From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@armlinux.org.uk (Russell King - ARM Linux) Date: Sun, 4 Sep 2016 23:09:03 +0100 Subject: [PATCH] ARM: LPAE: initialize cachepolicy correctly In-Reply-To: <20160904053331.7264-1-stefan@agner.ch> References: <20160904053331.7264-1-stefan@agner.ch> Message-ID: <20160904220903.GN1041@n2100.armlinux.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Sat, Sep 03, 2016 at 10:33:31PM -0700, Stefan Agner wrote: > The cachepolicy variable gets initialized using a masked pmd > So far, the pmd has been masked with flags valid for the 2-page > table format. In the LPAE case, this lead to a wrong assumption > of what the initial cachepolicy has been used. Later a check > forces the cache policy to writealloc and prints the following > warning: > Forcing write-allocate cache policy for SMP > > This patch uses PMD_SECT_WBWA to mask all cache setting flags. > The define represents the complete mask of the cache relevant > flags for both page table formats. PMD_SECT_WBWA is just one possible combination, it's not a bit-mask. We need a new definition. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.