Commit 23d9a928 authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Russell King (Oracle)
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ARM: 9177/1: disable vmap'ed stacks on suspend-capable SMP configs 

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: default avatarArd Biesheuvel <ardb@kernel.org>
Signed-off-by: default avatarRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
parent 9cf72c35

arch/arm/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -128,7 +128,7 @@ 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.