Re: [PATCHv2 05/12] arm64: Don't trap host pointer auth use to EL2

2018-02-12 Thread Mark Rutland
On Tue, Feb 06, 2018 at 01:39:06PM +0100, Christoffer Dall wrote: > Hi Mark, > > On Mon, Nov 27, 2017 at 04:37:59PM +, Mark Rutland wrote: > > To allow EL0 (and/or EL1) to use pointer authentication functionality, > > we must ensure that pointer authentication instructions and accesses to > >

Re: [PATCHv2 05/12] arm64: Don't trap host pointer auth use to EL2

2018-02-06 Thread Christoffer Dall
Hi Mark, On Mon, Nov 27, 2017 at 04:37:59PM +, Mark Rutland wrote: > To allow EL0 (and/or EL1) to use pointer authentication functionality, > we must ensure that pointer authentication instructions and accesses to > pointer authentication keys are not trapped to EL2 (where we will not be >

[PATCHv2 05/12] arm64: Don't trap host pointer auth use to EL2

2017-11-27 Thread Mark Rutland
To allow EL0 (and/or EL1) to use pointer authentication functionality, we must ensure that pointer authentication instructions and accesses to pointer authentication keys are not trapped to EL2 (where we will not be able to handle them). This patch ensures that HCR_EL2 is configured appropriately