Re: [PATCH] xen: don't reschedule in preemption off sections

2020-08-24 Thread Greg KH
On Thu, Aug 20, 2020 at 08:59:08AM +0200, Juergen Gross wrote: > For support of long running hypercalls xen_maybe_preempt_hcall() is > calling cond_resched() in case a hypercall marked as preemptible has > been interrupted. > > Normally this is no problem, as only hypercalls done via some ioctl()s

Re: [PATCH] xen: don't reschedule in preemption off sections

2020-08-19 Thread Greg Kroah-Hartman
On Thu, Aug 20, 2020 at 07:58:55AM +0200, Jürgen Groß wrote: > On 20.08.20 07:44, Greg Kroah-Hartman wrote: > > On Thu, Aug 20, 2020 at 07:13:00AM +0200, Jürgen Groß wrote: > > > On 19.08.20 18:57, Sarah Newman wrote: > > > > On 7/10/20 5:01 AM, Jürgen Groß wrote: > > > > > On 10.07.20 13:55, Jan B

Re: [PATCH] xen: don't reschedule in preemption off sections

2020-08-19 Thread Jürgen Groß
On 20.08.20 07:44, Greg Kroah-Hartman wrote: On Thu, Aug 20, 2020 at 07:13:00AM +0200, Jürgen Groß wrote: On 19.08.20 18:57, Sarah Newman wrote: On 7/10/20 5:01 AM, Jürgen Groß wrote: On 10.07.20 13:55, Jan Beulich wrote: On 10.07.2020 12:50, Jürgen Groß wrote: On 10.07.20 11:49, Jan Beulich

Re: [PATCH] xen: don't reschedule in preemption off sections

2020-08-19 Thread Greg Kroah-Hartman
On Thu, Aug 20, 2020 at 07:13:00AM +0200, Jürgen Groß wrote: > On 19.08.20 18:57, Sarah Newman wrote: > > On 7/10/20 5:01 AM, Jürgen Groß wrote: > > > On 10.07.20 13:55, Jan Beulich wrote: > > > > On 10.07.2020 12:50, Jürgen Groß wrote: > > > > > On 10.07.20 11:49, Jan Beulich wrote: > > > > > > On

Re: [PATCH] xen: don't reschedule in preemption off sections

2020-08-19 Thread Jürgen Groß
On 19.08.20 18:57, Sarah Newman wrote: On 7/10/20 5:01 AM, Jürgen Groß wrote: On 10.07.20 13:55, Jan Beulich wrote: On 10.07.2020 12:50, Jürgen Groß wrote: On 10.07.20 11:49, Jan Beulich wrote: On 10.07.2020 09:50, Juergen Gross wrote: For support of long running hypercalls xen_maybe_preempt

Re: [PATCH] xen: don't reschedule in preemption off sections

2020-08-19 Thread Sarah Newman
On 7/10/20 5:01 AM, Jürgen Groß wrote: On 10.07.20 13:55, Jan Beulich wrote: On 10.07.2020 12:50, Jürgen Groß wrote: On 10.07.20 11:49, Jan Beulich wrote: On 10.07.2020 09:50, Juergen Gross wrote: For support of long running hypercalls xen_maybe_preempt_hcall() is calling cond_resched() in ca

Re: [PATCH] xen: don't reschedule in preemption off sections

2020-07-10 Thread Jürgen Groß
On 10.07.20 13:55, Jan Beulich wrote: On 10.07.2020 12:50, Jürgen Groß wrote: On 10.07.20 11:49, Jan Beulich wrote: On 10.07.2020 09:50, Juergen Gross wrote: For support of long running hypercalls xen_maybe_preempt_hcall() is calling cond_resched() in case a hypercall marked as preemptible has

Re: [PATCH] xen: don't reschedule in preemption off sections

2020-07-10 Thread Jan Beulich
On 10.07.2020 12:50, Jürgen Groß wrote: > On 10.07.20 11:49, Jan Beulich wrote: >> On 10.07.2020 09:50, Juergen Gross wrote: >>> For support of long running hypercalls xen_maybe_preempt_hcall() is >>> calling cond_resched() in case a hypercall marked as preemptible has >>> been interrupted. >>> >>>

Re: [PATCH] xen: don't reschedule in preemption off sections

2020-07-10 Thread Jürgen Groß
On 10.07.20 11:49, Jan Beulich wrote: On 10.07.2020 09:50, Juergen Gross wrote: For support of long running hypercalls xen_maybe_preempt_hcall() is calling cond_resched() in case a hypercall marked as preemptible has been interrupted. Normally this is no problem, as only hypercalls done via som

Re: [PATCH] xen: don't reschedule in preemption off sections

2020-07-10 Thread Jan Beulich
On 10.07.2020 09:50, Juergen Gross wrote: > For support of long running hypercalls xen_maybe_preempt_hcall() is > calling cond_resched() in case a hypercall marked as preemptible has > been interrupted. > > Normally this is no problem, as only hypercalls done via some ioctl()s > are marked to be p