diff options
author | Mukesh Rathor <mukesh.rathor@oracle.com> | 2013-12-13 12:45:31 -0500 |
---|---|---|
committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2014-01-06 10:43:59 -0500 |
commit | d285d68314af49c4456b71d248e355dd33ae375c (patch) | |
tree | b189dbf02b54ee5688ca5d985c69e955ca99d534 /net/can | |
parent | ddc416cbc4e34f52bebca027de1c099bd30795f8 (diff) | |
download | talos-op-linux-d285d68314af49c4456b71d248e355dd33ae375c.tar.gz talos-op-linux-d285d68314af49c4456b71d248e355dd33ae375c.zip |
xen/pvh: Early bootup changes in PV code (v4).
We don't use the filtering that 'xen_cpuid' is doing
because the hypervisor treats 'XEN_EMULATE_PREFIX' as
an invalid instruction. This means that all of the filtering
will have to be done in the hypervisor/toolstack.
Without the filtering we expose to the guest the:
- cpu topology (sockets, cores, etc);
- the APERF (which the generic scheduler likes to
use), see 5e626254206a709c6e937f3dda69bf26c7344f6f
"xen/setup: filter APERFMPERF cpuid feature out"
- and the inability to figure out whether MWAIT_LEAF
should be exposed or not. See
df88b2d96e36d9a9e325bfcd12eb45671cbbc937
"xen/enlighten: Disable MWAIT_LEAF so that acpi-pad won't be loaded."
- x2apic, see 4ea9b9aca90cfc71e6872ed3522356755162932c
"xen: mask x2APIC feature in PV"
We also check for vector callback early on, as it is a required
feature. PVH also runs at default kernel IOPL.
Finally, pure PV settings are moved to a separate function that are
only called for pure PV, ie, pv with pvmmu. They are also #ifdef
with CONFIG_XEN_PVMMU.
Signed-off-by: Mukesh Rathor <mukesh.rathor@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Diffstat (limited to 'net/can')
0 files changed, 0 insertions, 0 deletions