From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Thu, 30 Jul 2015 17:41:28 +0100 Subject: [RFC] arm64: defconfig: enable 48-bit VA by default In-Reply-To: References: <55B0E1AD.60409@arm.com> <20150730101358.GA30796@e104818-lin.cambridge.arm.com> <20150730161210.GE407@e104818-lin.cambridge.arm.com> Message-ID: <20150730164128.GF407@e104818-lin.cambridge.arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, Jul 30, 2015 at 04:32:19PM +0000, Stuart Yoder wrote: > > -----Original Message----- > > From: Catalin Marinas [mailto:catalin.marinas at arm.com] > > > > For the time being, I would keep defconfig to 39-bit VA. If we start > > seeing systems with lots of RAM (over 256GB), we'll probably change the > > defconfig. > > Somone who follows the "Principles" doc "correctly" will hit an issue > with the linear memory map after 32GB of RAM, right? 2 GB in 1st alias, > 30 GB in 2nd alias, and rest at the 544 GB offset. Right (though I still don't like it but, well...). -- Catalin