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powerpc/8xx: Allow setting DATA alignment even with STRICT_KERNEL_RWX

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It is now possible to not pin kernel text with a 8Mbytes TLB, so
the alignment for STRICT_KERNEL_RWX can be relaxed.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/d0d8b05012b392dd166cfd911f14ba2741ce7e1e.1724173828.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2024-08-20 19:23:49 +02:00 committed by Michael Ellerman
parent 1a736d98c8
commit bcf77a70c4
1 changed files with 5 additions and 5 deletions
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10
arch/powerpc/Kconfig
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@ -853,8 +853,8 @@ config DATA_SHIFT_BOOL
bool "Set custom data alignment"
depends on ADVANCED_OPTIONS
depends on STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE
depends on PPC_BOOK3S_32 || (PPC_8xx && !PIN_TLB_DATA && !STRICT_KERNEL_RWX) || \
PPC_85xx
depends on (PPC_8xx && !PIN_TLB_DATA && (!STRICT_KERNEL_RWX || !PIN_TLB_TEXT)) || \
PPC_BOOK3S_32 || PPC_85xx
help
This option allows you to set the kernel data alignment. When
RAM is mapped by blocks, the alignment needs to fit the size and
@ -870,9 +870,9 @@ config DATA_SHIFT
range 20 24 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_85xx
default 22 if STRICT_KERNEL_RWX && PPC_BOOK3S_32
default 18 if (DEBUG_PAGEALLOC || KFENCE) && PPC_BOOK3S_32
default 23 if STRICT_KERNEL_RWX && PPC_8xx
default 23 if (DEBUG_PAGEALLOC || KFENCE) && PPC_8xx && PIN_TLB_DATA
default 19 if (DEBUG_PAGEALLOC || KFENCE) && PPC_8xx
default 23 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_8xx && \
(PIN_TLB_DATA || PIN_TLB_TEXT)
default 19 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_8xx
default 24 if STRICT_KERNEL_RWX && PPC_85xx
default PAGE_SHIFT
help