On 31/05/18 10:49, Russell King - ARM Linux wrote: > On Tue, May 29, 2018 at 06:02:28PM +0100, Marc Zyngier wrote: >> On Tue, 29 May 2018 15:55:01 +0100, >> Russell King wrote: >>> >>> Warn at error level if the context switching function is not what we >>> are expecting. This can happen with big.Little systems, which we >>> currently do not support. >>> >>> Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx> >>> Boot-tested-by: Tony Lindgren <tony@xxxxxxxxxxx> >>> Reviewed-by: Tony Lindgren <tony@xxxxxxxxxxx> >> >> I assume this is a temporary situation until the ARM port grows the >> necessary infrastructure to support this mitigation on heterogeneous >> systems. > > As I've said, I think that is going to be a very difficult problem to > resolve. I detailed why in previous emails, but it seems each time I > do that, no one bothers to respond (presumably because no one has any > ideas how to sort that problem either.) > > I believe that it's better to get some of the mitigations in the kernel > and warn about non-supported setups than it is to hold it back. I agree with you that it is better to get this merged quickly, and then address exotic configurations (which are unfortunately quite common these days) separately. I haven't had the time to try and understand how to fix it though. > I notice that you haven't replied to some of the patches (7 and 8), > which makes me think that you have an issue with them - and as tonight > is likely the last linux-next before the merge window, we're basically > out of time to do another respin if there's something you don't like > there and if we want to get them in during the next merge window. Patches 7 and 8 didn't compile for me, and I had to fix-up things manually in order to test it. Not that it should hold you back from merging it. Thanks, M. -- Jazz is not dead. It just smells funny... _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
