[xen staging] x86/mm: Introduce a local domain variable to write_ptbase()

[patchbot@xxxxxxx]

commit 1f2153fc5846683e6142c4405c8817d387ff3eb9
Author:     Roger Pau Monne <roger.pau@xxxxxxxxxx>
AuthorDate: Fri Jul 26 17:21:50 2024 +0200
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Tue Jul 30 17:36:51 2024 +0100

    x86/mm: Introduce a local domain variable to write_ptbase()
    
    This reduces the repeated accessing of v->domain.
    
    No functional change intended.
    
    Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/mm.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
index 38e0bfec43..e9c86208b0 100644
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -517,13 +517,14 @@ void make_cr3(struct vcpu *v, mfn_t mfn)
 
 void write_ptbase(struct vcpu *v)
 {
+    const struct domain *d = v->domain;
     struct cpu_info *cpu_info = get_cpu_info();
     unsigned long new_cr4;
 
-    new_cr4 = (is_pv_vcpu(v) && !is_idle_vcpu(v))
+    new_cr4 = (is_pv_domain(d) && !is_idle_domain(d))
               ? pv_make_cr4(v) : mmu_cr4_features;
 
-    if ( is_pv_vcpu(v) && v->domain->arch.pv.xpti )
+    if ( is_pv_domain(d) && d->arch.pv.xpti )
     {
         cpu_info->root_pgt_changed = true;
         cpu_info->pv_cr3 = __pa(this_cpu(root_pgt));
--
generated by git-patchbot for /home/xen/git/xen.git#staging