On 3/1/21 10:02 AM, Anshuman Khandual wrote:
> 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.
> 
> Cc: Russell King <li...@armlinux.org.uk>
> Cc: Catalin Marinas <catalin.mari...@arm.com>
> Cc: Will Deacon <w...@kernel.org>
> Cc: Thomas Bogendoerfer <tsbog...@alpha.franken.de>
> Cc: Michael Ellerman <m...@ellerman.id.au>
> Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
> Cc: Paul Mackerras <pau...@samba.org>
> Cc: Thomas Gleixner <t...@linutronix.de>
> Cc: Ingo Molnar <mi...@redhat.com>
> Cc: Chris Zankel <ch...@zankel.net>
> Cc: Max Filippov <jcmvb...@gmail.com>
> Cc: linux-arm-ker...@lists.infradead.org
> Cc: linux-m...@vger.kernel.org
> Cc: linuxppc-...@lists.ozlabs.org
> Cc: linux-xte...@linux-xtensa.org
> Cc: linux...@kvack.org
> Cc: linux-kernel@vger.kernel.org
> Reviewed-by: Max Filippov <jcmvb...@gmail.com>
> Signed-off-by: Anshuman Khandual <anshuman.khand...@arm.com>
> ---
> This patch applies on v5.12-rc1 and has been tested on arm64 platform.
> But it has been just build tested on all other platforms.
> 
> Changes in V2:
> 
> - Added ARCH_USE_MEMTEST in the sorted alphabetical order on platforms

Gentle ping, any updates or objections ?

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