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-rw-r--r--hw/char/serial.c6
-rw-r--r--hw/dma/i8257.c4
-rw-r--r--hw/i386/kvm/clock.c53
-rw-r--r--hw/i386/kvm/i8254.c3
-rw-r--r--hw/i386/kvmvapic.c11
5 files changed, 69 insertions, 8 deletions
diff --git a/hw/char/serial.c b/hw/char/serial.c
index a668249049..ebcacdc872 100644
--- a/hw/char/serial.c
+++ b/hw/char/serial.c
@@ -815,6 +815,9 @@ static void serial_reset(void *opaque)
s->thr_ipending = 0;
s->last_break_enable = 0;
qemu_irq_lower(s->irq);
+
+ serial_update_msl(s);
+ s->msr &= ~UART_MSR_ANY_DELTA;
}
void serial_realize_core(SerialState *s, Error **errp)
@@ -833,6 +836,7 @@ void serial_realize_core(SerialState *s, Error **errp)
serial_event, s);
fifo8_create(&s->recv_fifo, UART_FIFO_LENGTH);
fifo8_create(&s->xmit_fifo, UART_FIFO_LENGTH);
+ serial_reset(s);
}
void serial_exit_core(SerialState *s)
@@ -944,7 +948,5 @@ SerialState *serial_mm_init(MemoryRegion *address_space,
memory_region_init_io(&s->io, NULL, &serial_mm_ops[end], s,
"serial", 8 << it_shift);
memory_region_add_subregion(address_space, base, &s->io);
-
- serial_update_msl(s);
return s;
}
diff --git a/hw/dma/i8257.c b/hw/dma/i8257.c
index dd370ed7e5..a414029bea 100644
--- a/hw/dma/i8257.c
+++ b/hw/dma/i8257.c
@@ -24,6 +24,7 @@
#include "hw/hw.h"
#include "hw/isa/isa.h"
#include "qemu/main-loop.h"
+#include "trace.h"
/* #define DEBUG_DMA */
@@ -473,8 +474,7 @@ static void dma_reset(void *opaque)
static int dma_phony_handler (void *opaque, int nchan, int dma_pos, int dma_len)
{
- dolog ("unregistered DMA channel used nchan=%d dma_pos=%d dma_len=%d\n",
- nchan, dma_pos, dma_len);
+ trace_i8257_unregistered_dma(nchan, dma_pos, dma_len);
return dma_pos;
}
diff --git a/hw/i386/kvm/clock.c b/hw/i386/kvm/clock.c
index 07b9c0e581..1ac60d6cdd 100644
--- a/hw/i386/kvm/clock.c
+++ b/hw/i386/kvm/clock.c
@@ -14,8 +14,10 @@
*/
#include "qemu-common.h"
+#include "qemu/host-utils.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
+#include "sysemu/cpus.h"
#include "hw/sysbus.h"
#include "hw/kvm/clock.h"
@@ -34,6 +36,48 @@ typedef struct KVMClockState {
bool clock_valid;
} KVMClockState;
+struct pvclock_vcpu_time_info {
+ uint32_t version;
+ uint32_t pad0;
+ uint64_t tsc_timestamp;
+ uint64_t system_time;
+ uint32_t tsc_to_system_mul;
+ int8_t tsc_shift;
+ uint8_t flags;
+ uint8_t pad[2];
+} __attribute__((__packed__)); /* 32 bytes */
+
+static uint64_t kvmclock_current_nsec(KVMClockState *s)
+{
+ CPUState *cpu = first_cpu;
+ CPUX86State *env = cpu->env_ptr;
+ hwaddr kvmclock_struct_pa = env->system_time_msr & ~1ULL;
+ uint64_t migration_tsc = env->tsc;
+ struct pvclock_vcpu_time_info time;
+ uint64_t delta;
+ uint64_t nsec_lo;
+ uint64_t nsec_hi;
+ uint64_t nsec;
+
+ if (!(env->system_time_msr & 1ULL)) {
+ /* KVM clock not active */
+ return 0;
+ }
+
