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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [HVM] Replace relinquish_resources() destructor hook with
# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Node ID 8eb8c0085604f3671e062c8d7f0054b42a20986b
# Parent a910bf123e5875681d925ad9981129485b1c8eaa
[HVM] Replace relinquish_resources() destructor hook with
separate vcpu and domain destructors that are called at the
point the domain is finally destroyed.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
xen/arch/x86/domain.c | 14 +++++++++----
xen/arch/x86/hvm/hvm.c | 40 +++++++++++++++++++++++++++++--------
xen/arch/x86/hvm/svm/svm.c | 42 +++++----------------------------------
xen/arch/x86/hvm/svm/vmcb.c | 3 --
xen/arch/x86/hvm/vlapic.c | 17 ++++++++++++++-
xen/arch/x86/hvm/vmx/vmcs.c | 11 ----------
xen/arch/x86/hvm/vmx/vmx.c | 35 +++-----------------------------
xen/include/asm-x86/hvm/hvm.h | 13 ++++--------
xen/include/asm-x86/hvm/io.h | 1
xen/include/asm-x86/hvm/vlapic.h | 3 +-
10 files changed, 76 insertions(+), 103 deletions(-)
diff -r a910bf123e58 -r 8eb8c0085604 xen/arch/x86/domain.c
--- a/xen/arch/x86/domain.c Mon Nov 06 15:46:28 2006 +0000
+++ b/xen/arch/x86/domain.c Mon Nov 06 16:36:51 2006 +0000
@@ -235,7 +235,7 @@ int arch_domain_create(struct domain *d)
virt_to_page(d->shared_info), d, XENSHARE_writable);
}
- return hvm_domain_initialise(d);
+ return is_hvm_domain(d) ? hvm_domain_initialise(d) : 0;
fail:
free_xenheap_page(d->shared_info);
@@ -249,6 +249,15 @@ int arch_domain_create(struct domain *d)
void arch_domain_destroy(struct domain *d)
{
+ struct vcpu *v;
+
+ if ( is_hvm_domain(d) )
+ {
+ for_each_vcpu ( d, v )
+ hvm_vcpu_destroy(v);
+ hvm_domain_destroy(d);
+ }
+
shadow_final_teardown(d);
free_xenheap_pages(
@@ -974,9 +983,6 @@ void domain_relinquish_resources(struct
#endif
}
- if ( is_hvm_domain(d) )
- hvm_relinquish_guest_resources(d);
-
/* Tear down shadow mode stuff. */
shadow_teardown(d);
diff -r a910bf123e58 -r 8eb8c0085604 xen/arch/x86/hvm/hvm.c
--- a/xen/arch/x86/hvm/hvm.c Mon Nov 06 15:46:28 2006 +0000
+++ b/xen/arch/x86/hvm/hvm.c Mon Nov 06 16:36:51 2006 +0000
@@ -110,18 +110,10 @@ void hvm_do_resume(struct vcpu *v)
}
}
-void hvm_release_assist_channel(struct vcpu *v)
-{
- free_xen_event_channel(v, v->arch.hvm_vcpu.xen_port);
-}
-
int hvm_domain_initialise(struct domain *d)
{
struct hvm_domain *platform = &d->arch.hvm_domain;
int rc;
-
- if ( !is_hvm_domain(d) )
- return 0;
if ( !hvm_enabled )
{
@@ -146,6 +138,20 @@ int hvm_domain_initialise(struct domain
return 0;
}
+void hvm_domain_destroy(struct domain *d)
+{
+ kill_timer(&d->arch.hvm_domain.pl_time.periodic_tm.timer);
+ rtc_deinit(d);
+ pmtimer_deinit(d);
+
+ if ( d->arch.hvm_domain.shared_page_va )
+ unmap_domain_page_global(
+ (void *)d->arch.hvm_domain.shared_page_va);
+
+ if ( d->arch.hvm_domain.buffered_io_va )
+ unmap_domain_page_global((void *)d->arch.hvm_domain.buffered_io_va);
+}
+
int hvm_vcpu_initialise(struct vcpu *v)
