RE: [PATCH v20 22/28] x86/traps: Attempt to fixup exceptions in vDSO before signaling

From: Xing, Cedric
Date: Thu Jun 27 2019 - 16:33:03 EST

> From: linux-sgx-owner@xxxxxxxxxxxxxxx [mailto:linux-sgx-
> owner@xxxxxxxxxxxxxxx] On Behalf Of Jarkko Sakkinen
> Sent: Tuesday, June 25, 2019 8:44 AM
> I went through the vDSO changes just to revisit couple of details that I
> had forgotten. Sean, if you don't mind I'd squash this and prepending
> patch.

Just a reminder that #DB/#BP shall be treated differently because they are used by debuggers. So instead of branching to the fixup address, the kernel shall just signal the process.

> Is there any obvious reason why #PF fixup is in its own patch and the
> rest are collected to the same patch? I would not find it confusing if
> there was one patch per exception but really don't get this division.
> /Jarkko