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[Xen-devel] [PATCH v8 11/11] x86/hvm: Remove save_one handler


  • To: xen-devel@xxxxxxxxxxxxx
  • From: Alexandru Isaila <aisaila@xxxxxxxxxxxxxxx>
  • Date: Mon, 25 Jun 2018 17:50:47 +0300
  • Cc: wei.liu2@xxxxxxxxxx, andrew.cooper3@xxxxxxxxxx, ian.jackson@xxxxxxxxxxxxx, paul.durrant@xxxxxxxxxx, jbeulich@xxxxxxxx, Alexandru Isaila <aisaila@xxxxxxxxxxxxxxx>
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Signed-off-by: Alexandru Isaila <aisaila@xxxxxxxxxxxxxxx>
---
 xen/arch/x86/cpu/mcheck/vmce.c |  1 -
 xen/arch/x86/hvm/hpet.c        |  2 +-
 xen/arch/x86/hvm/hvm.c         |  5 +----
 xen/arch/x86/hvm/i8254.c       |  2 +-
 xen/arch/x86/hvm/irq.c         |  6 +++---
 xen/arch/x86/hvm/mtrr.c        |  2 +-
 xen/arch/x86/hvm/pmtimer.c     |  2 +-
 xen/arch/x86/hvm/rtc.c         |  2 +-
 xen/arch/x86/hvm/save.c        | 14 +++-----------
 xen/arch/x86/hvm/vioapic.c     |  2 +-
 xen/arch/x86/hvm/viridian.c    |  3 +--
 xen/arch/x86/hvm/vlapic.c      |  4 ++--
 xen/arch/x86/hvm/vpic.c        |  2 +-
 xen/include/asm-x86/hvm/save.h |  6 +-----
 14 files changed, 18 insertions(+), 35 deletions(-)

diff --git a/xen/arch/x86/cpu/mcheck/vmce.c b/xen/arch/x86/cpu/mcheck/vmce.c
index 564c639..b6d3c35 100644
--- a/xen/arch/x86/cpu/mcheck/vmce.c
+++ b/xen/arch/x86/cpu/mcheck/vmce.c
@@ -381,7 +381,6 @@ static int vmce_load_vcpu_ctxt(struct domain *d, 
hvm_domain_context_t *h)
 }
 
 HVM_REGISTER_SAVE_RESTORE(VMCE_VCPU, vmce_save_vcpu_ctxt,
-                          NULL,
                           vmce_load_vcpu_ctxt, 1, HVMSR_PER_VCPU);
 
 /*
diff --git a/xen/arch/x86/hvm/hpet.c b/xen/arch/x86/hvm/hpet.c
index 6e7f744..3ed6547 100644
--- a/xen/arch/x86/hvm/hpet.c
+++ b/xen/arch/x86/hvm/hpet.c
@@ -641,7 +641,7 @@ static int hpet_load(struct domain *d, hvm_domain_context_t 
*h)
     return 0;
 }
 
-HVM_REGISTER_SAVE_RESTORE(HPET, hpet_save, NULL, hpet_load, 1, HVMSR_PER_DOM);
+HVM_REGISTER_SAVE_RESTORE(HPET, hpet_save, hpet_load, 1, HVMSR_PER_DOM);
 
 static void hpet_set(HPETState *h)
 {
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index 9beeeca..a384c0e 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -770,7 +770,6 @@ static int hvm_load_tsc_adjust(struct domain *d, 
hvm_domain_context_t *h)
 }
 
 HVM_REGISTER_SAVE_RESTORE(TSC_ADJUST, hvm_save_tsc_adjust,
-                          NULL,
                           hvm_load_tsc_adjust, 1, HVMSR_PER_VCPU);
 
 static int hvm_save_cpu_ctxt(struct vcpu *v, hvm_domain_context_t *h)
@@ -1153,7 +1152,7 @@ static int hvm_load_cpu_ctxt(struct domain *d, 
hvm_domain_context_t *h)
     return 0;
 }
 
-HVM_REGISTER_SAVE_RESTORE(CPU, hvm_save_cpu_ctxt, NULL,
+HVM_REGISTER_SAVE_RESTORE(CPU, hvm_save_cpu_ctxt,
                           hvm_load_cpu_ctxt,
                           1, HVMSR_PER_VCPU);
 
@@ -1472,7 +1471,6 @@ static int __init hvm_register_CPU_save_and_restore(void)
     hvm_register_savevm(CPU_XSAVE_CODE,
                         "CPU_XSAVE",
                         hvm_save_cpu_xsave_states,
-                        NULL,
                         hvm_load_cpu_xsave_states,
                         HVM_CPU_XSAVE_SIZE(xfeature_mask) +
                             sizeof(struct hvm_save_descriptor),
@@ -1485,7 +1483,6 @@ static int __init hvm_register_CPU_save_and_restore(void)
         hvm_register_savevm(CPU_MSR_CODE,
                             "CPU_MSR",
                             hvm_save_cpu_msrs,
-                            NULL,
                             hvm_load_cpu_msrs,
                             HVM_CPU_MSR_SIZE(msr_count_max) +
                                 sizeof(struct hvm_save_descriptor),
diff --git a/xen/arch/x86/hvm/i8254.c b/xen/arch/x86/hvm/i8254.c
index d51463d..e0d2255 100644
--- a/xen/arch/x86/hvm/i8254.c
+++ b/xen/arch/x86/hvm/i8254.c
@@ -438,7 +438,7 @@ static int pit_load(struct domain *d, hvm_domain_context_t 
*h)
     return 0;
 }
 
-HVM_REGISTER_SAVE_RESTORE(PIT, pit_save, NULL, pit_load, 1, HVMSR_PER_DOM);
+HVM_REGISTER_SAVE_RESTORE(PIT, pit_save, pit_load, 1, HVMSR_PER_DOM);
 
 void pit_reset(struct domain *d)
 {
diff --git a/xen/arch/x86/hvm/irq.c b/xen/arch/x86/hvm/irq.c
index a405e7f..b37275c 100644
--- a/xen/arch/x86/hvm/irq.c
+++ b/xen/arch/x86/hvm/irq.c
@@ -767,9 +767,9 @@ static int irq_load_link(struct domain *d, 
hvm_domain_context_t *h)
     return 0;
 }
 
-HVM_REGISTER_SAVE_RESTORE(PCI_IRQ, irq_save_pci, NULL, irq_load_pci,
+HVM_REGISTER_SAVE_RESTORE(PCI_IRQ, irq_save_pci, irq_load_pci,
                           1, HVMSR_PER_DOM);
-HVM_REGISTER_SAVE_RESTORE(ISA_IRQ, irq_save_isa, NULL, irq_load_isa,
+HVM_REGISTER_SAVE_RESTORE(ISA_IRQ, irq_save_isa, irq_load_isa,
                           1, HVMSR_PER_DOM);
-HVM_REGISTER_SAVE_RESTORE(PCI_LINK, irq_save_link, NULL, irq_load_link,
+HVM_REGISTER_SAVE_RESTORE(PCI_LINK, irq_save_link, irq_load_link,
                           1, HVMSR_PER_DOM);
diff --git a/xen/arch/x86/hvm/mtrr.c b/xen/arch/x86/hvm/mtrr.c
index 5b612b7..37f9ff0 100644
--- a/xen/arch/x86/hvm/mtrr.c
+++ b/xen/arch/x86/hvm/mtrr.c
@@ -808,7 +808,7 @@ static int hvm_load_mtrr_msr(struct domain *d, 
hvm_domain_context_t *h)
     return 0;
 }
 
-HVM_REGISTER_SAVE_RESTORE(MTRR, hvm_save_mtrr_msr, NULL,
+HVM_REGISTER_SAVE_RESTORE(MTRR, hvm_save_mtrr_msr,
                           hvm_load_mtrr_msr, 1, HVMSR_PER_VCPU);
 
 void memory_type_changed(struct domain *d)
diff --git a/xen/arch/x86/hvm/pmtimer.c b/xen/arch/x86/hvm/pmtimer.c
index 461d2df..d8dcbc2 100644
--- a/xen/arch/x86/hvm/pmtimer.c
+++ b/xen/arch/x86/hvm/pmtimer.c
@@ -310,7 +310,7 @@ static int acpi_load(struct domain *d, hvm_domain_context_t 
*h)
     return 0;
 }
 
-HVM_REGISTER_SAVE_RESTORE(PMTIMER, acpi_save, NULL, acpi_load,
+HVM_REGISTER_SAVE_RESTORE(PMTIMER, acpi_save, acpi_load,
                           1, HVMSR_PER_DOM);
 
 int pmtimer_change_ioport(struct domain *d, unsigned int version)
diff --git a/xen/arch/x86/hvm/rtc.c b/xen/arch/x86/hvm/rtc.c
index ea2fbd3..58b70fc 100644
--- a/xen/arch/x86/hvm/rtc.c
+++ b/xen/arch/x86/hvm/rtc.c
@@ -784,7 +784,7 @@ static int rtc_load(struct domain *d, hvm_domain_context_t 
*h)
     return 0;
 }
 
-HVM_REGISTER_SAVE_RESTORE(RTC, rtc_save, NULL, rtc_load, 1, HVMSR_PER_DOM);
+HVM_REGISTER_SAVE_RESTORE(RTC, rtc_save, rtc_load, 1, HVMSR_PER_DOM);
 
 void rtc_reset(struct domain *d)
 {
diff --git a/xen/arch/x86/hvm/save.c b/xen/arch/x86/hvm/save.c
index 1230f0e..785a7fc 100644
--- a/xen/arch/x86/hvm/save.c
+++ b/xen/arch/x86/hvm/save.c
@@ -85,18 +85,16 @@ int arch_hvm_load(struct domain *d, struct hvm_save_header 
*hdr)
 /* List of handlers for various HVM save and restore types */
 static struct {
     hvm_save_handler save;
-    hvm_save_one_handler save_one;
     hvm_load_handler load;
     const char *name;
     size_t size;
     int kind;
-} hvm_sr_handlers[HVM_SAVE_CODE_MAX + 1] = { {NULL, NULL, NULL, "<?>"}, };
+} hvm_sr_handlers[HVM_SAVE_CODE_MAX + 1] = { {NULL, NULL, "<?>"}, };
 
 /* Init-time function to add entries to that list */
 void __init hvm_register_savevm(uint16_t typecode,
                                 const char *name,
                                 hvm_save_handler save_state,
-                                hvm_save_one_handler save_one,
                                 hvm_load_handler load_state,
                                 size_t size, int kind)
 {
@@ -104,7 +102,6 @@ void __init hvm_register_savevm(uint16_t typecode,
     ASSERT(hvm_sr_handlers[typecode].save == NULL);
     ASSERT(hvm_sr_handlers[typecode].load == NULL);
     hvm_sr_handlers[typecode].save = save_state;
-    hvm_sr_handlers[typecode].save_one = save_one;
     hvm_sr_handlers[typecode].load = load_state;
     hvm_sr_handlers[typecode].name = name;
     hvm_sr_handlers[typecode].size = size;
@@ -170,13 +167,8 @@ int hvm_save_one(struct domain *d, unsigned int typecode, 
unsigned int instance,
 
     if ( is_single_instance )
     {
-        if ( hvm_sr_handlers[typecode].save_one != NULL )
-            rv = hvm_sr_handlers[typecode].save_one(d->vcpu[instance],
-                                                    &ctxt);
-        else
-            rv = hvm_sr_handlers[typecode].save(d->vcpu[instance], &ctxt);
-
-        if ( rv != 0 )
+        if ( (rv = hvm_sr_handlers[typecode].save(d->vcpu[instance],
+                                                  &ctxt)) != 0 )
         {
             printk(XENLOG_G_ERR "HVM%d save: failed to save type %"PRIu16" 
(%d)\n",
                    d->domain_id, typecode, rv);
diff --git a/xen/arch/x86/hvm/vioapic.c b/xen/arch/x86/hvm/vioapic.c
index cec4b1b..86d02cf 100644
--- a/xen/arch/x86/hvm/vioapic.c
+++ b/xen/arch/x86/hvm/vioapic.c
@@ -602,7 +602,7 @@ static int ioapic_load(struct domain *d, 
hvm_domain_context_t *h)
     return hvm_load_entry(IOAPIC, h, &s->domU);
 }
 
-HVM_REGISTER_SAVE_RESTORE(IOAPIC, ioapic_save, NULL, ioapic_load, 1, 
HVMSR_PER_DOM);
+HVM_REGISTER_SAVE_RESTORE(IOAPIC, ioapic_save, ioapic_load, 1, HVMSR_PER_DOM);
 
 void vioapic_reset(struct domain *d)
 {
diff --git a/xen/arch/x86/hvm/viridian.c b/xen/arch/x86/hvm/viridian.c
index f5de4f1..ca1592c 100644
--- a/xen/arch/x86/hvm/viridian.c
+++ b/xen/arch/x86/hvm/viridian.c
@@ -1024,7 +1024,7 @@ static int viridian_load_domain_ctxt(struct domain *d, 
hvm_domain_context_t *h)
     return 0;
 }
 
