x86/pv: don't populate the GDT/LDT L3 slot at domain creation

The current code in pv_domain_initialise() populates the L3 slot used for the GDT/LDT, however that's not needed, since the create_perdomain_mapping() in pv_create_gdt_ldt_l1tab() will already take care of allocating an L2 and populating the L3 entry if not present. No functional change intended. Signed-off-by: Roger Pau Monné <[email protected]> Reviewed-by: Jan Beulich <[email protected]>
olafhering · Nov 26, 2024 · fcf91ce · fcf91ce
1 parent 8fe330a
commit fcf91ce
Showing 1 changed file with 0 additions and 6 deletions.
diff --git a/xen/arch/x86/pv/domain.c b/xen/arch/x86/pv/domain.c
@@ -376,12 +376,6 @@ int pv_domain_initialise(struct domain *d)
          (d->arch.pv.cpuidmasks = xmemdup(&cpuidmask_defaults)) == NULL )
         goto fail;
 
-    rc = create_perdomain_mapping(d, GDT_LDT_VIRT_START,
-                                  GDT_LDT_MBYTES << (20 - PAGE_SHIFT),
-                                  NULL, NULL);
-    if ( rc )
-        goto fail;
-
     d->arch.ctxt_switch = &pv_csw;
 
     if ( !is_pv_32bit_domain(d) && use_invpcid && cpu_has_pcid )