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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH for-next 3/7] x86/traps: lift do_guest_trap to traps.h
And rename it to pv_inject_guest_trap. It will be needed later when some
PV specific code is moved.
No functional change.
Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
xen/arch/x86/traps.c | 61 ++++++++++++++++++--------------------------
xen/include/asm-x86/domain.h | 12 +++++++++
2 files changed, 37 insertions(+), 36 deletions(-)
diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index 0d54baf20e..a1981289a4 100644
--- a/xen/arch/x86/traps.c
+++ b/xen/arch/x86/traps.c
@@ -684,18 +684,6 @@ void pv_inject_event(const struct x86_event *event)
}
}
-static inline void do_guest_trap(unsigned int trapnr,
- const struct cpu_user_regs *regs)
-{
- const struct x86_event event = {
- .vector = trapnr,
- .error_code = (((trapnr < 32) && (TRAP_HAVE_EC & (1u << trapnr)))
- ? regs->error_code : X86_EVENT_NO_EC),
- };
-
- pv_inject_event(&event);
-}
-
static void instruction_done(struct cpu_user_regs *regs, unsigned long rip)
{
regs->rip = rip;
@@ -703,7 +691,7 @@ static void instruction_done(struct cpu_user_regs *regs,
unsigned long rip)
if ( regs->eflags & X86_EFLAGS_TF )
{
current->arch.debugreg[6] |= DR_STEP | DR_STATUS_RESERVED_ONE;
- do_guest_trap(TRAP_debug, regs);
+ pv_inject_guest_trap(TRAP_debug, regs);
}
}
@@ -751,7 +739,7 @@ int set_guest_machinecheck_trapbounce(void)
struct vcpu *v = current;
struct trap_bounce *tb = &v->arch.pv_vcpu.trap_bounce;
- do_guest_trap(TRAP_machine_check, guest_cpu_user_regs());
+ pv_inject_guest_trap(TRAP_machine_check, guest_cpu_user_regs());
tb->flags &= ~TBF_EXCEPTION; /* not needed for MCE delivery path */
return !null_trap_bounce(v, tb);
}
@@ -764,7 +752,7 @@ int set_guest_nmi_trapbounce(void)
{
struct vcpu *v = current;
struct trap_bounce *tb = &v->arch.pv_vcpu.trap_bounce;
- do_guest_trap(TRAP_nmi, guest_cpu_user_regs());
+ pv_inject_guest_trap(TRAP_nmi, guest_cpu_user_regs());
tb->flags &= ~TBF_EXCEPTION; /* not needed for NMI delivery path */
return !null_trap_bounce(v, tb);
}
@@ -794,7 +782,7 @@ void do_trap(struct cpu_user_regs *regs)
if ( guest_mode(regs) )
{
- do_guest_trap(trapnr, regs);
+ pv_inject_guest_trap(trapnr, regs);
return;
}
@@ -1060,7 +1048,7 @@ static int emulate_forced_invalid_op(struct cpu_user_regs
*regs)
if ( current->arch.cpuid_faulting && !guest_kernel_mode(current, regs) )
{
regs->rip = eip;
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
return EXCRET_fault_fixed;
}
@@ -1096,7 +1084,7 @@ void do_invalid_op(struct cpu_user_regs *regs)
{
if ( !emulate_invalid_rdtscp(regs) &&
!emulate_forced_invalid_op(regs) )
- do_guest_trap(TRAP_invalid_op, regs);
+ pv_inject_guest_trap(TRAP_invalid_op, regs);
return;
}
@@ -1210,7 +1198,7 @@ void do_int3(struct cpu_user_regs *regs)
return;
}
- do_guest_trap(TRAP_int3, regs);
+ pv_inject_guest_trap(TRAP_int3, regs);
}
static void reserved_bit_page_fault(
@@ -3023,7 +3011,7 @@ static int emulate_privileged_op(struct cpu_user_regs
*regs)
{
curr->arch.debugreg[6] |= ctxt.bpmatch | DR_STATUS_RESERVED_ONE;
if ( !(curr->arch.pv_vcpu.trap_bounce.flags & TBF_EXCEPTION) )
- do_guest_trap(TRAP_debug, regs);
+ pv_inject_guest_trap(TRAP_debug, regs);
}
/* fall through */
case X86EMUL_RETRY:
@@ -3138,12 +3126,12 @@ static void emulate_gate_op(struct cpu_user_regs *regs)
(((ar >> 13) & 3) < (regs->cs & 3)) ||
((ar & _SEGMENT_TYPE) != 0xc00) )
{
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
return;
}
if ( !(ar & _SEGMENT_P) )
{
- do_guest_trap(TRAP_no_segment, regs);
+ pv_inject_guest_trap(TRAP_no_segment, regs);
return;
}
dpl = (ar >> 13) & 3;
@@ -3159,7 +3147,7 @@ static void emulate_gate_op(struct cpu_user_regs *regs)
!(ar & _SEGMENT_P) ||
!(ar & _SEGMENT_CODE) )
{
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
