Re: [PATCH v5 13/16] powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX

From: christophe leroy
Date: Sun Jun 16 2019 - 04:26:38 EST

Le 15/06/2019 Ã 13:23, Andreas Schwab a ÃcritÂ:
This breaks suspend (or resume) on the iBook G4. no_console_suspend
doesn't give any clues, the display just stays dark.

After a quick look at the suspend functions, I have the feeling that those functions only store and restore BATs 0 to 3.

Could you build your kernel with CONFIG_PPC_PTDUMP and see in file /sys/kernel/debug/powerpc/segment_registers how many IBATs registers are used.
If any of registers IBATs 4 to 7 are used, could you adjust CONFIG_ETEXT_SHIFT so that only IBATs 0 to 3 be used, and check if suspend/resume works when IBATs 4 to 7 are not used ?


L'absence de virus dans ce courrier Ãlectronique a Ãtà vÃrifiÃe par le logiciel antivirus Avast.