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Christophe Leroy 85ae11da85 powerpc/8xx: Fix pte_access_permitted() for PAGE_NONE 
[ Upstream commit 5d9cea8a552ee122e21fbd5a3c5d4eb85f648e06 ]

On 8xx, PAGE_NONE is handled by setting _PAGE_NA instead of clearing
_PAGE_USER.

But then pte_user() returns 1 also for PAGE_NONE.

As _PAGE_NA prevent reads, add a specific version of pte_read()
that returns 0 when _PAGE_NA is set instead of always returning 1.

Fixes: 351750331fc1 ("powerpc/mm: Introduce _PAGE_NA")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/57bcfbe578e43123f9ed73e040229b80f1ad56ec.1695659959.git.christophe.leroy@csgroup.eu
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-10-25 11:53:20 +02:00
..
alpha
alpha: remove __init annotation from exported page_is_ram()
2023-08-16 18:19:25 +02:00
arc
ARC: define ASM_NL and __ALIGN(_STR) outside #ifdef __ASSEMBLY__ guard
2023-07-27 08:37:18 +02:00
arm
ARM: dts: ti: omap: motorola-mapphone: Fix abe_clkctrl warning on boot
2023-10-10 21:46:39 +02:00
arm64
hw_breakpoint: fix single-stepping when using bpf_overflow_handler
2023-09-23 11:00:03 +02:00
c6x
dma-mapping: drop the dev argument to arch_sync_dma_for_*
2023-04-05 11:16:43 +02:00
csky
dma-mapping: drop the dev argument to arch_sync_dma_for_*
2023-04-05 11:16:43 +02:00
h8300
h8300: Fix build errors from do_exit() to make_task_dead() transition
2023-02-06 07:52:49 +01:00
hexagon
dma-mapping: drop the dev argument to arch_sync_dma_for_*
2023-04-05 11:16:43 +02:00
ia64
ia64/cpu: Switch to arch_cpu_finalize_init()
2023-08-08 19:56:34 +02:00
m68k
m68k: Fix invalid .section syntax
2023-09-23 10:59:38 +02:00
microblaze
dma-mapping: drop the dev argument to arch_sync_dma_for_*
2023-04-05 11:16:43 +02:00
mips
MIPS: Alchemy: only build mmc support helpers if au1xmmc is enabled
2023-10-10 21:46:38 +02:00
nds32
dma-mapping: drop the dev argument to arch_sync_dma_for_*
2023-04-05 11:16:43 +02:00
nios2
nios2: dts: Fix tse_mac "max-frame-size" property
2023-06-21 15:44:10 +02:00
openrisc
openrisc: Properly store r31 to pt_regs on unhandled exceptions
2023-05-17 11:35:53 +02:00
parisc
parisc: Restore __ldcw_align for PA-RISC 2.0 processors
2023-10-10 21:46:45 +02:00
powerpc
powerpc/8xx: Fix pte_access_permitted() for PAGE_NONE
2023-10-25 11:53:20 +02:00
riscv
riscv: Bump COMMAND_LINE_SIZE value to 1024
2023-04-05 11:16:39 +02:00
s390
s390/ipl: add missing secure/has_secure file to ipl type 'unknown'
2023-09-23 10:59:56 +02:00
sh
sh: boards: Fix CEU buffer size passed to dma_declare_coherent_memory()
2023-09-23 10:59:59 +02:00
sparc
sparc/cpu: Switch to arch_cpu_finalize_init()
2023-08-08 19:56:34 +02:00
um
um: Fix hostaudio build errors
2023-09-23 10:59:53 +02:00
unicore32
…
x86
x86/cpu: Fix AMD erratum #1485 on Zen4-based CPUs
2023-10-25 11:53:20 +02:00
xtensa
xtensa: boot/lib: fix function prototypes
2023-10-10 21:46:39 +02:00
.gitignore
…
Kconfig
init: Provide arch_cpu_finalize_init()
2023-08-08 19:56:33 +02:00