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authorMukesh Rathor <mukesh.rathor@oracle.com>2013-12-31 14:02:44 -0500
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2014-01-06 10:44:09 -0500
commit4dd322bc3b25be40dfa91e8ac483b846f3e8dffc (patch)
treea2a43cced3f4eb0224ba534da70d9cf7b8e1423a /arch/x86/xen/p2m.c
parent76bcceff0bfbded075c9703ec5413a9bf50ef8c4 (diff)
downloadlinux-4dd322bc3b25be40dfa91e8ac483b846f3e8dffc.tar.bz2
xen/pvh: Setup up shared_info.
For PVHVM the shared_info structure is provided via the same way as for normal PV guests (see include/xen/interface/xen.h). That is during bootup we get 'xen_start_info' via the %esi register in startup_xen. Then later we extract the 'shared_info' from said structure (in xen_setup_shared_info) and start using it. The 'xen_setup_shared_info' is all setup to work with auto-xlat guests, but there are two functions which it calls that are not: xen_setup_mfn_list_list and xen_setup_vcpu_info_placement. This patch modifies the P2M code (xen_setup_mfn_list_list) while the "Piggyback on PVHVM for event channels" modifies the xen_setup_vcpu_info_placement. Signed-off-by: Mukesh Rathor <mukesh.rathor@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen/p2m.c')
-rw-r--r--arch/x86/xen/p2m.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index fb7ee0a4f9d0..696c694986d0 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -339,6 +339,9 @@ void __ref xen_build_mfn_list_list(void)
void xen_setup_mfn_list_list(void)
{
+ if (xen_feature(XENFEAT_auto_translated_physmap))
+ return;
+
BUG_ON(HYPERVISOR_shared_info == &xen_dummy_shared_info);
HYPERVISOR_shared_info->arch.pfn_to_mfn_frame_list_list =