On Sun, Feb 12, 2023 at 08:13:20AM -0800, Guenter Roeck wrote: > On Sun, Jan 29, 2023 at 02:42:35PM +0200, Mike Rapoport wrote: > > From: "Mike Rapoport (IBM)" <rppt@xxxxxxxxxx> > > > > Every architecture that supports FLATMEM memory model defines its own > > version of pfn_valid() that essentially compares a pfn to max_mapnr. > > > > Use mips/powerpc version implemented as static inline as a generic > > implementation of pfn_valid() and drop its per-architecture definitions. > > > > With this patch in the tree, sh4 and sh4eb qemu emulations no longer boot. > Reverting this patch fixes the problem. This should be a better fix than a revert: diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c index 506784702430..bf1b54055316 100644 --- a/arch/sh/mm/init.c +++ b/arch/sh/mm/init.c @@ -301,6 +301,7 @@ void __init paging_init(void) */ max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT; min_low_pfn = __MEMORY_START >> PAGE_SHIFT; + set_max_mapnr(max_low_pfn - min_low_pfn); nodes_clear(node_online_map); > Guenter > > --- > # bad: [6ba8a227fd19d19779005fb66ad7562608e1df83] Add linux-next specific files for 20230210 > # good: [4ec5183ec48656cec489c49f989c508b68b518e3] Linux 6.2-rc7 > git bisect start 'HEAD' 'v6.2-rc7' > # good: [94613f0efc69ed41f9229ef5c294db3ec37145da] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git > git bisect good 94613f0efc69ed41f9229ef5c294db3ec37145da > # good: [19e62c715fe70dae4582c2874ed3e66715d09af6] Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git > git bisect good 19e62c715fe70dae4582c2874ed3e66715d09af6 > # good: [5d8b7ecef7f4a681b6e5538db59ff26c389c0ab6] Merge branch 'for-next' of https://gitlab.com/peda-linux/mux.git > git bisect good 5d8b7ecef7f4a681b6e5538db59ff26c389c0ab6 > # good: [c349bf6ec83903b20fe570c5609b9a864a64e09c] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode.git > git bisect good c349bf6ec83903b20fe570c5609b9a864a64e09c > # good: [5a06a9f17454df38f35672be522ff5eb9b4277d2] selftest: add testing unsharing and counting ksm zero page > git bisect good 5a06a9f17454df38f35672be522ff5eb9b4277d2 > # bad: [f5d115a7b06e5661ed5218ffa9a2644c4ff1c135] Merge branch 'mm-nonmm-unstable' into mm-everything > git bisect bad f5d115a7b06e5661ed5218ffa9a2644c4ff1c135 > # bad: [acb018d6ea0c055381fba7dddaef386ee28f8075] mm/vmalloc.c: allow vread() to read out vm_map_ram areas > git bisect bad acb018d6ea0c055381fba7dddaef386ee28f8075 > # good: [1a5d9782ac969dc6e61c6786500b5160603188ea] mm/mmap: remove __vma_adjust() > git bisect good 1a5d9782ac969dc6e61c6786500b5160603188ea > # good: [4b32363697de957dcc890b6245bec3f58903639a] arm: include asm-generic/memory_model.h from page.h rather than memory.h > git bisect good 4b32363697de957dcc890b6245bec3f58903639a > # bad: [328cf3fa6682ce6a4de6f8bb8009c833dc33f3c8] mm/migrate: convert isolate_movable_page() to use folios > git bisect bad 328cf3fa6682ce6a4de6f8bb8009c833dc33f3c8 > # bad: [b704c765b08cabe82adf76a4d1a74f3688eee410] mm/mempolicy: convert queue_pages_pmd() to queue_folios_pmd() > git bisect bad b704c765b08cabe82adf76a4d1a74f3688eee410 > # bad: [e5734c8b0edfd2a053a5c256189586a3b1e9f63d] mm, arch: add generic implementation of pfn_valid() for FLATMEM > git bisect bad e5734c8b0edfd2a053a5c256189586a3b1e9f63d > # good: [ad8aecea034c591b9754bc5908da9719853aa7fa] mips: drop definition of pfn_valid() for DISCONTIGMEM > git bisect good ad8aecea034c591b9754bc5908da9719853aa7fa > # first bad commit: [e5734c8b0edfd2a053a5c256189586a3b1e9f63d] mm, arch: add generic implementation of pfn_valid() for FLATMEM -- Sincerely yours, Mike.
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