On Tue, Sep 01, 2020 at 12:12:57PM +0100, Marc Zyngier wrote: > On 2020-09-01 10:49, Andre Przywara wrote: > > From: James Morse <james.morse@xxxxxxx> > > > > commit e9ee186bb735bfc17fa81dbc9aebf268aee5b41e upstream. > > > > KVM has a one instruction window where it will allow an SError exception > > to be consumed by the hypervisor without treating it as a hypervisor > > bug. > > This is used to consume asynchronous external abort that were caused by > > the guest. > > > > As we are about to add another location that survives unexpected > > exceptions, > > generalise this code to make it behave like the host's extable. > > > > KVM's version has to be mapped to EL2 to be accessible on nVHE systems. > > > > The SError vaxorcism code is a one instruction window, so has two > > entries > > in the extable. Because the KVM code is copied for VHE and nVHE, we end > > up > > with four entries, half of which correspond with code that isn't mapped. > > > > Cc: <stable@xxxxxxxxxxxxxxx> # 5.4.x > > Cc: Marc Zyngier <maz@xxxxxxxxxx> > > Signed-off-by: James Morse <james.morse@xxxxxxx> > > Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx> > > Can you make sure these patches do carry the sign-off chain as we have > in mainline? In particular, this is missing: > > Reviewed-by: Marc Zyngier <maz@xxxxxxxxxx> > Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx> > > You can add your own SoB after this. Good point. James prepared the backports before we merged the patches into mainline. BTW, I also corrected a subject typo: s/vaxoricism/vaxorcism/ (not that this is a real word ;)). -- Catalin