-HVM_REGISTER_SAVE_RESTORE(VIRIDIAN_DOMAIN, viridian_save_domain_ctxt, NULL,
+HVM_REGISTER_SAVE_RESTORE(VIRIDIAN_DOMAIN, viridian_save_domain_ctxt,
                           viridian_load_domain_ctxt, 1, HVMSR_PER_DOM);
 
 static int viridian_save_vcpu_ctxt(struct vcpu *v, hvm_domain_context_t *h)
@@ -1074,7 +1074,6 @@ static int viridian_load_vcpu_ctxt(struct domain *d, 
hvm_domain_context_t *h)
 }
 
 HVM_REGISTER_SAVE_RESTORE(VIRIDIAN_VCPU, viridian_save_vcpu_ctxt,
-                          NULL,
                           viridian_load_vcpu_ctxt, 1, HVMSR_PER_VCPU);
 
 static int __init parse_viridian_version(const char *arg)
diff --git a/xen/arch/x86/hvm/vlapic.c b/xen/arch/x86/hvm/vlapic.c
index 20d2b3e..8dc33b5 100644
--- a/xen/arch/x86/hvm/vlapic.c
+++ b/xen/arch/x86/hvm/vlapic.c
@@ -1561,9 +1561,9 @@ static int lapic_load_regs(struct domain *d, 
hvm_domain_context_t *h)
     return 0;
 }
 
-HVM_REGISTER_SAVE_RESTORE(LAPIC, lapic_save_hidden, NULL, lapic_load_hidden,
+HVM_REGISTER_SAVE_RESTORE(LAPIC, lapic_save_hidden, lapic_load_hidden,
                           1, HVMSR_PER_VCPU);
-HVM_REGISTER_SAVE_RESTORE(LAPIC_REGS, lapic_save_regs, NULL, lapic_load_regs,
+HVM_REGISTER_SAVE_RESTORE(LAPIC_REGS, lapic_save_regs, lapic_load_regs,
                           1, HVMSR_PER_VCPU);
 
 int vlapic_init(struct vcpu *v)
diff --git a/xen/arch/x86/hvm/vpic.c b/xen/arch/x86/hvm/vpic.c
index e03d8cf..bad5066 100644
--- a/xen/arch/x86/hvm/vpic.c
+++ b/xen/arch/x86/hvm/vpic.c
@@ -412,7 +412,7 @@ static int vpic_load(struct domain *d, hvm_domain_context_t 
*h)
     return 0;
 }
 
-HVM_REGISTER_SAVE_RESTORE(PIC, vpic_save, NULL, vpic_load, 2, HVMSR_PER_DOM);
+HVM_REGISTER_SAVE_RESTORE(PIC, vpic_save, vpic_load, 2, HVMSR_PER_DOM);
 
 void vpic_reset(struct domain *d)
 {
diff --git a/xen/include/asm-x86/hvm/save.h b/xen/include/asm-x86/hvm/save.h
index e64b4df..f7d31ad 100644
--- a/xen/include/asm-x86/hvm/save.h
+++ b/xen/include/asm-x86/hvm/save.h
@@ -97,8 +97,6 @@ static inline uint16_t hvm_load_instance(struct 
hvm_domain_context *h)
  * restoring.  Both return non-zero on error. */
 typedef int (*hvm_save_handler) (struct  vcpu *v,
                                  hvm_domain_context_t *h);
-typedef int (*hvm_save_one_handler)(struct  vcpu *v,
-                                    hvm_domain_context_t *h);
 typedef int (*hvm_load_handler) (struct domain *d,
                                  hvm_domain_context_t *h);
 
@@ -107,7 +105,6 @@ typedef int (*hvm_load_handler) (struct domain *d,
 void hvm_register_savevm(uint16_t typecode,
                          const char *name, 
                          hvm_save_handler save_state,
-                         hvm_save_one_handler save_one,
                          hvm_load_handler load_state,
                          size_t size, int kind);
 
@@ -117,13 +114,12 @@ void hvm_register_savevm(uint16_t typecode,
 
 /* Syntactic sugar around that function: specify the max number of
  * saves, and this calculates the size of buffer needed */
-#define HVM_REGISTER_SAVE_RESTORE(_x, _save, _save_one, _load, _num, _k)  \
+#define HVM_REGISTER_SAVE_RESTORE(_x, _save, _load, _num, _k)             \
 static int __init __hvm_register_##_x##_save_and_restore(void)            \
 {                                                                         \
     hvm_register_savevm(HVM_SAVE_CODE(_x),                                \
                         #_x,                                              \
                         &_save,                                           \
-                        _save_one,                                        \
                         &_load,                                           \
                         (_num) * (HVM_SAVE_LENGTH(_x)                     \
                                   + sizeof (struct hvm_save_descriptor)), \
-- 
2.7.4


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