On Fri, 18 Aug 2023 09:13:21 +1000 Michael Ellerman <m...@ellerman.id.au> wrote:
> Try just removing the call to btext_unmap() entirely and see how far it goes? > > cheers Ok, I commented out btext_unmap() in MMU_init() and the freeze just happens before the "Linux version 6.5.0-rc6-PMacG4-dirty [...]"-line: [ 0.000000] printk: bootconsole [udbg0] enabled [ 0.000000] Total memory = 2048MB; using 4096kB for hash table [ 0.000000] mapin_ram:125 [ 0.000000] mmu_mapin_ram:169 0 30000000 1400000 2000000 [ 0.000000] __mmu_mapin_ram:146 0 1400000 [ 0.000000] __mmu_mapin_ram:155 1400000 [ 0.000000] __mmu_mapin_ram:146 1400000 30000000 [ 0.000000] __mmu_mapin_ram:155 20000000 [ 0.000000] __mapin_ram_chunk:107 20000000 30000000 [ 0.000000] __mapin_ram_chunk:117 [ 0.000000] mapin_ram:134 [ 0.000000] kasan_mmu_init:129 [ 0.000000] kasan_mmu_init:132 0 [ 0.000000] kasan_mmu_init:137 [ 0.000000] setup_kuap:23 [ 0.000000] setup_kuap:25 [ 0.000000] setup_kuap:30 [ 0.000000] setup_kuap:35 [ 0.000000] Activating Kernel Userspace Access Protection [ 0.000000] setup_kuap:40 [ 0.000000] Activating Kernel Userspace Execution Prevention I also tried a kernel without KUAP/KUEP getting this: [ 0.000000] printk: bootconsole [udbg0] enabled [ 0.000000] Total memory = 2048MB; using 4096kB for hash table [ 0.000000] mapin_ram:125 [ 0.000000] mmu_mapin_ram:169 0 30000000 1400000 2000000 [ 0.000000] __mmu_mapin_ram:146 0 1400000 [ 0.000000] __mmu_mapin_ram:155 1400000 [ 0.000000] __mmu_mapin_ram:146 1400000 30000000 [ 0.000000] __mmu_mapin_ram:155 20000000 [ 0.000000] __mapin_ram_chunk:107 20000000 30000000 [ 0.000000] __mapin_ram_chunk:117 [ 0.000000] mapin_ram:134 [ 0.000000] kasan_mmu_init:129 [ 0.000000] kasan_mmu_init:132 0 [ 0.000000] kasan_mmu_init:137 Here too the freeze just happens before the line "Linux version 6.5.0-rc6-PMacG4-dirty [...]" in dmesg. Attached is (warm boot) dmesg without KUAP/KUEP. Regards, Erhard
dmesg_65-rc6_g4_04
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