+ cpu_physical_memory_read(kvmclock_struct_pa, &time, sizeof(time));
+
+ assert(time.tsc_timestamp <= migration_tsc);
+ delta = migration_tsc - time.tsc_timestamp;
+ if (time.tsc_shift < 0) {
+ delta >>= -time.tsc_shift;
+ } else {
+ delta <<= time.tsc_shift;
+ }
+
+ mulu64(&nsec_lo, &nsec_hi, delta, time.tsc_to_system_mul);
+ nsec = (nsec_lo >> 32) | (nsec_hi << 32);
+ return nsec + time.system_time;
+}
static void kvmclock_vm_state_change(void *opaque, int running,
RunState state)
@@ -45,9 +89,15 @@ static void kvmclock_vm_state_change(void *opaque, int running,
if (running) {
struct kvm_clock_data data;
+ uint64_t time_at_migration = kvmclock_current_nsec(s);
s->clock_valid = false;
+ /* We can't rely on the migrated clock value, just discard it */
+ if (time_at_migration) {
+ s->clock = time_at_migration;
+ }
+
data.clock = s->clock;
data.flags = 0;
ret = kvm_vm_ioctl(kvm_state, KVM_SET_CLOCK, &data);
@@ -75,6 +125,9 @@ static void kvmclock_vm_state_change(void *opaque, int running,
if (s->clock_valid) {
return;
}
+
+ cpu_synchronize_all_states();
+ cpu_clean_all_dirty();
ret = kvm_vm_ioctl(kvm_state, KVM_GET_CLOCK, &data);
if (ret < 0) {
fprintf(stderr, "KVM_GET_CLOCK failed: %s\n", strerror(ret));
diff --git a/hw/i386/kvm/i8254.c b/hw/i386/kvm/i8254.c
index 59373aaade..472af811cd 100644
--- a/hw/i386/kvm/i8254.c
+++ b/hw/i386/kvm/i8254.c
@@ -239,6 +239,7 @@ static void kvm_pit_vm_state_change(void *opaque, int running,
if (running) {
kvm_pit_update_clock_offset(s);
+ kvm_pit_put(PIT_COMMON(s));
s->vm_stopped = false;
} else {
kvm_pit_update_clock_offset(s);
@@ -314,8 +315,6 @@ static void kvm_pit_class_init(ObjectClass *klass, void *data)
dc->realize = kvm_pit_realizefn;
k->set_channel_gate = kvm_pit_set_gate;
k->get_channel_info = kvm_pit_get_channel_info;
- k->pre_save = kvm_pit_get;
- k->post_load = kvm_pit_put;
dc->reset = kvm_pit_reset;
dc->props = kvm_pit_properties;
}
diff --git a/hw/i386/kvmvapic.c b/hw/i386/kvmvapic.c
index 2cca7a44f4..2dc362b88f 100644
--- a/hw/i386/kvmvapic.c
+++ b/hw/i386/kvmvapic.c
@@ -732,7 +732,11 @@ static void do_vapic_enable(void *data)
VAPICROMState *s = data;
X86CPU *cpu = X86_CPU(first_cpu);
- vapic_enable(s, cpu);
+ static const uint8_t enabled = 1;
+ cpu_physical_memory_write(s->vapic_paddr + offsetof(VAPICState, enabled),
+ &enabled, sizeof(enabled));
+ apic_enable_vapic(cpu->apic_state, s->vapic_paddr);
+ s->state = VAPIC_ACTIVE;
}
static void kvmvapic_vm_state_change(void *opaque, int running,
@@ -777,7 +781,10 @@ static int vapic_post_load(void *opaque, int version_id)
}
}
- s->vmsentry = qemu_add_vm_change_state_handler(kvmvapic_vm_state_change, s);
+ if (!s->vmsentry) {
+ s->vmsentry =
+ qemu_add_vm_change_state_handler(kvmvapic_vm_state_change, s);
+ }
return 0;
}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2026-05-21 09:44:26 +0200