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| author |   Joerg Roedel <jroedel@suse.de> | 2019-07-19 20:46:51 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2019-07-22 10:18:30 +0200 |
| commit | 8e998fc24de47c55b47a887f6c95ab91acd4a720 (patch) | |
| tree | 3ea783fa077c813487ae0760772c08e7c019ef0c /mm | |
| parent | x86/mm: Check for pfn instead of page in vmalloc_sync_one() (diff) | |
| download | linux-dev-8e998fc24de47c55b47a887f6c95ab91acd4a720.tar.xz linux-dev-8e998fc24de47c55b47a887f6c95ab91acd4a720.zip | |
x86/mm: Sync also unmappings in vmalloc_sync_all()
With huge-page ioremap areas the unmappings also need to be synced between
all page-tables. Otherwise it can cause data corruption when a region is
unmapped and later re-used.
Make the vmalloc_sync_one() function ready to sync unmappings and make sure
vmalloc_sync_all() iterates over all page-tables even when an unmapped PMD
is found.
Fixes: 5d72b4fba40ef ('x86, mm: support huge I/O mapping capability I/F')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lkml.kernel.org/r/20190719184652.11391-3-joro@8bytes.org
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions