From: Ard Biesheuvel <ardb@kernel.org>
To: linux@armlinux.org.uk
Cc: linux-arm-kernel@lists.infradead.org, arnd@arndb.de,
linus.walleij@linaro.org, keescook@chromium.org,
Ard Biesheuvel <ardb@kernel.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Jon Hunter <jonathanh@nvidia.com>
Subject: [PATCH] ARM: disable vmap'ed stacks on suspend-capable SMP configs
Date: Wed, 5 Jan 2022 15:34:59 +0100 [thread overview]
Message-ID: <20220105143459.3365530-1-ardb@kernel.org> (raw)
There are several reports about the new vmap'ed stacks code breaking
suspend/resume on Exynos, Renesas and Tegra SMP platforms. While this is
under investigation, let's disable the vmap'ed stacks feature for the
time being for SMP configurations that have suspend/resume enabled.
[0] https://lore.kernel.org/linux-arm-kernel/20211122092816.2865873-8-ardb@kernel.org/
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/arm/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4817343b1d97..938f7c392cc7 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -129,7 +129,7 @@ config ARM
select RTC_LIB
select SYS_SUPPORTS_APM_EMULATION
select THREAD_INFO_IN_TASK
- select HAVE_ARCH_VMAP_STACK if MMU && (!LD_IS_LLD || LLD_VERSION >= 140000)
+ select HAVE_ARCH_VMAP_STACK if MMU && (!LD_IS_LLD || LLD_VERSION >= 140000) && !PM_SLEEP_SMP
select TRACE_IRQFLAGS_SUPPORT if !CPU_V7M
# Above selects are sorted alphabetically; please add new ones
# according to that. Thanks.
--
2.30.2
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reply other threads:[~2022-01-05 14:36 UTC|newest]
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