Re: [PATCH] xen/events: don't use chip_data for legacy IRQs

2020-09-30 Thread Stefan Bader
30fb1ddc0a ("XEN uses irqdesc::irq_data_common::handler_data to > store a per interrupt XEN data pointer which contains XEN specific > information.") > Signed-off-by: Juergen Gross Tested-by: Stefan Bader > --- > drivers/xen/events/events_base.c | 29 +-

Re: [PATCH 0/2] Fixups for fcf-protection

2020-05-12 Thread Stefan Bader
On 12.05.20 20:47, Andrew Cooper wrote: > On 12/05/2020 08:17, Stefan Bader wrote: >> On 12.05.20 05:39, Jason Andryuk wrote: >>> Two patches to fix building with a cf-protection toolchain. The first >>> handles the case where the compiler fails to run with &qu

Re: [PATCH 0/2] Fixups for fcf-protection

2020-05-12 Thread Stefan Bader
On 12.05.20 05:39, Jason Andryuk wrote: > Two patches to fix building with a cf-protection toolchain. The first > handles the case where the compiler fails to run with "error: > ‘-mindirect-branch’ and ‘-fcf-protection’ are not compatible". > > The second fixes a runtime error that prevented Xen

Re: [Xen-devel] Ability to crash a HVM guest by accessing /dev/hpet

2018-02-21 Thread Stefan Bader
On 21.02.2018 15:40, Roger Pau Monné wrote: > On Wed, Feb 21, 2018 at 03:12:15PM +0100, Stefan Bader wrote: >> This seems to have been found by us[1] and Citrix[2] recently. To trigger >> this >> one needs to be root in the guest, so it is not super critical but still it

[Xen-devel] Ability to crash a HVM guest by accessing /dev/hpet

2018-02-21 Thread Stefan Bader
This seems to have been found by us[1] and Citrix[2] recently. To trigger this one needs to be root in the guest, so it is not super critical but still it seems to be a bit harsh that purely opening /dev/hpet read-only is leading to a domain crash via xen/arch/x86/hvm/hpet.c@375(hpet_write):