Ard Biesheuvel 62cffa496a arm64/mm: Override PARange for !LPA2 and use it consistently ... When FEAT_LPA{,2} are not implemented, the ID_AA64MMFR0_EL1.PARange and TCR.IPS values corresponding with 52-bit physical addressing are reserved. Setting the TCR.IPS field to 0b110 (52-bit physical addressing) has side effects, such as how the TTBRn_ELx.BADDR fields are interpreted, and so it is important that disabling FEAT_LPA2 (by overriding the ID_AA64MMFR0.TGran fields) also presents a PARange field consistent with that. So limit the field to 48 bits unless LPA2 is enabled, and update existing references to use the override consistently. Fixes: 352b0395b5 ("arm64: Enable 52-bit virtual addressing for 4k and 16k granule configs") Cc: stable@vger.kernel.org Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20241212081841.2168124-10-ardb+git@google.com Signed-off-by: Will Deacon <will@kernel.org>		2024-12-19 17:23:52 +00:00
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.gitignore	arm64: gitignore: ignore relacheck	2024-02-22 21:57:52 +00:00
Makefile	Makefile: remove redundant tool coverage variables	2024-05-14 23:35:48 +09:00
idreg-override.c	arm64/mm: Override PARange for !LPA2 and use it consistently	2024-12-19 17:23:52 +00:00
kaslr_early.c	arm64: head: Move early kernel mapping routines into C code	2024-02-16 12:42:33 +00:00
map_kernel.c	arm64/mm: Override PARange for !LPA2 and use it consistently	2024-12-19 17:23:52 +00:00
map_range.c	arm64/mm: Change protval as 'pteval_t' in map_range()	2024-11-12 14:46:17 +00:00
patch-scs.c	arm64/scs: Deal with 64-bit relative offsets in FDE frames	2024-11-08 16:37:55 +00:00
pi.h	arm64: Enable LPA2 at boot if supported by the system	2024-02-16 12:42:40 +00:00
relacheck.c	arm64: kernel: Manage absolute relocations in code built under pi/	2024-02-16 12:42:28 +00:00
relocate.c	arm64: head: Move early kernel mapping routines into C code	2024-02-16 12:42:33 +00:00