From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marek Szyprowski Date: Mon, 27 Oct 2014 12:13:05 +0000 Subject: Re: [PATCH v2 0/4] Low/high memory CMA reservation fixes Message-Id: <544E36D1.3090609@samsung.com> List-Id: References: <1414145922-26042-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> In-Reply-To: <1414145922-26042-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org Hello, On 2014-10-24 12:18, Laurent Pinchart wrote: > Hello, > > This patch set fixes an issue introduced by commits 95b0e655f914 ("ARM: mm: > don't limit default CMA region only to low memory") and f7426b983a6a ("mm: > cma: adjust address limit to avoid hitting low/high memory boundary") > resulting in reserved areas crossing the low/high memory boundary. > > Patches 1/4 and 2/4 fix sides issues, with the bulk of the work in patch 3/4. > Patch 4/4 then fixes a printk issue that got me puzzled wondering why memory > reported under the lowmem limit was actually highmem. > > This series fixes a v3.18-rc1 regression causing Renesas Koelsch boot > breakages when CMA is enabled. I've applied the whole series to my fixes-for-v3.18 branch. > Changes since v1: > > - Use the cma count field to detect non-activated reservations > - Remove the redundant limit adjustment > > Laurent Pinchart (4): > mm: cma: Don't crash on allocation if CMA area can't be activated > mm: cma: Always consider a 0 base address reservation as dynamic > mm: cma: Ensure that reservations never cross the low/high mem > boundary > mm: cma: Use %pa to print physical addresses > > mm/cma.c | 68 +++++++++++++++++++++++++++++++++++++++++----------------------- > 1 file changed, 44 insertions(+), 24 deletions(-) > Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland