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From: Hongyan Xia To: xen-devel@lists.xenproject.org Date: Mon, 23 Mar 2020 09:41:41 +0000 Message-Id: <67b6f30fb36b44f26aba8a5039d5b551addf206d.1584955616.git.hongyxia@amazon.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Subject: [Xen-devel] [PATCH 4/5] x86_64/mm: map and unmap page tables in destroy_compat_m2p_mapping X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Andrew Cooper , Wei Liu , Jan Beulich , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) From: Wei Liu Signed-off-by: Wei Liu Reviewed-by: Hongyan Xia --- xen/arch/x86/x86_64/mm.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/xen/arch/x86/x86_64/mm.c b/xen/arch/x86/x86_64/mm.c index 2680173fab..71c84ac593 100644 --- a/xen/arch/x86/x86_64/mm.c +++ b/xen/arch/x86/x86_64/mm.c @@ -235,11 +235,13 @@ static void destroy_compat_m2p_mapping(struct mem_hot= add_info *info) if ( emap > ((RDWR_COMPAT_MPT_VIRT_END - RDWR_COMPAT_MPT_VIRT_START) >= > 2) ) emap =3D (RDWR_COMPAT_MPT_VIRT_END - RDWR_COMPAT_MPT_VIRT_START) >= > 2; =20 - l3_ro_mpt =3D l4e_to_l3e(idle_pg_table[l4_table_offset(HIRO_COMPAT_MPT= _VIRT_START)]); + l3_ro_mpt =3D map_l3t_from_l4e(idle_pg_table[ + l4_table_offset(HIRO_COMPAT_MPT_VIRT_START)]); =20 ASSERT(l3e_get_flags(l3_ro_mpt[l3_table_offset(HIRO_COMPAT_MPT_VIRT_ST= ART)]) & _PAGE_PRESENT); =20 - l2_ro_mpt =3D l3e_to_l2e(l3_ro_mpt[l3_table_offset(HIRO_COMPAT_MPT_VIR= T_START)]); + l2_ro_mpt =3D map_l2t_from_l3e( + l3_ro_mpt[l3_table_offset(HIRO_COMPAT_MPT_VIRT_START)]= ); =20 for ( i =3D smap; i < emap; ) { @@ -261,6 +263,9 @@ static void destroy_compat_m2p_mapping(struct mem_hotad= d_info *info) i +=3D 1UL << (L2_PAGETABLE_SHIFT - 2); } =20 + UNMAP_DOMAIN_PAGE(l2_ro_mpt); + UNMAP_DOMAIN_PAGE(l3_ro_mpt); + return; } =20 --=20 2.24.1.AMZN _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel