On 14/10/2020 17:28, Roger Pau Monné wrote:
> On Fri, Oct 09, 2020 at 12:53:01PM +0100, Andrew Cooper wrote:
>> Despite appearing to be a deliberate design choice of early PV64, the
>> resulting behaviour for unregistered SYSCALL callbacks creates an untenable
>> testability problem for Xen. Furth
On Fri, Oct 09, 2020 at 12:53:01PM +0100, Andrew Cooper wrote:
> Despite appearing to be a deliberate design choice of early PV64, the
> resulting behaviour for unregistered SYSCALL callbacks creates an untenable
> testability problem for Xen. Furthermore, the behaviour is undocumented,
> bizarre,
On 14/10/2020 15:16, Roger Pau Monné wrote:
>> This change does constitute a change in the PV ABI, for corner cases of a PV
>> guest kernel registering neither callback, or not registering the 32bit
>> callback when running on AMD/Hygon hardware.
> Is there any place suitable to document this behav
On 14/10/2020 15:20, Manuel Bouyer wrote:
> On Wed, Oct 14, 2020 at 04:16:20PM +0200, Roger Pau Monné wrote:
>> [...]
>> Would this result in a regression for NetBSD then? Is it fine to see
>> #UD regardless of the platform? It's not clear to me from the text
>> above whether this change will cause
On Wed, Oct 14, 2020 at 04:16:20PM +0200, Roger Pau Monné wrote:
> [...]
> Would this result in a regression for NetBSD then? Is it fine to see
> #UD regardless of the platform? It's not clear to me from the text
> above whether this change will cause issues with NetBSD.
AFAIK this should not caus
On Fri, Oct 09, 2020 at 12:53:01PM +0100, Andrew Cooper wrote:
> Despite appearing to be a deliberate design choice of early PV64, the
> resulting behaviour for unregistered SYSCALL callbacks creates an untenable
> testability problem for Xen. Furthermore, the behaviour is undocumented,
> bizarre,
On 09/10/2020 13:40, Manuel Bouyer wrote:
> On Fri, Oct 09, 2020 at 12:53:01PM +0100, Andrew Cooper wrote:
>> Despite appearing to be a deliberate design choice of early PV64, the
>> resulting behaviour for unregistered SYSCALL callbacks creates an untenable
>> testability problem for Xen. Further
On Fri, Oct 09, 2020 at 12:53:01PM +0100, Andrew Cooper wrote:
> Despite appearing to be a deliberate design choice of early PV64, the
> resulting behaviour for unregistered SYSCALL callbacks creates an untenable
> testability problem for Xen. Furthermore, the behaviour is undocumented,
> bizarre,