{
struct hvm_domain *platform;
@@ -153,6 +159,12 @@ int hvm_vcpu_initialise(struct vcpu *v)
if ( (rc = hvm_funcs.vcpu_initialise(v)) != 0 )
return rc;
+
+ if ( (rc = vlapic_init(v)) != 0 )
+ {
+ hvm_funcs.vcpu_destroy(v);
+ return rc;
+ }
/* Create ioreq event channel. */
v->arch.hvm_vcpu.xen_port = alloc_unbound_xen_event_channel(v, 0);
@@ -160,6 +172,8 @@ int hvm_vcpu_initialise(struct vcpu *v)
get_vio(v->domain, v->vcpu_id)->vp_eport =
v->arch.hvm_vcpu.xen_port;
+ init_timer(&v->arch.hvm_vcpu.hlt_timer, hlt_timer_fn, v, v->processor);
+
if ( v->vcpu_id != 0 )
return 0;
@@ -176,6 +190,16 @@ int hvm_vcpu_initialise(struct vcpu *v)
hvm_set_guest_time(v, 0);
return 0;
+}
+
+void hvm_vcpu_destroy(struct vcpu *v)
+{
+ kill_timer(&v->arch.hvm_vcpu.hlt_timer);
+ vlapic_destroy(v);
+ hvm_funcs.vcpu_destroy(v);
+
+ /* Event channel is already freed by evtchn_destroy(). */
+ /*free_xen_event_channel(v, v->arch.hvm_vcpu.xen_port);*/
}
void pic_irq_request(void *data, int level)
diff -r a910bf123e58 -r 8eb8c0085604 xen/arch/x86/hvm/svm/svm.c
--- a/xen/arch/x86/hvm/svm/svm.c Mon Nov 06 15:46:28 2006 +0000
+++ b/xen/arch/x86/hvm/svm/svm.c Mon Nov 06 16:36:51 2006 +0000
@@ -61,7 +61,6 @@ extern int svm_dbg_on;
extern int svm_dbg_on;
void svm_dump_regs(const char *from, struct cpu_user_regs *regs);
-static void svm_relinquish_guest_resources(struct domain *d);
static int svm_do_vmmcall_reset_to_realmode(struct vcpu *v,
struct cpu_user_regs *regs);
@@ -777,6 +776,11 @@ static int svm_vcpu_initialise(struct vc
return 0;
}
+static void svm_vcpu_destroy(struct vcpu *v)
+{
+ destroy_vmcb(&v->arch.hvm_svm);
+}
+
int start_svm(void)
{
u32 eax, ecx, edx;
@@ -825,7 +829,7 @@ int start_svm(void)
hvm_funcs.disable = stop_svm;
hvm_funcs.vcpu_initialise = svm_vcpu_initialise;
- hvm_funcs.relinquish_guest_resources = svm_relinquish_guest_resources;
+ hvm_funcs.vcpu_destroy = svm_vcpu_destroy;
hvm_funcs.store_cpu_guest_regs = svm_store_cpu_guest_regs;
hvm_funcs.load_cpu_guest_regs = svm_load_cpu_guest_regs;
@@ -848,40 +852,6 @@ int start_svm(void)
hvm_enabled = 1;
return 1;
-}
-
-
-static void svm_relinquish_guest_resources(struct domain *d)
-{
- struct vcpu *v;
-
- for_each_vcpu ( d, v )
- {
- if ( !test_bit(_VCPUF_initialised, &v->vcpu_flags) )
- continue;
-
- destroy_vmcb(&v->arch.hvm_svm);
- kill_timer(&v->arch.hvm_vcpu.hlt_timer);
- if ( VLAPIC(v) != NULL )
- {
- kill_timer(&VLAPIC(v)->vlapic_timer);
- unmap_domain_page_global(VLAPIC(v)->regs);
- free_domheap_page(VLAPIC(v)->regs_page);
- xfree(VLAPIC(v));
- }
- hvm_release_assist_channel(v);
- }
-
- kill_timer(&d->arch.hvm_domain.pl_time.periodic_tm.timer);
- rtc_deinit(d);
- pmtimer_deinit(d);
-
- if ( d->arch.hvm_domain.shared_page_va )
- unmap_domain_page_global(
- (void *)d->arch.hvm_domain.shared_page_va);
-
- if ( d->arch.hvm_domain.buffered_io_va )
- unmap_domain_page_global((void *)d->arch.hvm_domain.buffered_io_va);
}
diff -r a910bf123e58 -r 8eb8c0085604 xen/arch/x86/hvm/svm/vmcb.c
