[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v5 16/18] xen/mem_access: Use __get_gfn_type_access in set_mem_access
Use __get_gfn_type_access instead of p2m->get_entry to trigger page-forking when the mem_access permission is being set on a page that has not yet been copied over from the parent. Signed-off-by: Tamas K Lengyel <tamas.lengyel@xxxxxxxxx> --- xen/arch/x86/mm/mem_access.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/xen/arch/x86/mm/mem_access.c b/xen/arch/x86/mm/mem_access.c index 320b9fe621..9caf08a5b2 100644 --- a/xen/arch/x86/mm/mem_access.c +++ b/xen/arch/x86/mm/mem_access.c @@ -303,11 +303,10 @@ static int set_mem_access(struct domain *d, struct p2m_domain *p2m, ASSERT(!ap2m); #endif { - mfn_t mfn; p2m_access_t _a; p2m_type_t t; - - mfn = p2m->get_entry(p2m, gfn, &t, &_a, 0, NULL, NULL); + mfn_t mfn = __get_gfn_type_access(p2m, gfn_x(gfn), &t, &_a, + P2M_ALLOC, NULL, false); rc = p2m->set_entry(p2m, gfn, mfn, PAGE_ORDER_4K, t, a, -1); } -- 2.20.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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