linux/arch/arm64
Anshuman Khandual dce4456619 mm/memtest: add ARCH_USE_MEMTEST
early_memtest() does not get called from all architectures.  Hence
enabling CONFIG_MEMTEST and providing a valid memtest=[1..N] kernel
command line option might not trigger the memory pattern tests as would be
expected in normal circumstances.  This situation is misleading.

The change here prevents the above mentioned problem after introducing a
new config option ARCH_USE_MEMTEST that should be subscribed on platforms
that call early_memtest(), in order to enable the config CONFIG_MEMTEST.
Conversely CONFIG_MEMTEST cannot be enabled on platforms where it would
not be tested anyway.

Link: https://lkml.kernel.org/r/1617269193-22294-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com> (arm64)
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-30 11:20:36 -07:00
..
boot Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
configs ARM: platform support for Apple M1 2021-04-26 12:30:36 -07:00
crypto arm64 updates for 5.13: 2021-04-26 10:25:03 -07:00
include \n 2021-04-29 10:51:29 -07:00
kernel Devicetree updates for v5.13: 2021-04-28 15:50:24 -07:00
kvm CFI on arm64 series for v5.13-rc1 2021-04-27 10:16:46 -07:00
lib arm64: kasan: simplify and inline MTE functions 2021-02-26 09:41:03 -08:00
mm xen: branch for v5.13-rc1 2021-04-26 10:37:45 -07:00
net bpf: Rename BPF_XADD and prepare to encode other atomics in .imm 2021-01-14 18:34:29 -08:00
xen
Kbuild
Kconfig mm/memtest: add ARCH_USE_MEMTEST 2021-04-30 11:20:36 -07:00
Kconfig.debug arm64: remove TEXT_OFFSET randomization 2020-06-15 13:10:59 +01:00
Kconfig.platforms ARM: platform support for Apple M1 2021-04-26 12:30:36 -07:00
Makefile arm64: move --fix-cortex-a53-843419 linker test to Kconfig 2021-04-25 05:15:33 +09:00