From mboxrd@z Thu Jan 1 00:00:00 1970 From: marc.zyngier@arm.com (Marc Zyngier) Date: Wed, 1 Feb 2017 16:22:15 +0000 Subject: [PATCH 04/10] arm64: head.S: Enable EL1 (host) access to SPE when entered at EL2 In-Reply-To: <1485540470-11469-5-git-send-email-will.deacon@arm.com> References: <1485540470-11469-1-git-send-email-will.deacon@arm.com> <1485540470-11469-5-git-send-email-will.deacon@arm.com> Message-ID: <8b3f5174-cbe4-c6cd-3179-fa4d32868b46@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 27/01/17 18:07, Will Deacon wrote: > The SPE architecture requires each exception level to enable access > to the SPE controls for the exception level below it, since additional > context-switch logic may be required to handle the buffer safely. > > This patch allows EL1 (host) access to the SPE controls when entered at > EL2. > > Cc: Marc Zyngier > Signed-off-by: Will Deacon Definitely more readable than the initial version! ;-) Acked-by: Marc Zyngier M. -- Jazz is not dead. It just smells funny...