[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v5 13/18] x86/mem_sharing: Skip xen heap pages in memshr nominate
Trying to share these would fail anyway, better to skip them early. Signed-off-by: Tamas K Lengyel <tamas.lengyel@xxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> --- xen/arch/x86/mm/mem_sharing.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/mm/mem_sharing.c b/xen/arch/x86/mm/mem_sharing.c index 172f02e780..eac8047c07 100644 --- a/xen/arch/x86/mm/mem_sharing.c +++ b/xen/arch/x86/mm/mem_sharing.c @@ -840,6 +840,11 @@ static int nominate_page(struct domain *d, gfn_t gfn, if ( !p2m_is_sharable(p2mt) ) goto out; + /* Skip xen heap pages */ + page = mfn_to_page(mfn); + if ( !page || is_xen_heap_page(page) ) + goto out; + /* Check if there are mem_access/remapped altp2m entries for this page */ if ( altp2m_active(d) ) { @@ -870,7 +875,6 @@ static int nominate_page(struct domain *d, gfn_t gfn, } /* Try to convert the mfn to the sharable type */ - page = mfn_to_page(mfn); ret = page_make_sharable(d, page, expected_refcnt); if ( ret ) goto out; -- 2.20.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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