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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v4 15/27] x86: move callback_op code to pv/callback.c
Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
xen/arch/x86/pv/Makefile | 1 +
xen/arch/x86/pv/callback.c | 157 ++++++++++++++++++++++++++++++++++++++++++++
xen/arch/x86/x86_64/traps.c | 148 -----------------------------------------
3 files changed, 158 insertions(+), 148 deletions(-)
create mode 100644 xen/arch/x86/pv/callback.c
diff --git a/xen/arch/x86/pv/Makefile b/xen/arch/x86/pv/Makefile
index 7e3da332d8..bd1a7081fc 100644
--- a/xen/arch/x86/pv/Makefile
+++ b/xen/arch/x86/pv/Makefile
@@ -1,6 +1,7 @@
obj-y += hypercall.o
obj-y += traps.o
+obj-y += callback.o
obj-bin-y += dom0_build.init.o
obj-y += domain.o
obj-y += emulate.o
diff --git a/xen/arch/x86/pv/callback.c b/xen/arch/x86/pv/callback.c
new file mode 100644
index 0000000000..dbd602c89d
--- /dev/null
+++ b/xen/arch/x86/pv/callback.c
@@ -0,0 +1,157 @@
+#include <xen/guest_access.h>
+#include <xen/lib.h>
+#include <xen/sched.h>
+
+#include <asm/current.h>
+#include <asm/nmi.h>
+#include <asm/traps.h>
+
+#include <public/callback.h>
+
+static long register_guest_callback(struct callback_register *reg)
+{
+ long ret = 0;
+ struct vcpu *v = current;
+
+ if ( !is_canonical_address(reg->address) )
+ return -EINVAL;
+
+ switch ( reg->type )
+ {
+ case CALLBACKTYPE_event:
+ v->arch.pv_vcpu.event_callback_eip = reg->address;
+ break;
+
+ case CALLBACKTYPE_failsafe:
+ v->arch.pv_vcpu.failsafe_callback_eip = reg->address;
+ if ( reg->flags & CALLBACKF_mask_events )
+ set_bit(_VGCF_failsafe_disables_events,
+ &v->arch.vgc_flags);
+ else
+ clear_bit(_VGCF_failsafe_disables_events,
+ &v->arch.vgc_flags);
+ break;
+
+ case CALLBACKTYPE_syscall:
+ v->arch.pv_vcpu.syscall_callback_eip = reg->address;
+ if ( reg->flags & CALLBACKF_mask_events )
+ set_bit(_VGCF_syscall_disables_events,
+ &v->arch.vgc_flags);
+ else
+ clear_bit(_VGCF_syscall_disables_events,
+ &v->arch.vgc_flags);
+ break;
+
+ case CALLBACKTYPE_syscall32:
+ v->arch.pv_vcpu.syscall32_callback_eip = reg->address;
+ v->arch.pv_vcpu.syscall32_disables_events =
+ !!(reg->flags & CALLBACKF_mask_events);
+ break;
+
+ case CALLBACKTYPE_sysenter:
+ v->arch.pv_vcpu.sysenter_callback_eip = reg->address;
+ v->arch.pv_vcpu.sysenter_disables_events =
+ !!(reg->flags & CALLBACKF_mask_events);
+ break;
+
+ case CALLBACKTYPE_nmi:
+ ret = register_guest_nmi_callback(reg->address);
+ break;
+
+ default:
+ ret = -ENOSYS;
+ break;
+ }
+
+ return ret;
+}
+
+static long unregister_guest_callback(struct callback_unregister *unreg)
+{
+ long ret;
+
+ switch ( unreg->type )
+ {
+ case CALLBACKTYPE_event:
+ case CALLBACKTYPE_failsafe:
+ case CALLBACKTYPE_syscall:
+ case CALLBACKTYPE_syscall32:
+ case CALLBACKTYPE_sysenter:
+ ret = -EINVAL;
+ break;
+
+ case CALLBACKTYPE_nmi:
+ ret = unregister_guest_nmi_callback();
+ break;
+
+ default:
+ ret = -ENOSYS;
+ break;
+ }
+
+ return ret;
+}
+
+
+long do_callback_op(int cmd, XEN_GUEST_HANDLE_PARAM(const_void) arg)
+{
+ long ret;
+
+ switch ( cmd )
+ {
+ case CALLBACKOP_register:
+ {
+ struct callback_register reg;
+
+ ret = -EFAULT;
+ if ( copy_from_guest(®, arg, 1) )
+ break;
+
+ ret = register_guest_callback(®);
+ }
+ break;
+
+ case CALLBACKOP_unregister:
+ {
+ struct callback_unregister unreg;
+
+ ret = -EFAULT;
+ if ( copy_from_guest(&unreg, arg, 1) )
+ break;
+
+ ret = unregister_guest_callback(&unreg);
+ }
+ break;
+
+ default:
+ ret = -ENOSYS;
+ break;
+ }
+
+ return ret;
+}
+
+long do_set_callbacks(unsigned long event_address,
+ unsigned long failsafe_address,
+ unsigned long syscall_address)
+{
+ struct callback_register event = {
+ .type = CALLBACKTYPE_event,
+ .address = event_address,
+ };
+ struct callback_register failsafe = {
+ .type = CALLBACKTYPE_failsafe,
