From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@arm.linux.org.uk (Russell King - ARM Linux) Date: Mon, 10 Jun 2013 10:10:12 +0100 Subject: [PATCH] ARM: tegra: add basic SecureOS support In-Reply-To: References: <1370503687-17767-1-git-send-email-acourbot@nvidia.com> <20130606110240.GA3320@localhost.localdomain> <20130607173004.GA29344@localhost.localdomain> Message-ID: <20130610091012.GR18614@n2100.arm.linux.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Jun 10, 2013 at 04:47:22PM +0900, Alexandre Courbot wrote: > One could remove the naked attribute and put there registers into the > clobber list, but then the function will be inlined and we will have > to ensure the parameters end up in the right register (and having a > function that cannot be inlined is convenient in that respect). So as > far as I can tell, having the function naked and saving the registers > ourselves seems to be the most convenient way around this. If you use such a large clobber list, you risk the compiler barfing on you that it's run out of registers.