From: Thomas Gleixner
Convert #XF to IDTENTRY_ERRORCODE:
- Implement the C entry point with DEFINE_IDTENTRY
- Emit the ASM stub with DECLARE_IDTENTRY
- Handle INVD_BUG in C
- Remove the ASM idtentry in 64bit
- Remove the open coded ASM entry code in 32bit
- Fixup the XEN/PV code
- Remove the old prototyoes
- Remove the RCU warning as the new entry macro ensures correctness
No functional change.
Signed-off-by: Thomas Gleixner
---
V3: Move the INVD bug handling to C (Brian)
---
arch/x86/entry/entry_32.S | 14 --
arch/x86/entry/entry_64.S |1 -
arch/x86/include/asm/idtentry.h |1 +
arch/x86/include/asm/traps.h|3 ---
arch/x86/kernel/idt.c |2 +-
arch/x86/kernel/traps.c | 29 +
arch/x86/xen/enlighten_pv.c |2 +-
arch/x86/xen/xen-asm_64.S |2 +-
8 files changed, 21 insertions(+), 33 deletions(-)
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -1290,20 +1290,6 @@ SYM_FUNC_END(name)
/* The include is where all of the SMP etc. interrupts come from */
#include
-SYM_CODE_START(simd_coprocessor_error)
- ASM_CLAC
- pushl $0
-#ifdef CONFIG_X86_INVD_BUG
- /* AMD 486 bug: invd from userspace calls exception 19 instead of #GP */
- ALTERNATIVE "pushl $exc_general_protection", \
- "pushl $do_simd_coprocessor_error",\
- X86_FEATURE_XMM
-#else
- pushl $do_simd_coprocessor_error
-#endif
- jmp common_exception
-SYM_CODE_END(simd_coprocessor_error)
-
#ifdef CONFIG_PARAVIRT
SYM_CODE_START(native_iret)
iret
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -1074,7 +1074,6 @@ apicinterrupt IRQ_WORK_VECTOR irq_work
*/
idtentry X86_TRAP_BP int3do_int3
has_error_code=0
-idtentry X86_TRAP_XF simd_coprocessor_error
do_simd_coprocessor_error has_error_code=0
idtentry X86_TRAP_PF page_fault do_page_fault
has_error_code=1
--- a/arch/x86/include/asm/idtentry.h
+++ b/arch/x86/include/asm/idtentry.h
@@ -131,6 +131,7 @@ DECLARE_IDTENTRY(X86_TRAP_NM, exc_devic
DECLARE_IDTENTRY(X86_TRAP_OLD_MF, exc_coproc_segment_overrun);
DECLARE_IDTENTRY(X86_TRAP_SPURIOUS,exc_spurious_interrupt_bug);
DECLARE_IDTENTRY(X86_TRAP_MF, exc_coprocessor_error);
+DECLARE_IDTENTRY(X86_TRAP_XF, exc_simd_coprocessor_error);
/* Simple exception entries with error code pushed by hardware */
DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_TS,exc_invalid_tss);
--- a/arch/x86/include/asm/traps.h
+++ b/arch/x86/include/asm/traps.h
@@ -22,7 +22,6 @@ asmlinkage void async_page_fault(void);
#ifdef CONFIG_X86_MCE
asmlinkage void machine_check(void);
#endif /* CONFIG_X86_MCE */
-asmlinkage void simd_coprocessor_error(void);
#if defined(CONFIG_X86_64) && defined(CONFIG_XEN_PV)
asmlinkage void xen_xennmi(void);
@@ -33,7 +32,6 @@ asmlinkage void xen_page_fault(void);
#ifdef CONFIG_X86_MCE
asmlinkage void xen_machine_check(void);
#endif /* CONFIG_X86_MCE */
-asmlinkage void xen_simd_coprocessor_error(void);
#endif
dotraplinkage void do_debug(struct pt_regs *regs, long error_code);
@@ -43,7 +41,6 @@ dotraplinkage void do_int3(struct pt_reg
dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code,
unsigned long cr2);
#endif
dotraplinkage void do_page_fault(struct pt_regs *regs, unsigned long
error_code, unsigned long address);
-dotraplinkage void do_simd_coprocessor_error(struct pt_regs *regs, long
error_code);
#ifdef CONFIG_X86_32
dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code);
#endif
--- a/arch/x86/kernel/idt.c
+++ b/arch/x86/kernel/idt.c
@@ -83,7 +83,7 @@ static const __initconst struct idt_data
INTG(X86_TRAP_SPURIOUS, asm_exc_spurious_interrupt_bug),
INTG(X86_TRAP_MF, asm_exc_coprocessor_error),
INTG(X86_TRAP_AC, asm_exc_alignment_check),
- INTG(X86_TRAP_XF, simd_coprocessor_error),
+ INTG(X86_TRAP_XF, asm_exc_simd_coprocessor_error),
#ifdef CONFIG_X86_32
TSKG(X86_TRAP_DF, GDT_ENTRY_DOUBLEFAULT_TSS),
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -802,7 +802,7 @@ NOKPROBE_SYMBOL(do_debug);
* the correct behaviour even in the presence of the asynchronous
* IRQ13 behaviour
*/
-static void math_error(struct pt_regs *regs, int error_code, int trapnr)
+static void math_error(struct pt_regs *regs, int trapnr)
{
struct task_struct *task = current;
struct fpu *fpu = &task->thread.fpu;
@@ -813,15 +813,15 @@ static void math_error(struct pt_regs *r
cond_local_irq_enable(regs);
if (!user_mode(regs)) {
- if (fixup_exception(regs, trapnr, error_code, 0)