--- a/xen/arch/x86/hvm/svm/vmcb.c Mon Nov 06 15:46:28 2006 +0000
+++ b/xen/arch/x86/hvm/svm/vmcb.c Mon Nov 06 16:36:51 2006 +0000
@@ -350,9 +350,6 @@ void svm_do_launch(struct vcpu *v)
clear_bit(ARCH_SVM_VMCB_ASSIGN_ASID, &v->arch.hvm_svm.flags);
if ( !asidpool_assign_next( vmcb, 0, core, core ))
BUG();
-
- vlapic_init(v);
- init_timer(&v->arch.hvm_vcpu.hlt_timer, hlt_timer_fn, v, v->processor);
vmcb->ldtr.sel = 0;
vmcb->ldtr.base = 0;
diff -r a910bf123e58 -r 8eb8c0085604 xen/arch/x86/hvm/vlapic.c
--- a/xen/arch/x86/hvm/vlapic.c Mon Nov 06 15:46:28 2006 +0000
+++ b/xen/arch/x86/hvm/vlapic.c Mon Nov 06 16:36:51 2006 +0000
@@ -1016,7 +1016,7 @@ static int vlapic_reset(struct vlapic *v
int vlapic_init(struct vcpu *v)
{
- struct vlapic *vlapic = NULL;
+ struct vlapic *vlapic;
HVM_DBG_LOG(DBG_LEVEL_VLAPIC, "vlapic_init %d", v->vcpu_id);
@@ -1047,3 +1047,18 @@ int vlapic_init(struct vcpu *v)
return 0;
}
+
+void vlapic_destroy(struct vcpu *v)
+{
+ struct vlapic *vlapic = VLAPIC(v);
+
+ if ( vlapic == NULL )
+ return;
+
+ VLAPIC(v) = NULL;
+
+ kill_timer(&vlapic->vlapic_timer);
+ unmap_domain_page_global(vlapic->regs);
+ free_domheap_page(vlapic->regs_page);
+ xfree(vlapic);
+}
diff -r a910bf123e58 -r 8eb8c0085604 xen/arch/x86/hvm/vmx/vmcs.c
--- a/xen/arch/x86/hvm/vmx/vmcs.c Mon Nov 06 15:46:28 2006 +0000
+++ b/xen/arch/x86/hvm/vmx/vmcs.c Mon Nov 06 16:36:51 2006 +0000
@@ -193,11 +193,7 @@ void vmx_vmcs_enter(struct vcpu *v)
{
/*
* NB. We must *always* run an HVM VCPU on its own VMCS, except for
- * vmx_vmcs_enter/exit critical regions. This leads to some TODOs:
- * 1. VMPTRLD as soon as we context-switch to a HVM VCPU.
- * 2. VMCS destruction needs to happen later (from domain_destroy()).
- * We can relax this a bit if a paused VCPU always commits its
- * architectural state to a software structure.
+ * vmx_vmcs_enter/exit critical regions.
*/
if ( v == current )
return;
@@ -416,11 +412,6 @@ static int construct_vmcs(struct vcpu *v
cr4 & ~(X86_CR4_PGE | X86_CR4_VMXE | X86_CR4_PAE);
error |= __vmwrite(CR4_READ_SHADOW, v->arch.hvm_vmx.cpu_shadow_cr4);
- /* XXX Move this out. */
- init_timer(&v->arch.hvm_vcpu.hlt_timer, hlt_timer_fn, v, v->processor);
- if ( vlapic_init(v) != 0 )
- return -1;
-
#ifdef __x86_64__
/* VLAPIC TPR optimisation. */
v->arch.hvm_vcpu.u.vmx.exec_control |= CPU_BASED_TPR_SHADOW;
diff -r a910bf123e58 -r 8eb8c0085604 xen/arch/x86/hvm/vmx/vmx.c
--- a/xen/arch/x86/hvm/vmx/vmx.c Mon Nov 06 15:46:28 2006 +0000
+++ b/xen/arch/x86/hvm/vmx/vmx.c Mon Nov 06 16:36:51 2006 +0000
@@ -74,36 +74,9 @@ static int vmx_vcpu_initialise(struct vc
return 0;
}
-static void vmx_relinquish_guest_resources(struct domain *d)
-{
- struct vcpu *v;
-
- for_each_vcpu ( d, v )
- {
- vmx_destroy_vmcs(v);
- if ( !test_bit(_VCPUF_initialised, &v->vcpu_flags) )
- continue;
- kill_timer(&v->arch.hvm_vcpu.hlt_timer);
- if ( VLAPIC(v) != NULL )
- {
- kill_timer(&VLAPIC(v)->vlapic_timer);
- unmap_domain_page_global(VLAPIC(v)->regs);
