[AMD Public Use] Hi David,
root@scbu-Chachani:~# cat /proc/mtrr reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back reg01: base=0x0ffe00000 ( 4094MB), size= 2MB, count=1: write-protect reg02: base=0x100000000 ( 4096MB), size= 16MB, count=1: write-protect reg03: base=0x0ffde0000 ( 4093MB), size= 128KB, count=1: write-protect reg04: base=0x0ff000000 ( 4080MB), size= 512KB, count=1: write-protect BRs, Leo -----Original Message----- From: David Hildenbrand <[email protected]> Sent: Tuesday, March 16, 2021 4:54 PM To: Liang, Liang (Leo) <[email protected]>; Mike Rapoport <[email protected]> Cc: Deucher, Alexander <[email protected]>; [email protected]; amd-gfx list <[email protected]>; Andrew Morton <[email protected]>; Huang, Ray <[email protected]>; Koenig, Christian <[email protected]>; Rafael J. Wysocki <[email protected]>; George Kennedy <[email protected]> Subject: Re: slow boot with 7fef431be9c9 ("mm/page_alloc: place pages to tail in __free_pages_core()") On 16.03.21 09:43, Liang, Liang (Leo) wrote: > [AMD Public Use] > > Hi David, > > Thanks for your explanation. We saw slow boot issue on our farm/QA's machines > and mine. All of machines are same SoC/board. I cannot spot anything really special in the logs -- it's just ordinary system ram -- except: [ 0.000027] MTRR fixed ranges enabled: [ 0.000028] 00000-9FFFF write-back [ 0.000029] A0000-BFFFF uncachable [ 0.000030] C0000-FFFFF write-through [ 0.000031] MTRR variable ranges enabled: [ 0.000032] 0 base 000000000000 mask FFFF80000000 write-back [ 0.000034] 1 base 0000FFE00000 mask FFFFFFE00000 write-protect [ 0.000035] 2 base 000100000000 mask FFFFFF000000 write-protect [ 0.000036] 3 base 0000FFDE0000 mask FFFFFFFE0000 write-protect [ 0.000038] 4 base 0000FF000000 mask FFFFFFF80000 write-protect [ 0.000039] 5 disabled [ 0.000039] 6 disabled [ 0.000040] 7 disabled Not sure if "2 base 000100000000" indicates something nasty. Not sure how to interpret the masks. Can you provide the output of "cat /proc/mtrr" ? -- Thanks, David / dhildenb _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
