| From | Stefano Stabellini <> | Subject | [PATCH v8 04/19] xen/x86: allow __set_phys_to_machine for autotranslate guests | Date | Thu, 17 Oct 2013 18:43:19 +0100 |
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Allow __set_phys_to_machine to be called for autotranslate guests. It can be used to keep track of phys_to_machine changes, however we don't do anything with the information at the moment.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> --- arch/x86/xen/p2m.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 95fb2aa..59d9e70 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -798,10 +798,10 @@ bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn) { unsigned topidx, mididx, idx; - if (unlikely(xen_feature(XENFEAT_auto_translated_physmap))) { - BUG_ON(pfn != mfn && mfn != INVALID_P2M_ENTRY); + /* don't track P2M changes in autotranslate guests */ + if (unlikely(xen_feature(XENFEAT_auto_translated_physmap))) return true; - } + if (unlikely(pfn >= MAX_P2M_PFN)) { BUG_ON(mfn != INVALID_P2M_ENTRY); return true; -- 1.7.2.5
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