Pull libnvdimm updates from Dan Williams: "libnvdimm updates for the latest ACPI and UEFI specifications. This pull request also includes new 'struct dax_operations' enabling to undo the abuse of copy_user_nocache() for copy operations to pmem. The dax work originally missed 4.12 to address concerns raised by Al. Summary: - Introduce the _flushcache() family of memory copy helpers and use them for persistent memory write operations on x86. The _flushcache() semantic indicates that the cache is either bypassed for the copy operation (movnt) or any lines dirtied by the copy operation are written back (clwb, clflushopt, or clflush). - Extend dax_operations with ->copy_from_iter() and ->flush() operations. These operations and other infrastructure updates allow all persistent memory specific dax functionality to be pushed into libnvdimm and the pmem driver directly. It also allows dax-specific sysfs attributes to be linked to a host device, for example: /sys/block/pmem0/dax/write_cache - Add support for the new NVDIMM platform/firmware mechanisms introduced in ACPI 6.2 and UEFI 2.7. This support includes the v1.2 namespace label format, extensions to the address-range-scrub command set, new error injection commands, and a new BTT (block-translation-table) layout. These updates support inter-OS and pre-OS compatibility. - Fix a longstanding memory corruption bug in nfit_test. - Make the pmem and nvdimm-region 'badblocks' sysfs files poll(2) capable. - Miscellaneous fixes and small updates across libnvdimm and the nfit driver. Acknowledgements that came after the branch was pushed: commit 6aa734a2f38e ("libnvdimm, region, pmem: fix 'badblocks' sysfs_get_dirent() reference lifetime") was reviewed by Toshi Kani <toshi.kani@hpe.com>" * tag 'libnvdimm-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (42 commits) libnvdimm, namespace: record 'lbasize' for pmem namespaces acpi/nfit: Issue Start ARS to retrieve existing records libnvdimm: New ACPI 6.2 DSM functions acpi, nfit: Show bus_dsm_mask in sysfs libnvdimm, acpi, nfit: Add bus level dsm mask for pass thru. acpi, nfit: Enable DSM pass thru for root functions. libnvdimm: passthru functions clear to send libnvdimm, btt: convert some info messages to warn/err libnvdimm, region, pmem: fix 'badblocks' sysfs_get_dirent() reference lifetime libnvdimm: fix the clear-error check in nsio_rw_bytes libnvdimm, btt: fix btt_rw_page not returning errors acpi, nfit: quiet invalid block-aperture-region warnings libnvdimm, btt: BTT updates for UEFI 2.7 format acpi, nfit: constify *_attribute_group libnvdimm, pmem: disable dax flushing when pmem is fronting a volatile region libnvdimm, pmem, dax: export a cache control attribute dax: convert to bitmask for flags dax: remove default copy_from_iter fallback libnvdimm, nfit: enable support for volatile ranges libnvdimm, pmem: fix persistence warning ...
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| @@ -105,7 +105,8 @@ struct nd_cmd_ars_cap { · 104 unmodified lines | ||
| 105 | 105 | __u32 status; |
| 106 | 106 | __u32 max_ars_out; |
| 107 | 107 | __u32 clear_err_unit; |
| 108 | − __u32 reserved; | |
| 108 | + __u16 flags; | |
| 109 | + __u16 reserved; | |
| 109 | 110 | } __packed; |
| 110 | 111 | |
| 111 | 112 | struct nd_cmd_ars_start { |
| @@ -144,6 +145,43 @@ struct nd_cmd_clear_error { · 32 unmodified lines | ||
| 144 | 145 | __u64 cleared; |
| 145 | 146 | } __packed; |
| 146 | 147 | |
| 148 | +struct nd_cmd_trans_spa { | |
| 149 | + __u64 spa; | |
| 150 | + __u32 status; | |
| 151 | + __u8 flags; | |
| 152 | + __u8 _reserved[3]; | |
| 153 | + __u64 trans_length; | |
| 154 | + __u32 num_nvdimms; | |
| 155 | + struct nd_nvdimm_device { | |
| 156 | + __u32 nfit_device_handle; | |
| 157 | + __u32 _reserved; | |
| 158 | + __u64 dpa; | |
| 159 | + } __packed devices[0]; | |
| 160 | + | |
| 161 | +} __packed; | |
| 162 | + | |
| 163 | +struct nd_cmd_ars_err_inj { | |
| 164 | + __u64 err_inj_spa_range_base; | |
| 165 | + __u64 err_inj_spa_range_length; | |
| 166 | + __u8 err_inj_options; | |
| 167 | + __u32 status; | |
| 168 | +} __packed; | |
| 169 | + | |
| 170 | +struct nd_cmd_ars_err_inj_clr { | |
| 171 | + __u64 err_inj_clr_spa_range_base; | |
| 172 | + __u64 err_inj_clr_spa_range_length; | |
| 173 | + __u32 status; | |
| 174 | +} __packed; | |
| 175 | + | |
| 176 | +struct nd_cmd_ars_err_inj_stat { | |
| 177 | + __u32 status; | |
| 178 | + __u32 inj_err_rec_count; | |
| 179 | + struct nd_error_stat_query_record { | |
| 180 | + __u64 err_inj_stat_spa_range_base; | |
| 181 | + __u64 err_inj_stat_spa_range_length; | |
| 182 | + } __packed record[0]; | |
| 183 | +} __packed; | |
| 184 | + | |
| 147 | 185 | enum { |
| 148 | 186 | ND_CMD_IMPLEMENTED = 0, |
| 149 | 187 | |
| @@ -169,6 +207,7 @@ enum { · 19 unmodified lines | ||
| 169 | 207 | enum { |
| 170 | 208 | ND_ARS_VOLATILE = 1, |
| 171 | 209 | ND_ARS_PERSISTENT = 2, |
| 210 | + ND_ARS_RETURN_PREV_DATA = 1 << 1, | |
| 172 | 211 | ND_CONFIG_LOCKED = 1, |
| 173 | 212 | }; |
| 174 | 213 | |
| @@ -179,6 +218,7 @@ static inline const char *nvdimm_bus_cmd_name(unsigned cmd) · 4 unmodified lines | ||
| 179 | 218 | [ND_CMD_ARS_START] = "ars_start", |
| 180 | 219 | [ND_CMD_ARS_STATUS] = "ars_status", |
| 181 | 220 | [ND_CMD_CLEAR_ERROR] = "clear_error", |
| 221 | + [ND_CMD_CALL] = "cmd_call", | |
| 182 | 222 | }; |
| 183 | 223 | |
| 184 | 224 | if (cmd < ARRAY_SIZE(names) && names[cmd]) |