x86: get rid of _MASK flags
There's no need for the *_MASK flags (TF_MASK, IF_MASK, etc), found in
processor.h (both _32 and _64). They have a one-to-one mapping with the
EFLAGS value. This patch removes the definitions, and use the already
existent X86_EFLAGS_ version when applicable.
[ roland@redhat.com: KVM build fixes. ]
Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index d03d43f..0e24e3f 100644
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -501,7 +501,7 @@
regs->ss = __USER32_DS;
set_fs(USER_DS);
- regs->flags &= ~TF_MASK;
+ regs->flags &= ~X86_EFLAGS_TF;
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);
@@ -601,7 +601,7 @@
regs->ss = __USER32_DS;
set_fs(USER_DS);
- regs->flags &= ~TF_MASK;
+ regs->flags &= ~X86_EFLAGS_TF;
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);
diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c
index 9aadd4d..8de82c8 100644
--- a/arch/x86/kernel/kprobes.c
+++ b/arch/x86/kernel/kprobes.c
@@ -387,9 +387,9 @@
{
__get_cpu_var(current_kprobe) = p;
kcb->kprobe_saved_flags = kcb->kprobe_old_flags
- = (regs->flags & (TF_MASK | IF_MASK));
+ = (regs->flags & (X86_EFLAGS_TF | X86_EFLAGS_IF));
if (is_IF_modifier(p->ainsn.insn))
- kcb->kprobe_saved_flags &= ~IF_MASK;
+ kcb->kprobe_saved_flags &= ~X86_EFLAGS_IF;
}
static __always_inline void clear_btf(void)
@@ -407,8 +407,8 @@
static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
{
clear_btf();
- regs->flags |= TF_MASK;
- regs->flags &= ~IF_MASK;
+ regs->flags |= X86_EFLAGS_TF;
+ regs->flags &= ~X86_EFLAGS_IF;
/*single step inline if the instruction is an int3*/
if (p->opcode == BREAKPOINT_INSTRUCTION)
regs->ip = (unsigned long)p->addr;
@@ -454,7 +454,7 @@
if (p) {
if (kcb->kprobe_status == KPROBE_HIT_SS &&
*p->ainsn.insn == BREAKPOINT_INSTRUCTION) {
- regs->flags &= ~TF_MASK;
+ regs->flags &= ~X86_EFLAGS_TF;
regs->flags |= kcb->kprobe_saved_flags;
goto no_kprobe;
#ifdef CONFIG_X86_64
@@ -749,10 +749,10 @@
insn++;
#endif
- regs->flags &= ~TF_MASK;
+ regs->flags &= ~X86_EFLAGS_TF;
switch (*insn) {
case 0x9c: /* pushfl */
- *tos &= ~(TF_MASK | IF_MASK);
+ *tos &= ~(X86_EFLAGS_TF | X86_EFLAGS_IF);
*tos |= kcb->kprobe_old_flags;
break;
case 0xc2: /* iret/ret/lret */
@@ -852,7 +852,7 @@
* will have TF set, in which case, continue the remaining processing
* of do_debug, as if this is not a probe hit.
