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[Xen-changelog] [xen staging] x86/hvm: make domain_destroy() method optional



commit f5cdb099e73eff318890e7beeb62587c81069b6b
Author:     Paul Durrant <pdurrant@xxxxxxxxxx>
AuthorDate: Fri Jan 24 15:30:59 2020 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Sat Jan 25 18:43:32 2020 +0000

    x86/hvm: make domain_destroy() method optional
    
    This method is currently empty for SVM so make it optional and, while in
    the neighbourhood, make it an alternative_vcall().
    
    Signed-off-by: Paul Durrant <pdurrant@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/hvm/hvm.c     | 4 +++-
 xen/arch/x86/hvm/svm/svm.c | 5 -----
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index 6333ae6aba..0b93609a82 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -747,7 +747,9 @@ void hvm_domain_destroy(struct domain *d)
 
     hvm_destroy_cacheattr_region_list(d);
 
-    hvm_funcs.domain_destroy(d);
+    if ( hvm_funcs.domain_destroy )
+        alternative_vcall(hvm_funcs.domain_destroy, d);
+
     rtc_deinit(d);
     stdvga_deinit(d);
     vioapic_deinit(d);
diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c
index b1c376d455..b7f67f9f03 100644
--- a/xen/arch/x86/hvm/svm/svm.c
+++ b/xen/arch/x86/hvm/svm/svm.c
@@ -1155,10 +1155,6 @@ static int svm_domain_initialise(struct domain *d)
     return 0;
 }
 
-static void svm_domain_destroy(struct domain *d)
-{
-}
-
 static int svm_vcpu_initialise(struct vcpu *v)
 {
     int rc;
@@ -2425,7 +2421,6 @@ static struct hvm_function_table __initdata 
svm_function_table = {
     .cpu_up               = svm_cpu_up,
     .cpu_down             = svm_cpu_down,
     .domain_initialise    = svm_domain_initialise,
-    .domain_destroy       = svm_domain_destroy,
     .vcpu_initialise      = svm_vcpu_initialise,
     .vcpu_destroy         = svm_vcpu_destroy,
     .save_cpu_ctxt        = svm_save_vmcb_ctxt,
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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