From e55884368563eb0d905b08d8bab501b53d612b68 Mon Sep 17 00:00:00 2001 From: Wei Liu Date: Tue, 28 Apr 2020 17:49:17 +0200 Subject: [PATCH] x86/pv: map and unmap page table in dom0_construct_pv Signed-off-by: Wei Liu Signed-off-by: Hongyan Xia Reviewed-by: Julien Grall Acked-by: Jan Beulich --- xen/arch/x86/pv/dom0_build.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/pv/dom0_build.c b/xen/arch/x86/pv/dom0_build.c index 5678da782d..abfbe5f436 100644 --- a/xen/arch/x86/pv/dom0_build.c +++ b/xen/arch/x86/pv/dom0_build.c @@ -669,6 +669,8 @@ int __init dom0_construct_pv(struct domain *d, if ( is_pv_32bit_domain(d) ) { + l2_pgentry_t *l2t; + /* Ensure the first four L3 entries are all populated. */ for ( i = 0, l3tab = l3start; i < 4; ++i, ++l3tab ) { @@ -683,7 +685,9 @@ int __init dom0_construct_pv(struct domain *d, l3e_get_page(*l3tab)->u.inuse.type_info |= PGT_pae_xen_l2; } - init_xen_pae_l2_slots(l3e_to_l2e(l3start[3]), d); + l2t = map_l2t_from_l3e(l3start[3]); + init_xen_pae_l2_slots(l2t, d); + unmap_domain_page(l2t); } /* Pages that are part of page tables must be read only. */ -- 2.30.2