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-rw-r--r--arch/ia64/include/asm/kvm_host.h192
-rw-r--r--arch/ia64/kvm/kvm-ia64.c60
-rw-r--r--arch/ia64/kvm/kvm_minstate.h4
-rw-r--r--arch/ia64/kvm/misc.h3
-rw-r--r--arch/ia64/kvm/vcpu.c5
-rw-r--r--arch/ia64/kvm/vtlb.c4
6 files changed, 161 insertions, 107 deletions
diff --git a/arch/ia64/include/asm/kvm_host.h b/arch/ia64/include/asm/kvm_host.h
index c60d324da540..678e2646a500 100644
--- a/arch/ia64/include/asm/kvm_host.h
+++ b/arch/ia64/include/asm/kvm_host.h
@@ -23,17 +23,6 @@
#ifndef __ASM_KVM_HOST_H
#define __ASM_KVM_HOST_H
-
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/kvm.h>
-#include <linux/kvm_para.h>
-#include <linux/kvm_types.h>
-
-#include <asm/pal.h>
-#include <asm/sal.h>
-
-#define KVM_MAX_VCPUS 4
#define KVM_MEMORY_SLOTS 32
/* memory slots that does not exposed to userspace */
#define KVM_PRIVATE_MEM_SLOTS 4
@@ -52,68 +41,127 @@
#define EXIT_REASON_PTC_G 8
/*Define vmm address space and vm data space.*/
-#define KVM_VMM_SIZE (16UL<<20)
+#define KVM_VMM_SIZE (__IA64_UL_CONST(16)<<20)
#define KVM_VMM_SHIFT 24
-#define KVM_VMM_BASE 0xD000000000000000UL
-#define VMM_SIZE (8UL<<20)
+#define KVM_VMM_BASE 0xD000000000000000
+#define VMM_SIZE (__IA64_UL_CONST(8)<<20)
/*
* Define vm_buffer, used by PAL Services, base address.
- * Note: vmbuffer is in the VMM-BLOCK, the size must be < 8M
+ * Note: vm_buffer is in the VMM-BLOCK, the size must be < 8M
*/
#define KVM_VM_BUFFER_BASE (KVM_VMM_BASE + VMM_SIZE)
-#define KVM_VM_BUFFER_SIZE (8UL<<20)
-
-/*Define Virtual machine data layout.*/
-#define KVM_VM_DATA_SHIFT 24
-#define KVM_VM_DATA_SIZE (1UL << KVM_VM_DATA_SHIFT)
-#define KVM_VM_DATA_BASE (KVM_VMM_BASE + KVM_VMM_SIZE)
-
-
-#define KVM_P2M_BASE KVM_VM_DATA_BASE
-#define KVM_P2M_OFS 0
-#define KVM_P2M_SIZE (8UL << 20)
-
-#define KVM_VHPT_BASE (KVM_P2M_BASE + KVM_P2M_SIZE)
-#define KVM_VHPT_OFS KVM_P2M_SIZE
-#define KVM_VHPT_BLOCK_SIZE (2UL << 20)
-#define VHPT_SHIFT 18
-#define VHPT_SIZE (1UL << VHPT_SHIFT)
-#define VHPT_NUM_ENTRIES (1<<(VHPT_SHIFT-5))
-
-#define KVM_VTLB_BASE (KVM_VHPT_BASE+KVM_VHPT_BLOCK_SIZE)
-#define KVM_VTLB_OFS (KVM_VHPT_OFS+KVM_VHPT_BLOCK_SIZE)
-#define KVM_VTLB_BLOCK_SIZE (1UL<<20)
-#define VTLB_SHIFT 17
-#define VTLB_SIZE (1UL<<VTLB_SHIFT)
-#define VTLB_NUM_ENTRIES (1<<(VTLB_SHIFT-5))
-
-#define KVM_VPD_BASE (KVM_VTLB_BASE+KVM_VTLB_BLOCK_SIZE)
-#define KVM_VPD_OFS (KVM_VTLB_OFS+KVM_VTLB_BLOCK_SIZE)
-#define KVM_VPD_BLOCK_SIZE (2UL<<20)
-#define VPD_SHIFT 16
-#define VPD_SIZE (1UL<<VPD_SHIFT)
-
-#define KVM_VCPU_BASE (KVM_VPD_BASE+KVM_VPD_BLOCK_SIZE)
-#define KVM_VCPU_OFS (KVM_VPD_OFS+KVM_VPD_BLOCK_SIZE)
-#define KVM_VCPU_BLOCK_SIZE (2UL<<20)
