xen: initialize cpu masks for pv guests in xen_smp_init

Browse source

Pv guests don't have ACPI and need the cpu masks to be set
correctly as early as possible so we call xen_fill_possible_map from
xen_smp_init.
On the other hand the initial domain supports ACPI so in this case we skip
xen_fill_possible_map and rely on it. However Xen might limit the number
of cpus usable by the domain, so we filter those masks during smp
initialization using the VCPUOP_is_up hypercall.
It is important that the filtering is done before
xen_setup_vcpu_info_placement.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

...

This commit is contained in:

Stefano Stabellini 2010-10-26 17:28:33 +01:00

parent 0e058e5277

commit ea5b8f7393

1 changed files with 22 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

24

arch/x86/xen/smp.c

View file