On Mon, 3 Aug 2020 at 10:32, Olivier Deprez via Hafnium < hafnium@lists.trustedfirmware.org> wrote:
Hi,
On a Stage-2 page fault, Hafnium does not report FAR_EL2 to FAR_EL1 in inject_el1_exception .
As a consequence EL1 is resumed although it cannot determine the faulting address from FAR_EL1 (which likely holds zero or some other remnant value?).
Is this intended?
That sounds like a bug.
Fuad, did you work on this? Any idea what's going on here?
(Note, Fuad is away this week but can hopefully reply next week.)
On Tue, Aug 4, 2020 at 11:16 AM Andrew Walbran qwandor@google.com wrote:
On Mon, 3 Aug 2020 at 10:32, Olivier Deprez via Hafnium < hafnium@lists.trustedfirmware.org> wrote:
Hi,
On a Stage-2 page fault, Hafnium does not report FAR_EL2 to FAR_EL1 in inject_el1_exception .
As a consequence EL1 is resumed although it cannot determine the faulting address from FAR_EL1 (which likely holds zero or some other remnant value?).
Is this intended?
That sounds like a bug.
Fuad, did you work on this? Any idea what's going on here?
(Note, Fuad is away this week but can hopefully reply next week.)
It is a bug, an oversight on my part. I'll post a patch.
Cheers, /fuad
hafnium@lists.trustedfirmware.org
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Andrew Walbran -
Fuad Tabba