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arm64: mm: Remove vabits_user

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Previous patches have enabled 52-bit kernel + user VAs and there is no
longer any scenario where user VA != kernel VA size.

This patch removes the, now redundant, vabits_user variable and replaces
usage with vabits_actual where appropriate.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Steve Capper <steve.capper@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Steve Capper
2019-08-07 16:55:23 +01:00
committed by Will Deacon
parent b6d00d47e8
commit 2c624fe687
7 changed files with 5 additions and 16 deletions
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7
arch/arm64/kernel/head.S
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@@ -316,11 +316,6 @@ __create_page_tables:
#endif
mov x5, #VA_BITS_MIN
1:
adr_l x6, vabits_user
str x5, [x6]
dmb sy
dc ivac, x6 // Invalidate potentially stale cache line
adr_l x6, vabits_actual
str x5, [x6]
dmb sy
@@ -795,7 +790,7 @@ ENDPROC(__enable_mmu)
ENTRY(__cpu_secondary_check52bitva)
#ifdef CONFIG_ARM64_VA_BITS_52
ldr_l x0, vabits_user
ldr_l x0, vabits_actual
cmp x0, #52
b.ne 2f