- free_domheap_page(VLAPIC(v)->regs_page);
- xfree(VLAPIC(v));
- }
- hvm_release_assist_channel(v);
- }
-
- kill_timer(&d->arch.hvm_domain.pl_time.periodic_tm.timer);
- rtc_deinit(d);
- pmtimer_deinit(d);
-
- if ( d->arch.hvm_domain.shared_page_va )
- unmap_domain_page_global(
- (void *)d->arch.hvm_domain.shared_page_va);
-
- if ( d->arch.hvm_domain.buffered_io_va )
- unmap_domain_page_global((void *)d->arch.hvm_domain.buffered_io_va);
+static void vmx_vcpu_destroy(struct vcpu *v)
+{
+ vmx_destroy_vmcs(v);
}
#ifdef __x86_64__
@@ -674,7 +647,7 @@ static void vmx_setup_hvm_funcs(void)
hvm_funcs.disable = stop_vmx;
hvm_funcs.vcpu_initialise = vmx_vcpu_initialise;
- hvm_funcs.relinquish_guest_resources = vmx_relinquish_guest_resources;
+ hvm_funcs.vcpu_destroy = vmx_vcpu_destroy;
hvm_funcs.store_cpu_guest_regs = vmx_store_cpu_guest_regs;
hvm_funcs.load_cpu_guest_regs = vmx_load_cpu_guest_regs;
diff -r a910bf123e58 -r 8eb8c0085604 xen/include/asm-x86/hvm/hvm.h
--- a/xen/include/asm-x86/hvm/hvm.h Mon Nov 06 15:46:28 2006 +0000
+++ b/xen/include/asm-x86/hvm/hvm.h Mon Nov 06 16:36:51 2006 +0000
@@ -33,10 +33,10 @@ struct hvm_function_table {
void (*disable)(void);
/*
- * Initialize/relinguish HVM guest resources
+ * Initialise/destroy HVM VCPU resources
*/
int (*vcpu_initialise)(struct vcpu *v);
- void (*relinquish_guest_resources)(struct domain *d);
+ void (*vcpu_destroy)(struct vcpu *v);
/*
* Store and load guest state:
@@ -92,13 +92,10 @@ hvm_disable(void)
}
int hvm_domain_initialise(struct domain *d);
+void hvm_domain_destroy(struct domain *d);
+
int hvm_vcpu_initialise(struct vcpu *v);
-
-static inline void
-hvm_relinquish_guest_resources(struct domain *d)
-{
- hvm_funcs.relinquish_guest_resources(d);
-}
+void hvm_vcpu_destroy(struct vcpu *v);
static inline void
hvm_store_cpu_guest_regs(
diff -r a910bf123e58 -r 8eb8c0085604 xen/include/asm-x86/hvm/io.h
--- a/xen/include/asm-x86/hvm/io.h Mon Nov 06 15:46:28 2006 +0000
+++ b/xen/include/asm-x86/hvm/io.h Mon Nov 06 16:36:51 2006 +0000
@@ -151,7 +151,6 @@ extern void hvm_pic_assist(struct vcpu *
extern void hvm_pic_assist(struct vcpu *v);
extern int cpu_get_interrupt(struct vcpu *v, int *type);
extern int cpu_has_pending_irq(struct vcpu *v);
-extern void hvm_release_assist_channel(struct vcpu *v);
// XXX - think about this, maybe use bit 30 of the mfn to signify an MMIO
frame.
#define mmio_space(gpa) (!VALID_MFN(get_mfn_from_gpfn((gpa) >> PAGE_SHIFT)))
diff -r a910bf123e58 -r 8eb8c0085604 xen/include/asm-x86/hvm/vlapic.h
--- a/xen/include/asm-x86/hvm/vlapic.h Mon Nov 06 15:46:28 2006 +0000
+++ b/xen/include/asm-x86/hvm/vlapic.h Mon Nov 06 16:36:51 2006 +0000
@@ -77,7 +77,8 @@ int vlapic_find_highest_irr(struct vlapi
int cpu_get_apic_interrupt(struct vcpu *v, int *mode);
-int vlapic_init(struct vcpu *vc);
+int vlapic_init(struct vcpu *v);
+void vlapic_destroy(struct vcpu *v);
void vlapic_msr_set(struct vlapic *vlapic, uint64_t value);
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