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cpu: move interrupt handling out of translate-common.c 

translate-common.c will not be available anymore with --disable-tcg,
so we cannot leave cpu_interrupt_handler there.

Move the TCG-specific handler to accel/tcg/tcg-all.c, and adopt
KVM's handler as the default one, since it works just as well for
Xen and qtest.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-07-04 15:57:28 +02:00
parent a0be0c585f
commit 290dae4678
5 changed files with 46 additions and 65 deletions
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11
accel/kvm/kvm-all.c
View File

@ -981,15 +981,6 @@ static MemoryListener kvm_io_listener = {
.priority = 10,
};
static void kvm_handle_interrupt(CPUState *cpu, int mask)
{
cpu->interrupt_request |= mask;
if (!qemu_cpu_is_self(cpu)) {
qemu_cpu_kick(cpu);
}
}
int kvm_set_irq(KVMState *s, int irq, int level)
{
struct kvm_irq_level event;
@ -1774,8 +1765,6 @@ static int kvm_init(MachineState *ms)
s->many_ioeventfds = kvm_check_many_ioeventfds();
cpu_interrupt_handler = kvm_handle_interrupt;
return 0;
err:

2
accel/tcg/Makefile.objs
View File

@ -1,3 +1,3 @@
obj-$(CONFIG_SOFTMMU) += tcg-all.o
obj-$(CONFIG_SOFTMMU) += cputlb.o
obj-y += cpu-exec.o cpu-exec-common.o translate-all.o translate-common.o
obj-y += cpu-exec.o cpu-exec-common.o translate-all.o

32
accel/tcg/tcg-all.c
View File

@ -27,13 +27,45 @@
#include "sysemu/accel.h"
#include "sysemu/sysemu.h"
#include "qom/object.h"
#include "qemu-common.h"
#include "qom/cpu.h"
#include "sysemu/cpus.h"
#include "qemu/main-loop.h"
unsigned long tcg_tb_size;
static bool tcg_allowed = true;
#ifndef CONFIG_USER_ONLY
/* mask must never be zero, except for A20 change call */
static void tcg_handle_interrupt(CPUState *cpu, int mask)
{
int old_mask;
g_assert(qemu_mutex_iothread_locked());
old_mask = cpu->interrupt_request;
cpu->interrupt_request |= mask;
/*
* If called from iothread context, wake the target cpu in
* case its halted.
*/
if (!qemu_cpu_is_self(cpu)) {
qemu_cpu_kick(cpu);
} else {
cpu->icount_decr.u16.high = -1;
if (use_icount &&
!cpu->can_do_io
&& (mask & ~old_mask) != 0) {
cpu_abort(cpu, "Raised interrupt while not in I/O function");
}
}
}
#endif
static int tcg_init(MachineState *ms)
{
tcg_exec_init(tcg_tb_size * 1024 * 1024);
cpu_interrupt_handler = tcg_handle_interrupt;
return 0;
}

53
accel/tcg/translate-common.c
View File

@ -1,53 +0,0 @@
/*
* Host code generation common components
*
* Copyright (c) 2015 Peter Crosthwaite <crosthwaite.peter@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qom/cpu.h"
#include "sysemu/cpus.h"
#include "qemu/main-loop.h"
#ifndef CONFIG_USER_ONLY
/* mask must never be zero, except for A20 change call */
static void tcg_handle_interrupt(CPUState *cpu, int mask)
{
int old_mask;
g_assert(qemu_mutex_iothread_locked());
old_mask = cpu->interrupt_request;
cpu->interrupt_request |= mask;
/*
* If called from iothread context, wake the target cpu in
* case its halted.
*/
if (!qemu_cpu_is_self(cpu)) {
qemu_cpu_kick(cpu);
} else {
cpu->icount_decr.u16.high = -1;
if (use_icount &&
!cpu->can_do_io
&& (mask & ~old_mask) != 0) {
cpu_abort(cpu, "Raised interrupt while not in I/O function");
}
}
}
CPUInterruptHandler cpu_interrupt_handler = tcg_handle_interrupt;
#endif

13
qom/cpu.c
View File

@ -32,6 +32,8 @@
#include "hw/qdev-properties.h"
#include "trace-root.h"
CPUInterruptHandler cpu_interrupt_handler;
bool cpu_exists(int64_t id)
{
CPUState *cpu;
@ -417,6 +419,17 @@ static vaddr cpu_adjust_watchpoint_address(CPUState *cpu, vaddr addr, int len)
return addr;
}
static void generic_handle_interrupt(CPUState *cpu, int mask)
{
cpu->interrupt_request |= mask;
if (!qemu_cpu_is_self(cpu)) {
qemu_cpu_kick(cpu);
}
}
CPUInterruptHandler cpu_interrupt_handler = generic_handle_interrupt;
static void cpu_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);