Messages in this thread | | | Date | Sat, 22 Aug 2020 23:25:41 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH v2] mm: Track page table modifications in __apply_to_page_range() |
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Hi! > > > The __apply_to_page_range() function is also used to change and/or > > > allocate page-table pages in the vmalloc area of the address space. > > > Make sure these changes get synchronized to other page-tables in the > > > system by calling arch_sync_kernel_mappings() when necessary. > > > > There's no description here of the user-visible effects of the bug. > > Please always provide this, especially when proposing a -stable > > backport. Take pity upon all the downstream kernel maintainers who are > > staring at this wondering whether they should risk adding it to their > > kernels. > > The impact appears limited to x86-32, where apply_to_page_range may miss > updating the PMD. That leads to explosions in drivers like
Is this alone supposed to fix my problems with graphics on Thinkpad X60? Let me try...
Best regards, Pavel
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