Messages in this thread | | | Subject | Re: [PATCH v5 13/16] powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX | From | christophe leroy <> | Date | Sun, 16 Jun 2019 10:20:29 +0200 |
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Le 15/06/2019 à 13:23, Andreas Schwab a écrit : > 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 ?
Thanks Christophe
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