+ .address = failsafe_address,
+ };
+ struct callback_register syscall = {
+ .type = CALLBACKTYPE_syscall,
+ .address = syscall_address,
+ };
+
+ register_guest_callback(&event);
+ register_guest_callback(&failsafe);
+ register_guest_callback(&syscall);
+
+ return 0;
+}
+
diff --git a/xen/arch/x86/x86_64/traps.c b/xen/arch/x86/x86_64/traps.c
index 4641bc6d06..1a8beb8068 100644
--- a/xen/arch/x86/x86_64/traps.c
+++ b/xen/arch/x86/x86_64/traps.c
@@ -23,7 +23,6 @@
#include <asm/shared.h>
#include <asm/hvm/hvm.h>
#include <asm/hvm/support.h>
-#include <public/callback.h>
static void print_xen_info(void)
@@ -350,153 +349,6 @@ void init_int80_direct_trap(struct vcpu *v)
tb->flags = TBF_EXCEPTION | (TI_GET_IF(ti) ? TBF_INTERRUPT : 0);
}
-static long register_guest_callback(struct callback_register *reg)
-{
- long ret = 0;
- struct vcpu *v = current;
-
- if ( !is_canonical_address(reg->address) )
- return -EINVAL;
-
- switch ( reg->type )
- {
- case CALLBACKTYPE_event:
- v->arch.pv_vcpu.event_callback_eip = reg->address;
- break;
-
- case CALLBACKTYPE_failsafe:
- v->arch.pv_vcpu.failsafe_callback_eip = reg->address;
- if ( reg->flags & CALLBACKF_mask_events )
- set_bit(_VGCF_failsafe_disables_events,
- &v->arch.vgc_flags);
- else
- clear_bit(_VGCF_failsafe_disables_events,
- &v->arch.vgc_flags);
- break;
-
- case CALLBACKTYPE_syscall:
- v->arch.pv_vcpu.syscall_callback_eip = reg->address;
- if ( reg->flags & CALLBACKF_mask_events )
- set_bit(_VGCF_syscall_disables_events,
- &v->arch.vgc_flags);
- else
- clear_bit(_VGCF_syscall_disables_events,
- &v->arch.vgc_flags);
- break;
-
- case CALLBACKTYPE_syscall32:
- v->arch.pv_vcpu.syscall32_callback_eip = reg->address;
- v->arch.pv_vcpu.syscall32_disables_events =
- !!(reg->flags & CALLBACKF_mask_events);
- break;
-
- case CALLBACKTYPE_sysenter:
- v->arch.pv_vcpu.sysenter_callback_eip = reg->address;
- v->arch.pv_vcpu.sysenter_disables_events =
- !!(reg->flags & CALLBACKF_mask_events);
- break;
-
- case CALLBACKTYPE_nmi:
- ret = register_guest_nmi_callback(reg->address);
- break;
-
- default:
- ret = -ENOSYS;
- break;
- }
-
- return ret;
-}
-
-static long unregister_guest_callback(struct callback_unregister *unreg)
-{
- long ret;
-
- switch ( unreg->type )
- {
- case CALLBACKTYPE_event:
- case CALLBACKTYPE_failsafe:
- case CALLBACKTYPE_syscall:
- case CALLBACKTYPE_syscall32:
- case CALLBACKTYPE_sysenter:
- ret = -EINVAL;
- break;
-
- case CALLBACKTYPE_nmi:
- ret = unregister_guest_nmi_callback();
- break;
-
- default:
- ret = -ENOSYS;
- break;
- }
-
- return ret;
-}
-
-
-long do_callback_op(int cmd, XEN_GUEST_HANDLE_PARAM(const_void) arg)
-{
- long ret;
-
- switch ( cmd )
- {
- case CALLBACKOP_register:
- {
- struct callback_register reg;
-
- ret = -EFAULT;
- if ( copy_from_guest(®, arg, 1) )
- break;
-
- ret = register_guest_callback(®);
- }
- break;
-
- case CALLBACKOP_unregister:
- {
- struct callback_unregister unreg;
-
- ret = -EFAULT;
- if ( copy_from_guest(&unreg, arg, 1) )
- break;
-
- ret = unregister_guest_callback(&unreg);
- }
- break;
-
- default:
- ret = -ENOSYS;
- break;
- }
-
- return ret;
-}
-
-long do_set_callbacks(unsigned long event_address,
- unsigned long failsafe_address,
- unsigned long syscall_address)
-{
- struct callback_register event = {
- .type = CALLBACKTYPE_event,
- .address = event_address,
- };
- struct callback_register failsafe = {
- .type = CALLBACKTYPE_failsafe,
- .address = failsafe_address,
- };
- struct callback_register syscall = {
- .type = CALLBACKTYPE_syscall,
- .address = syscall_address,
- };
-
- register_guest_callback(&event);
- register_guest_callback(&failsafe);
- register_guest_callback(&syscall);
-
- return 0;
-}
-
static void hypercall_page_initialise_ring3_kernel(void *hypercall_page)
{
char *p;
--
2.11.0
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