diff mbox series

[RFC,50/84] x86/smpboot: remove lXe_to_lYe in cleanup_cpu_root_pgt

Message ID 89715b3932df742de4f14474358eaeeb5db2c841.1569489002.git.hongyax@amazon.com (mailing list archive)
State New, archived
Headers show
Series Remove direct map from Xen | expand

Commit Message

Xia, Hongyan Sept. 26, 2019, 9:46 a.m. UTC 
From: Wei Liu <wei.liu2@citrix.com>

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
 xen/arch/x86/smpboot.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index f09563ab34..d657ac0108 100644
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -951,11 +951,17 @@  static void cleanup_cpu_root_pgt(unsigned int cpu)
     /* Also zap the stub mapping for this CPU. */
     if ( stub_linear )
     {
-        l3_pgentry_t *l3t = l4e_to_l3e(common_pgt);
-        l2_pgentry_t *l2t = l3e_to_l2e(l3t[l3_table_offset(stub_linear)]);
-        l1_pgentry_t *l1t = l2e_to_l1e(l2t[l2_table_offset(stub_linear)]);
+        l3_pgentry_t *l3t = map_xen_pagetable_new(l4e_get_mfn(common_pgt));
+        l2_pgentry_t *l2t = map_xen_pagetable_new(
+            l3e_get_mfn(l3t[l3_table_offset(stub_linear)]));
+        l1_pgentry_t *l1t = map_xen_pagetable_new(
+            l2e_get_mfn(l2t[l2_table_offset(stub_linear)]));
 
         l1t[l1_table_offset(stub_linear)] = l1e_empty();
+
+        UNMAP_XEN_PAGETABLE_NEW(l1t);
+        UNMAP_XEN_PAGETABLE_NEW(l2t);
+        UNMAP_XEN_PAGETABLE_NEW(l3t);
     }
 }