linux/arch/x86
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 - turn the stack canary into a normal __percpu variable on 32-bit which 2021-04-27 17:45:09 -07:00
configs module: remove EXPORT_UNUSED_SYMBOL* 2021-02-08 12:28:07 +01:00
crypto Objtool updates in this cycle were: 2021-04-28 12:53:24 -07:00
entry \n 2021-04-29 10:51:29 -07:00
events Perf events changes in this cycle were: 2021-04-28 13:03:44 -07:00
hyperv The x86 MM changes in this cycle were: 2021-04-29 11:41:43 -07:00
ia32 x86/ia32_signal: Propagate __user annotation properly 2020-12-11 19:44:31 +01:00
include The x86 MM changes in this cycle were: 2021-04-29 11:41:43 -07:00
kernel The x86 MM changes in this cycle were: 2021-04-29 11:41:43 -07:00
kvm Merge branch 'for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2021-04-27 18:47:42 -07:00
lib - turn the stack canary into a normal __percpu variable on 32-bit which 2021-04-27 17:45:09 -07:00
math-emu x86/fpu/math-emu: Fix function cast warning 2021-03-23 00:08:02 +01:00
mm The x86 MM changes in this cycle were: 2021-04-29 11:41:43 -07:00
net Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
pci x86: Fix various typos in comments 2021-03-18 15:31:53 +01:00
platform - turn the stack canary into a normal __percpu variable on 32-bit which 2021-04-27 17:45:09 -07:00
power - turn the stack canary into a normal __percpu variable on 32-bit which 2021-04-27 17:45:09 -07:00
purgatory crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
ras
realmode x86: Fix various typos in comments, take #2 2021-03-21 23:50:28 +01:00
tools x86/tools/insn_sanity: Convert to insn_decode() 2021-03-15 12:21:11 +01:00
um um: remove process stub VMA 2021-02-12 21:37:38 +01:00
video
xen The x86 MM changes in this cycle were: 2021-04-29 11:41:43 -07:00
.gitignore
Kbuild
Kconfig mm/memtest: add ARCH_USE_MEMTEST 2021-04-30 11:20:36 -07:00
Kconfig.assembler
Kconfig.cpu
Kconfig.debug x86, libnvdimm/test: Remove COPY_MC_TEST 2020-10-26 18:08:35 +01:00
Makefile Kbuild updates for v5.13 2021-04-29 14:24:39 -07:00
Makefile_32.cpu
Makefile.um