-#define VCPU_SHIFT 18
-#define VCPU_SIZE (1UL<<VCPU_SHIFT)
-#define MAX_VCPU_NUM KVM_VCPU_BLOCK_SIZE/VCPU_SIZE
-
-#define KVM_VM_BASE (KVM_VCPU_BASE+KVM_VCPU_BLOCK_SIZE)
-#define KVM_VM_OFS (KVM_VCPU_OFS+KVM_VCPU_BLOCK_SIZE)
-#define KVM_VM_BLOCK_SIZE (1UL<<19)
-
-#define KVM_MEM_DIRTY_LOG_BASE (KVM_VM_BASE+KVM_VM_BLOCK_SIZE)
-#define KVM_MEM_DIRTY_LOG_OFS (KVM_VM_OFS+KVM_VM_BLOCK_SIZE)
-#define KVM_MEM_DIRTY_LOG_SIZE (1UL<<19)
-
-/* Get vpd, vhpt, tlb, vcpu, base*/
-#define VPD_ADDR(n) (KVM_VPD_BASE+n*VPD_SIZE)
-#define VHPT_ADDR(n) (KVM_VHPT_BASE+n*VHPT_SIZE)
-#define VTLB_ADDR(n) (KVM_VTLB_BASE+n*VTLB_SIZE)
-#define VCPU_ADDR(n) (KVM_VCPU_BASE+n*VCPU_SIZE)
+#define KVM_VM_BUFFER_SIZE (__IA64_UL_CONST(8)<<20)
+
+/*
+ * kvm guest's data area looks as follow:
+ *
+ * +----------------------+ ------- KVM_VM_DATA_SIZE
+ * | vcpu[n]'s data | | ___________________KVM_STK_OFFSET
+ * | | | / |
+ * | .......... | | /vcpu's struct&stack |
+ * | .......... | | /---------------------|---- 0
+ * | vcpu[5]'s data | | / vpd |
+ * | vcpu[4]'s data | |/-----------------------|
+ * | vcpu[3]'s data | / vtlb |
+ * | vcpu[2]'s data | /|------------------------|
+ * | vcpu[1]'s data |/ | vhpt |
+ * | vcpu[0]'s data |____________________________|
+ * +----------------------+ |
+ * | memory dirty log | |
+ * +----------------------+ |
+ * | vm's data struct | |
+ * +----------------------+ |
+ * | | |
+ * | | |
+ * | | |
+ * | | |
+ * | | |
+ * | | |
+ * | | |
+ * | vm's p2m table | |
+ * | | |
+ * | | |
+ * | | | |
+ * vm's data->| | | |
+ * +----------------------+ ------- 0
+ * To support large memory, needs to increase the size of p2m.
+ * To support more vcpus, needs to ensure it has enough space to
+ * hold vcpus' data.
+ */
+
+#define KVM_VM_DATA_SHIFT 26
+#define KVM_VM_DATA_SIZE (__IA64_UL_CONST(1) << KVM_VM_DATA_SHIFT)
+#define KVM_VM_DATA_BASE (KVM_VMM_BASE + KVM_VM_DATA_SIZE)
+
+#define KVM_P2M_BASE KVM_VM_DATA_BASE
+#define KVM_P2M_SIZE (__IA64_UL_CONST(24) << 20)
+
+#define VHPT_SHIFT 16
+#define VHPT_SIZE (__IA64_UL_CONST(1) << VHPT_SHIFT)
+#define VHPT_NUM_ENTRIES (__IA64_UL_CONST(1) << (VHPT_SHIFT-5))
+
+#define VTLB_SHIFT 16
+#define VTLB_SIZE (__IA64_UL_CONST(1) << VTLB_SHIFT)
+#define VTLB_NUM_ENTRIES (1UL << (VHPT_SHIFT-5))
+
+#define VPD_SHIFT 16
+#define VPD_SIZE (__IA64_UL_CONST(1) << VPD_SHIFT)
+
+#define VCPU_STRUCT_SHIFT 16
+#define VCPU_STRUCT_SIZE (__IA64_UL_CONST(1) << VCPU_STRUCT_SHIFT)
+
+#define KVM_STK_OFFSET VCPU_STRUCT_SIZE
+
+#define KVM_VM_STRUCT_SHIFT 19
+#define KVM_VM_STRUCT_SIZE (__IA64_UL_CONST(1) << KVM_VM_STRUCT_SHIFT)
+
+#define KVM_MEM_DIRY_LOG_SHIFT 19
+#define KVM_MEM_DIRTY_LOG_SIZE (__IA64_UL_CONST(1) << KVM_MEM_DIRY_LOG_SHIFT)