return;
}
@@ -3177,7 +3165,7 @@ static void emulate_gate_op(struct cpu_user_regs *regs)
else
{
ASSERT(!ctxt.ctxt.event_pending);
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
}
return;
}
@@ -3231,7 +3219,7 @@ static void emulate_gate_op(struct cpu_user_regs *regs)
(opnd_sel & ~3) != regs->error_code ||
dpl < (opnd_sel & 3) )
{
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
return;
}
@@ -3279,7 +3267,7 @@ static void emulate_gate_op(struct cpu_user_regs *regs)
/* Inner stack known only for kernel ring. */
if ( (sel & 3) != GUEST_KERNEL_RPL(v->domain) )
{
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
return;
}
esp = v->arch.pv_vcpu.kernel_sp;
@@ -3303,7 +3291,7 @@ static void emulate_gate_op(struct cpu_user_regs *regs)
stkp = (unsigned int *)(unsigned long)((unsigned int)base + esp);
if ( !compat_access_ok(stkp - 4 - nparm, (4 + nparm) * 4) )
{
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
return;
}
push(regs->ss);
@@ -3318,12 +3306,12 @@ static void emulate_gate_op(struct cpu_user_regs *regs)
(ar & _SEGMENT_CODE) ||
!(ar & _SEGMENT_WR) ||
!check_stack_limit(ar, limit, esp + nparm * 4, nparm * 4)
)
- return do_guest_trap(TRAP_gp_fault, regs);
+ return pv_inject_guest_trap(TRAP_gp_fault, regs);
ustkp = (unsigned int *)(unsigned long)
((unsigned int)base + regs->esp + nparm * 4);
if ( !compat_access_ok(ustkp - nparm, nparm * 4) )
{
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
return;
}
do
@@ -3334,7 +3322,8 @@ static void emulate_gate_op(struct cpu_user_regs *regs)
rc = __get_user(parm, ustkp);
if ( rc )
{
- pv_inject_page_fault(0, (unsigned long)(ustkp + 1) -
rc);
+ pv_inject_page_fault(0,
+ (unsigned long)(ustkp + 1) - rc);
return;
}
push(parm);
@@ -3349,7 +3338,7 @@ static void emulate_gate_op(struct cpu_user_regs *regs)
if ( !read_descriptor(ss, v, &base, &limit, &ar, 0) ||
((ar >> 13) & 3) != (sel & 3) )
{
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
return;
}
if ( !check_stack_limit(ar, limit, esp, 2 * 4) )
@@ -3360,7 +3349,7 @@ static void emulate_gate_op(struct cpu_user_regs *regs)
stkp = (unsigned int *)(unsigned long)((unsigned int)base + esp);
if ( !compat_access_ok(stkp - 2, 2 * 4) )
{
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
return;
}
}
@@ -3421,7 +3410,7 @@ void do_general_protection(struct cpu_user_regs *regs)
if ( permit_softint(TI_GET_DPL(ti), v, regs) )
{
regs->rip += 2;
- do_guest_trap(vector, regs);
+ pv_inject_guest_trap(vector, regs);
return;
}
}
@@ -3440,7 +3429,7 @@ void do_general_protection(struct cpu_user_regs *regs)
}
/* Pass on GPF as is. */
- do_guest_trap(TRAP_gp_fault, regs);
+ pv_inject_guest_trap(TRAP_gp_fault, regs);
return;
gp_in_kernel:
@@ -3660,7 +3649,7 @@ void do_device_not_available(struct cpu_user_regs *regs)
if ( curr->arch.pv_vcpu.ctrlreg[0] & X86_CR0_TS )
{
- do_guest_trap(TRAP_no_device, regs);
+ pv_inject_guest_trap(TRAP_no_device, regs);
curr->arch.pv_vcpu.ctrlreg[0] &= ~X86_CR0_TS;
}
else
@@ -3733,7 +3722,7 @@ void do_debug(struct cpu_user_regs *regs)
v->arch.debugreg[6] = read_debugreg(6);
ler_enable();
- do_guest_trap(TRAP_debug, regs);
+ pv_inject_guest_trap(TRAP_debug, regs);
return;
out:
diff --git a/xen/include/asm-x86/domain.h b/xen/include/asm-x86/domain.h
index 6420ca24b9..af47bb48e8 100644
--- a/xen/include/asm-x86/domain.h
+++ b/xen/include/asm-x86/domain.h
@@ -654,6 +654,18 @@ static inline void pv_inject_page_fault(int errcode,
unsigned long cr2)
pv_inject_event(&event);
}
+static inline void pv_inject_guest_trap(unsigned int trapnr,
+ const struct cpu_user_regs *regs)
+{
+ const struct x86_event event = {
+ .vector = trapnr,
+ .error_code = (((trapnr < 32) && (TRAP_HAVE_EC & (1u << trapnr)))
+ ? regs->error_code : X86_EVENT_NO_EC),
+ };
+
+ pv_inject_event(&event);
+}
+
#endif /* __ASM_DOMAIN_H__ */
/*
--
2.11.0
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