[Xen-changelog] [xen master] x86/HVM: introduce "curr" into hvmemul_rep_{mov, sto}s()

[patchbot@xxxxxxx]

commit 38d106d7b09a6c024b7b443ee79ff1e1db5105c4
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Thu Feb 6 16:22:28 2020 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Feb 6 16:22:28 2020 +0100

    x86/HVM: introduce "curr" into hvmemul_rep_{mov,sto}s()
    
    There are a number of uses of "current" already, and more may appear
    down the road. Latch into a local variable.
    
    At this occasion also drop stray casts from code getting touched anyway.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Paul Durrant <pdurrant@xxxxxxxxxx>
---
 xen/arch/x86/hvm/emulate.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/xen/arch/x86/hvm/emulate.c b/xen/arch/x86/hvm/emulate.c
index a3aa33a44f..870af32fc7 100644
--- a/xen/arch/x86/hvm/emulate.c
+++ b/xen/arch/x86/hvm/emulate.c
@@ -1747,7 +1747,8 @@ static int hvmemul_rep_movs(
 {
     struct hvm_emulate_ctxt *hvmemul_ctxt =
         container_of(ctxt, struct hvm_emulate_ctxt, ctxt);
-    struct hvm_vcpu_io *vio = &current->arch.hvm.hvm_io;
+    struct vcpu *curr = current;
+    struct hvm_vcpu_io *vio = &curr->arch.hvm.hvm_io;
     unsigned long saddr, daddr, bytes;
     paddr_t sgpa, dgpa;
     uint32_t pfec = PFEC_page_present;
@@ -1807,8 +1808,8 @@ static int hvmemul_rep_movs(
     }
 
     /* Check for MMIO ops */
-    (void) get_gfn_query_unlocked(current->domain, sgpa >> PAGE_SHIFT, &sp2mt);
-    (void) get_gfn_query_unlocked(current->domain, dgpa >> PAGE_SHIFT, &dp2mt);
+    get_gfn_query_unlocked(curr->domain, sgpa >> PAGE_SHIFT, &sp2mt);
+    get_gfn_query_unlocked(curr->domain, dgpa >> PAGE_SHIFT, &dp2mt);
 
     if ( sp2mt == p2m_mmio_direct || dp2mt == p2m_mmio_direct ||
          (sp2mt == p2m_mmio_dm && dp2mt == p2m_mmio_dm) )
@@ -1873,7 +1874,7 @@ static int hvmemul_rep_movs(
         rc = hvm_copy_from_guest_phys(buf, sgpa, bytes);
 
     if ( rc == HVMTRANS_okay )
-        rc = hvm_copy_to_guest_phys(dgpa, buf, bytes, current);
+        rc = hvm_copy_to_guest_phys(dgpa, buf, bytes, curr);
 
     xfree(buf);
 
@@ -1910,7 +1911,8 @@ static int hvmemul_rep_stos(
 {
     struct hvm_emulate_ctxt *hvmemul_ctxt =
         container_of(ctxt, struct hvm_emulate_ctxt, ctxt);
-    struct hvm_vcpu_io *vio = &current->arch.hvm.hvm_io;
+    struct vcpu *curr = current;
+    struct hvm_vcpu_io *vio = &curr->arch.hvm.hvm_io;
     unsigned long addr, bytes;
     paddr_t gpa;
     p2m_type_t p2mt;
@@ -1943,7 +1945,7 @@ static int hvmemul_rep_stos(
     }
 
     /* Check for MMIO op */
-    (void)get_gfn_query_unlocked(current->domain, gpa >> PAGE_SHIFT, &p2mt);
+    get_gfn_query_unlocked(curr->domain, gpa >> PAGE_SHIFT, &p2mt);
 
     switch ( p2mt )
     {
@@ -1992,7 +1994,7 @@ static int hvmemul_rep_stos(
         if ( df )
             gpa -= bytes - bytes_per_rep;
 
-        rc = hvm_copy_to_guest_phys(gpa, buf, bytes, current);
+        rc = hvm_copy_to_guest_phys(gpa, buf, bytes, curr);
 
         if ( buf != p_data )
             xfree(buf);
--
generated by git-patchbot for /home/xen/git/xen.git#master

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