From: Wei Liu Date: Tue, 5 Feb 2019 16:35:28 +0000 (+0000) Subject: x86/pv: properly map and unmap page table in dom0_construct_pv X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=21aa80a50aae5b67a0230de6ccee94e481818524;p=people%2Fliuw%2Fxen.git x86/pv: properly map and unmap page table in dom0_construct_pv Signed-off-by: Wei Liu --- diff --git a/xen/arch/x86/pv/dom0_build.c b/xen/arch/x86/pv/dom0_build.c index 293be076d9..a07d2138a2 100644 --- a/xen/arch/x86/pv/dom0_build.c +++ b/xen/arch/x86/pv/dom0_build.c @@ -690,6 +690,8 @@ 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 ) { @@ -704,7 +706,9 @@ 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_xen_pagetable_new(l3e_get_mfn(l3start[3])); + init_xen_pae_l2_slots(l2t, d); + UNMAP_XEN_PAGETABLE_NEW(l2t); } /* Pages that are part of page tables must be read only. */