Messages in this thread | | | Subject | Re: [PATCH 4.4 103/105] Revert "x86/mm/pat: Ensure cpa->pfn only contains page frame numbers" | From | Guenter Roeck <> | Date | Sat, 25 Aug 2018 19:30:53 -0700 |
| |
On 08/25/2018 08:07 AM, Greg Kroah-Hartman wrote: > On Sat, Aug 25, 2018 at 06:52:32AM -0700, Guenter Roeck wrote: >> Hi Roland, >> >> On 08/24/2018 01:04 PM, Roland Dreier wrote: >>>> Ok, so what patch should be reverted? I'm seeing other reports of >>>> problems all around this same area, but I can't figure out exactly what >>>> to do. >>> >>> Are any of those reports public? If so can you point me at them, I'm >>> curious if the symptoms match up. >>> >>> I don't think we want to revert anything. I think you should pull in >>> edc3b9129cec and at least the first three patches that Ben listed: >>> >>> 21cdb6b56843 x86/mm: Page align the '_end' symbol to avoid pfn conversion bugs >>> b61a76f8850d x86/efi: Map RAM into the identity page table for mixed mode >>> 753b11ef8e92 x86/efi: Setup separate EFI page tables in kexec paths >>> >>> the first patch takes a bit of massaging (mostly because some of it is >>> already touched by 02ff2769edbc, which keeps the changes from >>> edc3b9129cec, and so we can drop a good bit when applying). The other >>> three apply cleanly. >>> >>> I'm currently testing that and can send you the state of my tree in a bit. >>> >> >> Have you made any progress ? On my side I am still out of luck since I can not >> reproduce the problem. > > Perhaps just the patch that Andi posted to the stable list helps out > here? >
For reference:
https://www.spinics.net/lists/stable/msg253357.html
That would be the most straightforward and simple fix, so I would prefer to go with it if it works.
Guenter
| |