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Subject[PATCH v8 6/6] allower the user to disable pv event support
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
---
hw/pc_piix.c | 6 +++++-
qemu-config.c | 4 ++++
qemu-options.hx | 3 ++-
3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 4af8403..9b877a7 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -151,6 +151,8 @@ static void pc_init1(MemoryRegion *system_memory,
MemoryRegion *pci_memory;
MemoryRegion *rom_memory;
void *fw_cfg = NULL;
+ QemuOptsList *list = qemu_find_opts("machine");
+ bool enable_pv_event;

pc_cpus_init(cpu_model);

@@ -289,8 +291,10 @@ static void pc_init1(MemoryRegion *system_memory,
pc_pci_device_init(pci_bus);
}

+ enable_pv_event = qemu_opt_get_bool(QTAILQ_FIRST(&list->head),
+ "enable_pv_event", false);
#ifdef KVM_PV_EVENT_PORT
- if (kvm_enabled()) {
+ if (kvm_enabled() && enable_pv_event) {
kvm_pv_event_init(isa_bus);
}
#endif
diff --git a/qemu-config.c b/qemu-config.c
index 5c3296b..5ec5aa9 100644
--- a/qemu-config.c
+++ b/qemu-config.c
@@ -595,6 +595,10 @@ static QemuOptsList qemu_machine_opts = {
.name = "dt_compatible",
.type = QEMU_OPT_STRING,
.help = "Overrides the \"compatible\" property of the dt root node",
+ }, {
+ .name = "enable_pv_event",
+ .type = QEMU_OPT_BOOL,
+ .help = "handle pv event"
},
{ /* End of list */ }
},
diff --git a/qemu-options.hx b/qemu-options.hx
index 5e7d0dc..94d7865 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -37,7 +37,8 @@ DEF("machine", HAS_ARG, QEMU_OPTION_machine, \
" property accel=accel1[:accel2[:...]] selects accelerator\n"
" supported accelerators are kvm, xen, tcg (default: tcg)\n"
" kernel_irqchip=on|off controls accelerated irqchip support\n"
- " kvm_shadow_mem=size of KVM shadow MMU\n",
+ " kvm_shadow_mem=size of KVM shadow MMU\n"
+ " enable_pv_event=on|off controls pv event support\n",
QEMU_ARCH_ALL)
STEXI
@item -machine [type=]@var{name}[,prop=@var{value}[,...]]
--
1.7.1


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