On Fri, Feb 28, 2020 at 11:08:43AM +0100, Jan Beulich wrote:
> On 28.02.2020 10:33, Roger Pau Monne wrote:
> > --- a/xen/arch/x86/smp.c
> > +++ b/xen/arch/x86/smp.c
> > @@ -59,6 +59,8 @@ static void send_IPI_shortcut(unsigned int shortcut, int
> > vector,
> > apic_write(APIC_ICR, cfg);
> > }
On 28.02.2020 10:33, Roger Pau Monne wrote:
> --- a/xen/arch/x86/smp.c
> +++ b/xen/arch/x86/smp.c
> @@ -59,6 +59,8 @@ static void send_IPI_shortcut(unsigned int shortcut, int
> vector,
> apic_write(APIC_ICR, cfg);
> }
>
> +DECLARE_PER_CPU(cpumask_var_t, send_ipi_cpumask);
This needs to be
Some callers of send_IPI_mask pass the scratch cpumask as the mask
parameter of send_IPI_mask, so the scratch cpumask cannot be used by
the function. The following trace has been obtained with a debug patch
and shows one of those callers:
(XEN) scratch CPU mask already in use by
arch/x86/mm.c#_ge
