15 Oct
2024
15 Oct
'24
11:37 a.m.
On Tue, Oct 15, 2024 at 10:59:11AM +0100, Joey Gouly wrote:
On Mon, Oct 14, 2024 at 06:10:23PM +0100, Will Deacon wrote:
Looking a little more at this, I think we have quite a weird behaviour on arm64 as it stands. It looks like we rely on the signal frame to hold the original POR_EL0 so, if for some reason we fail to allocate space for the POR context, I think we'll return back from the signal with POR_EL0_INIT. That seems bad?
If we don't allocate space for POR_EL0, I think the program recieves SIGSGEV?
...
So I think it's "fine"?
Yeah, there's a bunch of other stuff would go badly if we tried to carry on after failing to allocate a signal frame.