+
+#ifndef __ASSEMBLY__
+
+/*Define the max vcpus and memory for Guests.*/
+#define KVM_MAX_VCPUS (KVM_VM_DATA_SIZE - KVM_P2M_SIZE - KVM_VM_STRUCT_SIZE -\
+ KVM_MEM_DIRTY_LOG_SIZE) / sizeof(struct kvm_vcpu_data)
+#define KVM_MAX_MEM_SIZE (KVM_P2M_SIZE >> 3 << PAGE_SHIFT)
+
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/kvm.h>
+#include <linux/kvm_para.h>
+#include <linux/kvm_types.h>
+
+#include <asm/pal.h>
+#include <asm/sal.h>
+#include <asm/page.h>
+
+struct kvm_vcpu_data {
+ char vcpu_vhpt[VHPT_SIZE];
+ char vcpu_vtlb[VTLB_SIZE];
+ char vcpu_vpd[VPD_SIZE];
+ char vcpu_struct[VCPU_STRUCT_SIZE];
+};
+
+struct kvm_vm_data {
+ char kvm_p2m[KVM_P2M_SIZE];
+ char kvm_vm_struct[KVM_VM_STRUCT_SIZE];
+ char kvm_mem_dirty_log[KVM_MEM_DIRTY_LOG_SIZE];
+ struct kvm_vcpu_data vcpu_data[KVM_MAX_VCPUS];
+};
+
+#define VCPU_BASE(n) KVM_VM_DATA_BASE + \
+ offsetof(struct kvm_vm_data, vcpu_data[n])
+#define VM_BASE KVM_VM_DATA_BASE + \
+ offsetof(struct kvm_vm_data, kvm_vm_struct)
+#define KVM_MEM_DIRTY_LOG_BASE KVM_VM_DATA_BASE + \
+ offsetof(struct kvm_vm_data, kvm_mem_dirty_log)
+
+#define VHPT_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vhpt))
+#define VTLB_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vtlb))
+#define VPD_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vpd))
+#define VCPU_STRUCT_BASE(n) (VCPU_BASE(n) + \
+ offsetof(struct kvm_vcpu_data, vcpu_struct))
/*IO section definitions*/
#define IOREQ_READ 1
@@ -403,14 +451,13 @@ struct kvm_sal_data {
};
struct kvm_arch {
+ spinlock_t dirty_log_lock;
+
unsigned long vm_base;
unsigned long metaphysical_rr0;
unsigned long metaphysical_rr4;
unsigned long vmm_init_rr;
- unsigned long vhpt_base;
- unsigned long vtlb_base;
- unsigned long vpd_base;
- spinlock_t dirty_log_lock;
+
struct kvm_ioapic *vioapic;
struct kvm_vm_stat stat;
struct kvm_sal_data rdv_sal_data;
@@ -512,7 +559,7 @@ struct kvm_pt_regs {
static inline struct kvm_pt_regs *vcpu_regs(struct kvm_vcpu *v)
{
- return (struct kvm_pt_regs *) ((unsigned long) v + IA64_STK_OFFSET) - 1;
+ return (struct kvm_pt_regs *) ((unsigned long) v + KVM_STK_OFFSET) - 1;
}
typedef int kvm_vmm_entry(void);
@@ -531,5 +578,6 @@ int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
void kvm_sal_emul(struct kvm_vcpu *vcpu);
static inline void kvm_inject_nmi(struct kvm_vcpu *vcpu) {}
+#endif /* __ASSEMBLY__*/
#endif
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index af1464f7a6ad..43e45f6afcda 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -698,27 +698,24 @@ out:
return r;
}
-/*
- * Allocate 16M memory for every vm to hold its specific data.
- * Its memory map is defined in kvm_host.h.
- */
static struct kvm *kvm_alloc_kvm(void)
{
struct kvm *kvm;
uint64_t vm_base;
+ BUG_ON(sizeof(struct kvm) > KVM_VM_STRUCT_SIZE);
+
vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE));
if (!vm_base)
return ERR_PTR(-ENOMEM);
- printk(KERN_DEBUG"kvm: VM data's base Address:0x%lx\n", vm_base);
- /* Zero all pages before use! */
memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
-
- kvm = (struct kvm *)(vm_base + KVM_VM_OFS);
+ kvm = (struct kvm *)(vm_base +
+ offsetof(struct kvm_vm_data, kvm_vm_struct));
kvm->arch.vm_base = vm_base;
+ printk(KERN_DEBUG"kvm: vm's data area:0x%lx\n", vm_base);
return kvm;
}
@@ -760,21 +757,12 @@ static void kvm_build_io_pmt(struct kvm *kvm)
static void kvm_init_vm(struct kvm *kvm)
{
- long vm_base;
-
BUG_ON(!kvm);
kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0;
kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4;
kvm->arch.vmm_init_rr = VMM_INIT_RR;
- vm_base = kvm->arch.vm_base;
- if (vm_base) {
- kvm->arch.vhpt_base = vm_base + KVM_VHPT_OFS;
- kvm->arch.vtlb_base = vm_base + KVM_VTLB_OFS;
- kvm->arch.vpd_base = vm_base + KVM_VPD_OFS;
- }
-
/*
*Fill P2M entries for MMIO/IO ranges
*/
@@ -864,7 +852,7 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
goto out;
r = copy_from_user(vcpu + 1, regs->saved_stack +
sizeof(struct kvm_vcpu),
- IA64_STK_OFFSET - sizeof(struct kvm_vcpu));
+ KVM_STK_OFFSET - sizeof(struct kvm_vcpu));
if (r)
goto out;
vcpu->arch.exit_data =
@@ -1166,10 +1154,11 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
/*Set entry address for first run.*/
regs->cr_iip = PALE_RESET_ENTRY;
- /*Initilize itc offset for vcpus*/
+ /*Initialize itc offset for vcpus*/
itc_offset = 0UL - ia64_getreg(_IA64_REG_AR_ITC);
- for (i = 0; i < MAX_VCPU_NUM; i++) {
- v = (struct kvm_vcpu *)((char *)vcpu + VCPU_SIZE * i);
+ for (i = 0; i < KVM_MAX_VCPUS; i++) {
+ v = (struct kvm_vcpu *)((char *)vcpu +
+ sizeof(struct kvm_vcpu_data) * i);
v->arch.itc_offset = itc_offset;
v->arch.last_itc = 0;
}
@@ -1183,7 +1172,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
vcpu->arch.apic->vcpu = vcpu;
p_ctx->gr[1] = 0;
- p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + IA64_STK_OFFSET);
+ p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET);
p_ctx->gr[13] = (unsigned long)vmm_vcpu;
p_ctx->psr = 0x1008522000UL;
p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/
@@ -1218,12 +1207,12 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
vcpu->arch.hlt_timer.function = hlt_timer_fn;
vcpu->arch.last_run_cpu = -1;
- vcpu->arch.vpd = (struct vpd *)VPD_ADDR(vcpu->vcpu_id);
+ vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id);
vcpu->arch.vsa_base = kvm_vsa_base;
vcpu->arch.__gp = kvm_vmm_gp;
vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock);
- vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_ADDR(vcpu->vcpu_id);
- vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_ADDR(vcpu->vcpu_id);
+ vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id);
+ vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id);
init_ptce_info(vcpu);
r = 0;
@@ -1273,12 +1262,22 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
int r;
int cpu;
+ BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2);
+
+ r = -EINVAL;
+ if (id >= KVM_MAX_VCPUS) {
+ printk(KERN_ERR"kvm: Can't configure vcpus > %ld",
+ KVM_MAX_VCPUS);
+ goto fail;
+ }
+
r = -ENOMEM;
if (!vm_base) {
printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id);
goto fail;
}
- vcpu = (struct kvm_vcpu *)(vm_base + KVM_VCPU_OFS + VCPU_SIZE * id);
+ vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data,
+ vcpu_data[id].vcpu_struct));
vcpu->kvm = kvm;
cpu = get_cpu();
@@ -1396,7 +1395,7 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
sizeof(union context));
if (r)
goto out;
- r = copy_to_user(regs->saved_stack, (void *)vcpu, IA64_STK_OFFSET);
+ r = copy_to_user(regs->saved_stack, (void *)vcpu, KVM_STK_OFFSET);
if (r)
goto out;
SAVE_REGS(mp_state);
@@ -1457,6 +1456,9 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
struct kvm_memory_slot *memslot = &kvm->memslots[mem->slot];
unsigned long base_gfn = memslot->base_gfn;
+ if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT))
+ return -ENOMEM;
+
for (i = 0; i < npages; i++) {
pfn = gfn_to_pfn(kvm, base_gfn + i);
if (!kvm_is_mmio_pfn(pfn)) {
@@ -1631,8 +1633,8 @@ static int kvm_ia64_sync_dirty_log(struct kvm *kvm,
struct kvm_memory_slot *memslot;
int r, i;
long n, base;
- unsigned long *dirty_bitmap = (unsigned long *)((void *)kvm - KVM_VM_OFS
- + KVM_MEM_DIRTY_LOG_OFS);
+ unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base +
+ offsetof(struct kvm_vm_data, kvm_mem_dirty_log));
r = -EINVAL;
if (log->slot >= KVM_MEMORY_SLOTS)
diff --git a/arch/ia64/kvm/kvm_minstate.h b/arch/ia64/kvm/kvm_minstate.h
index 2cc41d17cf99..b2bcaa2787aa 100644
--- a/arch/ia64/kvm/kvm_minstate.h
+++ b/arch/ia64/kvm/kvm_minstate.h
@@ -24,6 +24,8 @@
#include <asm/asmmacro.h>
#include <asm/types.h>
#include <asm/kregs.h>
+#include <asm/kvm_host.h>
+
#include "asm-offsets.h"
#define KVM_MINSTATE_START_SAVE_MIN \
@@ -33,7 +35,7 @@
addl r22 = VMM_RBS_OFFSET,r1; /* compute base of RBS */ \
;; \
lfetch.fault.excl.nt1 [r22]; \
- addl r1 = IA64_STK_OFFSET-VMM_PT_REGS_SIZE,r1; /* compute base of memory stack */ \
+ addl r1 = KVM_STK_OFFSET-VMM_PT_REGS_SIZE, r1; \
mov r23 = ar.bspstore; /* save ar.bspstore */ \
;; \
mov ar.bspstore = r22; /* switch to kernel RBS */\
diff --git a/arch/ia64/kvm/misc.h b/arch/ia64/kvm/misc.h
index e585c4607344..dd979e00b574 100644
--- a/arch/ia64/kvm/misc.h
+++ b/arch/ia64/kvm/misc.h
@@ -27,7 +27,8 @@
*/
static inline uint64_t *kvm_host_get_pmt(struct kvm *kvm)
{
- return (uint64_t *)(kvm->arch.vm_base + KVM_P2M_OFS);
+ return (uint64_t *)(kvm->arch.vm_base +
+ offsetof(struct kvm_vm_data, kvm_p2m));
}
static inline void kvm_set_pmt_entry(struct kvm *kvm, gfn_t gfn,
diff --git a/arch/ia64/kvm/vcpu.c b/arch/ia64/kvm/vcpu.c
index e44027ce5667..a528d70a820c 100644
--- a/arch/ia64/kvm/vcpu.c
+++ b/arch/ia64/kvm/vcpu.c
@@ -816,8 +816,9 @@ static void vcpu_set_itc(struct kvm_vcpu *vcpu, u64 val)
unsigned long vitv = VCPU(vcpu, itv);
if (vcpu->vcpu_id == 0) {
- for (i = 0; i < MAX_VCPU_NUM; i++) {
- v = (struct kvm_vcpu *)((char *)vcpu + VCPU_SIZE * i);
+ for (i = 0; i < KVM_MAX_VCPUS; i++) {
+ v = (struct kvm_vcpu *)((char *)vcpu +
+ sizeof(struct kvm_vcpu_data) * i);
VMX(v, itc_offset) = itc_offset;
VMX(v, last_itc) = 0;
}
diff --git a/arch/ia64/kvm/vtlb.c b/arch/ia64/kvm/vtlb.c
index e22b93361e08..6b6307a3bd55 100644
--- a/arch/ia64/kvm/vtlb.c
+++ b/arch/ia64/kvm/vtlb.c
@@ -183,8 +183,8 @@ void mark_pages_dirty(struct kvm_vcpu *v, u64 pte, u64 ps)
u64 i, dirty_pages = 1;
u64 base_gfn = (pte&_PAGE_PPN_MASK) >> PAGE_SHIFT;
spinlock_t *lock = __kvm_va(v->arch.dirty_log_lock_pa);
- void *dirty_bitmap = (void *)v - (KVM_VCPU_OFS + v->vcpu_id * VCPU_SIZE)
- + KVM_MEM_DIRTY_LOG_OFS;
+ void *dirty_bitmap = (void *)KVM_MEM_DIRTY_LOG_BASE;
+
dirty_pages <<= ps <= PAGE_SHIFT ? 0 : ps - PAGE_SHIFT;
vmm_spin_lock(lock);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-21 13:48:03 +0000