Re: [PATCH v2 1/6] armv8: Disable pointer authentication traps for EL1

2021-09-02 Thread Tom Rini
On Thu, Aug 19, 2021 at 04:53:09PM +0100, Peter Hoyes wrote: > From: Peter Hoyes > > The use of ARMv8.3 pointer authentication (PAuth) is governed by fields > in HCR_EL2, which trigger a 'trap to EL2' if not enabled. The reset > value of these fields is 'architecturally unknown' so we must ensur

Re: [PATCH v2 1/6] armv8: Disable pointer authentication traps for EL1

2021-08-20 Thread Michael Walle
Hi, Am 2021-08-20 16:44, schrieb Andre Przywara: On 8/19/21 4:53 PM, Peter Hoyes wrote: From: Peter Hoyes The use of ARMv8.3 pointer authentication (PAuth) is governed by fields in HCR_EL2, which trigger a 'trap to EL2' if not enabled. The reset value of these fields is 'architecturally unk

Re: [PATCH v2 1/6] armv8: Disable pointer authentication traps for EL1

2021-08-20 Thread Andre Przywara
On 8/19/21 4:53 PM, Peter Hoyes wrote: From: Peter Hoyes The use of ARMv8.3 pointer authentication (PAuth) is governed by fields in HCR_EL2, which trigger a 'trap to EL2' if not enabled. The reset value of these fields is 'architecturally unknown' so we must ensure that the fields are enabled (

[PATCH v2 1/6] armv8: Disable pointer authentication traps for EL1

2021-08-19 Thread Peter Hoyes
From: Peter Hoyes The use of ARMv8.3 pointer authentication (PAuth) is governed by fields in HCR_EL2, which trigger a 'trap to EL2' if not enabled. The reset value of these fields is 'architecturally unknown' so we must ensure that the fields are enabled (to disable the traps) if we are entering