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openSUSE:12.2
xen
23980-xenpaging_disallow_paging_in_a_PoD_guest....
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File 23980-xenpaging_disallow_paging_in_a_PoD_guest.patch of Package xen
changeset: 23980:a06609840ff1 user: Olaf Hering <olaf@aepfle.de> date: Thu Oct 20 11:25:58 2011 +0100 files: tools/xenpaging/xenpaging.c xen/arch/x86/mm/mem_event.c description: xenpaging: disallow paging in a PoD guest Disallow xenpaging in a PoD guest until coexistance between the two features is properly implemented. Signed-off-by: Olaf Hering <olaf@aepfle.de> Acked-by: Tim Deegan <tim@xen.org> Committed-by: Tim Deegan <tim@xen.org> --- tools/xenpaging/xenpaging.c | 3 +++ xen/arch/x86/mm/mem_event.c | 6 ++++++ 2 files changed, 9 insertions(+) Index: xen-4.1.2-testing/tools/xenpaging/xenpaging.c =================================================================== --- xen-4.1.2-testing.orig/tools/xenpaging/xenpaging.c +++ xen-4.1.2-testing/tools/xenpaging/xenpaging.c @@ -246,6 +246,9 @@ static xenpaging_t *xenpaging_init(domid case ENODEV: ERROR("EPT not supported for this guest"); break; + case EXDEV: + ERROR("xenpaging not supported in a PoD guest"); + break; default: ERROR("Error initialising shared page: %s", strerror(errno)); break; Index: xen-4.1.2-testing/xen/arch/x86/mm/mem_event.c =================================================================== --- xen-4.1.2-testing.orig/xen/arch/x86/mm/mem_event.c +++ xen-4.1.2-testing/xen/arch/x86/mm/mem_event.c @@ -253,6 +253,7 @@ int mem_event_domctl(struct domain *d, x case XEN_DOMCTL_MEM_EVENT_OP_PAGING: { struct mem_event_domain *med = &d->mem_paging; + struct p2m_domain *p2m = p2m_get_hostp2m(d); rc = -ENODEV; /* Only HAP is supported */ if ( !hap_enabled(d) ) @@ -262,6 +263,11 @@ int mem_event_domctl(struct domain *d, x if ( boot_cpu_data.x86_vendor != X86_VENDOR_INTEL ) break; + rc = -EXDEV; + /* Disallow paging in a PoD guest */ + if ( p2m->pod.entry_count ) + break; + switch( mec->op ) { case XEN_DOMCTL_MEM_EVENT_OP_PAGING_ENABLE:
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