Re: [Xen-devel] [PATCH v2 01/19] xen/arm: Save ESR_EL2 to avoid using mismatched value in syndrome check

Hi Julien On 2017/3/30 21:31, Julien Grall wrote: > Hi Wei, > > On 30/03/17 10:13, Wei Chen wrote: >> Xen will do exception syndrome check while some types of exception >> take place in EL2. The syndrome check code read the ESR_EL2 register >> directly, but in some situation this register maybe

Re: [Xen-devel] [PATCH v2 01/19] xen/arm: Save ESR_EL2 to avoid using mismatched value in syndrome check

Hi Wei, On 30/03/17 10:13, Wei Chen wrote: Xen will do exception syndrome check while some types of exception take place in EL2. The syndrome check code read the ESR_EL2 register directly, but in some situation this register maybe overridden by nested exception. For example, if we re-enable

[Xen-devel] [PATCH v2 01/19] xen/arm: Save ESR_EL2 to avoid using mismatched value in syndrome check

Xen will do exception syndrome check while some types of exception take place in EL2. The syndrome check code read the ESR_EL2 register directly, but in some situation this register maybe overridden by nested exception. For example, if we re-enable IRQ before reading ESR_EL2 which means Xen may