From: Arnd Bergmann <arnd@arndb.de>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Kristina Martsenko <kristina.martsenko@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] arm64: fix ARM64_USER_VA_BITS_52 builds
Date: Tue, 11 Dec 2018 15:08:10 +0100 [thread overview]
Message-ID: <20181211140832.567893-1-arnd@arndb.de> (raw)
In some randconfig builds, the new CONFIG_ARM64_USER_VA_BITS_52
triggered a build failure:
arch/arm64/mm/proc.S:287: Error: immediate out of range
As it turns out, we were incorrectly setting PGTABLE_LEVELS here,
lacking any other default value.
This fixes the calculation of CONFIG_PGTABLE_LEVELS to consider
all combinations again.
Fixes: 68d23da4373a ("arm64: Kconfig: Re-jig CONFIG options for 52-bit VA")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/arm64/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index df201d93697d..a0f3b921b6e6 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -278,7 +278,7 @@ config PGTABLE_LEVELS
int
default 2 if ARM64_16K_PAGES && ARM64_VA_BITS_36
default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
- default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
+ default 3 if ARM64_64K_PAGES && (ARM64_VA_BITS_48 || ARM64_USER_VA_BITS_52)
default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
default 3 if ARM64_16K_PAGES && ARM64_VA_BITS_47
default 4 if !ARM64_64K_PAGES && ARM64_VA_BITS_48
--
2.20.0
next reply other threads:[~2018-12-11 14:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-11 14:08 Arnd Bergmann [this message]
2018-12-11 14:18 ` Will Deacon
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