*/
- if (regs->flags & TF_MASK)
+ if (regs->flags & X86_EFLAGS_TF)
return 0;
return 1;
@@ -982,7 +982,7 @@
*/
memcpy(kcb->jprobes_stack, (kprobe_opcode_t *)addr,
MIN_STACK_SIZE(addr));
- regs->flags &= ~IF_MASK;
+ regs->flags &= ~X86_EFLAGS_IF;
trace_hardirqs_off();
regs->ip = (unsigned long)(jp->entry);
return 1;
diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index 1c9bca5..4eb751c 100644
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -295,7 +295,7 @@
see include/asm-x86_64/uaccess.h for details. */
set_fs(USER_DS);
- regs->flags &= ~TF_MASK;
+ regs->flags &= ~X86_EFLAGS_TF;
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);
#ifdef DEBUG_SIG
@@ -463,7 +463,7 @@
/* Pending single-step? */
if (thread_info_flags & _TIF_SINGLESTEP) {
- regs->flags |= TF_MASK;
+ regs->flags |= X86_EFLAGS_TF;
clear_thread_flag(TIF_SINGLESTEP);
}
diff --git a/arch/x86/kernel/traps_64.c b/arch/x86/kernel/traps_64.c
index cf90ceb..7118fa0 100644
--- a/arch/x86/kernel/traps_64.c
+++ b/arch/x86/kernel/traps_64.c
@@ -904,7 +904,7 @@
clear_TF_reenable:
set_tsk_thread_flag(tsk, TIF_SINGLESTEP);
- regs->flags &= ~TF_MASK;
+ regs->flags &= ~X86_EFLAGS_TF;
preempt_conditional_cli(regs);
}
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index bb56ae3..5b397b6 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -524,7 +524,7 @@
static void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
{
if (vcpu->rmode.active)
- rflags |= IOPL_MASK | X86_EFLAGS_VM;
+ rflags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
vmcs_writel(GUEST_RFLAGS, rflags);
}
@@ -1050,7 +1050,7 @@
vmcs_write32(GUEST_TR_AR_BYTES, vcpu->rmode.tr.ar);
flags = vmcs_readl(GUEST_RFLAGS);
- flags &= ~(IOPL_MASK | X86_EFLAGS_VM);
+ flags &= ~(X86_EFLAGS_IOPL | X86_EFLAGS_VM);
flags |= (vcpu->rmode.save_iopl << IOPL_SHIFT);
vmcs_writel(GUEST_RFLAGS, flags);
@@ -1107,9 +1107,9 @@
vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
flags = vmcs_readl(GUEST_RFLAGS);
- vcpu->rmode.save_iopl = (flags & IOPL_MASK) >> IOPL_SHIFT;
+ vcpu->rmode.save_iopl = (flags & X86_EFLAGS_IOPL) >> IOPL_SHIFT;
- flags |= IOPL_MASK | X86_EFLAGS_VM;
+ flags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
vmcs_writel(GUEST_RFLAGS, flags);
vmcs_writel(GUEST_CR4, vmcs_readl(GUEST_CR4) | X86_CR4_VME);
diff --git a/include/asm-x86/kprobes.h b/include/asm-x86/kprobes.h
index 6e6371a..143476a 100644
--- a/include/asm-x86/kprobes.h
+++ b/include/asm-x86/kprobes.h
@@ -88,7 +88,7 @@
*/
static inline void restore_interrupts(struct pt_regs *regs)
{
- if (regs->flags & IF_MASK)
+ if (regs->flags & X86_EFLAGS_IF)
local_irq_enable();
}
diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index dea81b7..e8dd394 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -1,6 +1,8 @@
#ifndef __ASM_X86_PROCESSOR_H
#define __ASM_X86_PROCESSOR_H
+#include <asm/processor-flags.h>
+
static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx)
{
diff --git a/include/asm-x86/processor_32.h b/include/asm-x86/processor_32.h
index 76cada9..b9dbe46 100644
--- a/include/asm-x86/processor_32.h
+++ b/include/asm-x86/processor_32.h
@@ -19,7 +19,6 @@
#include <asm/percpu.h>
#include <linux/cpumask.h>
#include <linux/init.h>
-#include <asm/processor-flags.h>
#include <asm/desc_defs.h>
static inline int desc_empty(const void *ptr)
diff --git a/include/asm-x86/processor_64.h b/include/asm-x86/processor_64.h
index a0a9e55..c49716a 100644
--- a/include/asm-x86/processor_64.h
+++ b/include/asm-x86/processor_64.h
@@ -18,19 +18,8 @@
#include <asm/percpu.h>
#include <linux/personality.h>
#include <linux/cpumask.h>
-#include <asm/processor-flags.h>
#include <asm/desc_defs.h>
-#define TF_MASK 0x00000100
-#define IF_MASK 0x00000200
-#define IOPL_MASK 0x00003000
-#define NT_MASK 0x00004000
-#define VM_MASK 0x00020000
-#define AC_MASK 0x00040000
-#define VIF_MASK 0x00080000 /* virtual interrupt flag */
-#define VIP_MASK 0x00100000 /* virtual interrupt pending */
-#define ID_MASK 0x00200000
-
static inline int desc_empty(const void *ptr)
{
const u32 *desc = ptr;