Re: [Xen-devel] [PATCH] xen/arm32: Distinguish guest SError from Xen data aborts

2017-05-03 Thread Wei Chen
Hi Stefano, On 2017/5/4 5:56, Stefano Stabellini wrote: > On Wed, 3 May 2017, Wei Chen wrote: >> ARM32 doesn't have an exception similar to hyp_sync of ARM64 to catch >> the synchronous data abort (For example, a NULL pointer has been referenced). >> Hence the SError and sync data abort will be ca

Re: [Xen-devel] [PATCH] xen/arm32: Distinguish guest SError from Xen data aborts

2017-05-03 Thread Stefano Stabellini
On Wed, 3 May 2017, Wei Chen wrote: > ARM32 doesn't have an exception similar to hyp_sync of ARM64 to catch > the synchronous data abort (For example, a NULL pointer has been referenced). > Hence the SError and sync data abort will be caught by the same data abort > exception. > > Since commit "3f

[Xen-devel] [PATCH] xen/arm32: Distinguish guest SError from Xen data aborts

2017-05-02 Thread Wei Chen
ARM32 doesn't have an exception similar to hyp_sync of ARM64 to catch the synchronous data abort (For example, a NULL pointer has been referenced). Hence the SError and sync data abort will be caught by the same data abort exception. Since commit "3f16c8cb" we treat all data aborts caught by this