xen/apic: implement io apic read with hypercall
authorLin Ming <mlin@ss.pku.edu.cn>
Mon, 30 Apr 2012 16:16:27 +0000 (00:16 +0800)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tue, 1 May 2012 18:52:12 +0000 (14:52 -0400)
commitab6ec39a191243b9968bb9ac7f26cc7ec30c618b
tree00f009dd98820504f014867299338af7b360a1c9
parent27abd14bd9f1117dc7bdeee81a2de0557e077b61
xen/apic: implement io apic read with hypercall

Implements xen_io_apic_read with hypercall, so it returns proper
IO-APIC information instead of fabricated one.

Fallback to return an emulated IO_APIC values if hypercall fails.

[v2: fallback to return an emulated IO_APIC values if hypercall fails]
Signed-off-by: Lin Ming <mlin@ss.pku.edu.cn>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
arch/x86/xen/apic.c