[xen staging] x86/vpt: simplify locking argument to write_{,un}lock

[patchbot@xxxxxxx]

commit e67b9816427a62f0b12916bab36763840fa41854
Author:     Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
AuthorDate: Fri Apr 9 09:22:04 2021 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Apr 9 09:22:04 2021 +0200

    x86/vpt: simplify locking argument to write_{,un}lock
    
    Make pt_adjust_vcpu() call write_{,un}lock with less indirection, like
    create_periodic_time() already does.
    
    Requested-by: Jan Beulich <jbeulich@xxxxxxxx>
    Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
    Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
---
 xen/arch/x86/hvm/vpt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/hvm/vpt.c b/xen/arch/x86/hvm/vpt.c
index 560fab9cfc..4cc0a0848b 100644
--- a/xen/arch/x86/hvm/vpt.c
+++ b/xen/arch/x86/hvm/vpt.c
@@ -592,7 +592,7 @@ static void pt_adjust_vcpu(struct periodic_time *pt, struct 
vcpu *v)
     if ( pt->vcpu == NULL )
         return;
 
-    write_lock(&pt->vcpu->domain->arch.hvm.pl_time->pt_migrate);
+    write_lock(&v->domain->arch.hvm.pl_time->pt_migrate);
 
     if ( pt->vcpu == v )
         goto out;
@@ -613,7 +613,7 @@ static void pt_adjust_vcpu(struct periodic_time *pt, struct 
vcpu *v)
     pt_vcpu_unlock(v);
 
  out:
-    write_unlock(&pt->vcpu->domain->arch.hvm.pl_time->pt_migrate);
+    write_unlock(&v->domain->arch.hvm.pl_time->pt_migrate);
 }
 
 void pt_adjust_global_vcpu_target(struct vcpu *v)
--
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