, pmem_addr, chunk); + rem = memcpy_mcsafe(mem + off, pmem_addr, chunk); kunmap_atomic(mem); - if (rc) + if (rem) return BLK_STS_IOERR; len -= chunk; off = 0; |