From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Steven Rostedt <rostedt@goodmis.org>,
Brian Gerst <brgerst@gmail.com>, Juergen Gross <jgross@suse.com>,
Frederic Weisbecker <frederic@kernel.org>,
Alexandre Chartre <alexandre.chartre@oracle.com>
Subject: [patch part-III V2 12/23] x86/entry: Convert Device not available exception to IDTENTRY
Date: Mon, 09 Mar 2020 00:14:22 +0100 [thread overview]
Message-ID: <20200308231719.627488669@linutronix.de> (raw)
In-Reply-To: 20200308231410.905396057@linutronix.de
From: Thomas Gleixner <tglx@linutronix.de>
Convert #NM to IDTENTRY:
- Implement the C entry point with DEFINE_IDTENTRY
- Emit the ASM stub with DECLARE_IDTENTRY
- Remove the ASM idtentry in 64bit
- Remove the open coded ASM entry code in 32bit
- Fixup the XEN/PV code
- Remove the old prototyoes
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/entry/entry_32.S | 7 -------
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 | 6 ++----
arch/x86/xen/enlighten_pv.c | 2 +-
arch/x86/xen/xen-asm_64.S | 2 +-
8 files changed, 6 insertions(+), 18 deletions(-)
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -1320,13 +1320,6 @@ SYM_CODE_START(simd_coprocessor_error)
jmp common_exception
SYM_CODE_END(simd_coprocessor_error)
-SYM_CODE_START(device_not_available)
- ASM_CLAC
- pushl $0
- pushl $do_device_not_available
- jmp common_exception
-SYM_CODE_END(device_not_available)
-
#ifdef CONFIG_PARAVIRT
SYM_CODE_START(native_iret)
iret
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -1062,7 +1062,6 @@ apicinterrupt IRQ_WORK_VECTOR irq_work
*/
idtentry X86_TRAP_BP int3 do_int3 has_error_code=0
-idtentry X86_TRAP_NM device_not_available do_device_not_available has_error_code=0
idtentry X86_TRAP_OLD_MF coprocessor_segment_overrun do_coprocessor_segment_overrun has_error_code=0
idtentry X86_TRAP_TS invalid_TSS do_invalid_TSS has_error_code=1
idtentry X86_TRAP_NP segment_not_present do_segment_not_present has_error_code=1
--- a/arch/x86/include/asm/idtentry.h
+++ b/arch/x86/include/asm/idtentry.h
@@ -96,5 +96,6 @@ DECLARE_IDTENTRY(X86_TRAP_DE, exc_divid
DECLARE_IDTENTRY(X86_TRAP_OF, exc_overflow);
DECLARE_IDTENTRY(X86_TRAP_BR, exc_bounds);
DECLARE_IDTENTRY(X86_TRAP_UD, exc_invalid_op);
+DECLARE_IDTENTRY(X86_TRAP_NM, exc_device_not_available);
#endif
--- a/arch/x86/include/asm/traps.h
+++ b/arch/x86/include/asm/traps.h
@@ -14,7 +14,6 @@
asmlinkage void debug(void);
asmlinkage void nmi(void);
asmlinkage void int3(void);
-asmlinkage void device_not_available(void);
#ifdef CONFIG_X86_64
asmlinkage void double_fault(void);
#endif
@@ -37,7 +36,6 @@ asmlinkage void simd_coprocessor_error(v
asmlinkage void xen_xennmi(void);
asmlinkage void xen_xendebug(void);
asmlinkage void xen_int3(void);
-asmlinkage void xen_device_not_available(void);
asmlinkage void xen_double_fault(void);
asmlinkage void xen_coprocessor_segment_overrun(void);
asmlinkage void xen_invalid_TSS(void);
@@ -57,7 +55,6 @@ asmlinkage void xen_simd_coprocessor_err
dotraplinkage void do_debug(struct pt_regs *regs, long error_code);
dotraplinkage void do_nmi(struct pt_regs *regs, long error_code);
dotraplinkage void do_int3(struct pt_regs *regs, long error_code);
-dotraplinkage void do_device_not_available(struct pt_regs *regs, long error_code);
#if defined(CONFIG_X86_64) || defined(CONFIG_DOUBLEFAULT)
dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code, unsigned long cr2);
#endif
--- a/arch/x86/kernel/idt.c
+++ b/arch/x86/kernel/idt.c
@@ -74,7 +74,7 @@ static const __initconst struct idt_data
INTG(X86_TRAP_NMI, nmi),
INTG(X86_TRAP_BR, asm_exc_bounds),
INTG(X86_TRAP_UD, asm_exc_invalid_op),
- INTG(X86_TRAP_NM, device_not_available),
+ INTG(X86_TRAP_NM, asm_exc_device_not_available),
INTG(X86_TRAP_OLD_MF, coprocessor_segment_overrun),
INTG(X86_TRAP_TS, invalid_TSS),
INTG(X86_TRAP_NP, segment_not_present),
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -920,8 +920,7 @@ do_spurious_interrupt_bug(struct pt_regs
*/
}
-dotraplinkage void
-do_device_not_available(struct pt_regs *regs, long error_code)
+DEFINE_IDTENTRY(exc_device_not_available)
{
unsigned long cr0 = read_cr0();
@@ -949,10 +948,9 @@ do_device_not_available(struct pt_regs *
* to kill the task than getting stuck in a never-ending
* loop of #NM faults.
*/
- die("unexpected #NM exception", regs, error_code);
+ die("unexpected #NM exception", regs, 0);
}
}
-NOKPROBE_SYMBOL(do_device_not_available);
#ifdef CONFIG_X86_32
dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code)
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -623,7 +623,7 @@ static struct trap_array_entry trap_arra
TRAP_ENTRY(exc_divide_error, false ),
TRAP_ENTRY(exc_bounds, false ),
TRAP_ENTRY(exc_invalid_op, false ),
- { device_not_available, xen_device_not_available, false },
+ TRAP_ENTRY(exc_device_not_available, false ),
{ coprocessor_segment_overrun, xen_coprocessor_segment_overrun, false },
{ invalid_TSS, xen_invalid_TSS, false },
{ segment_not_present, xen_segment_not_present, false },
--- a/arch/x86/xen/xen-asm_64.S
+++ b/arch/x86/xen/xen-asm_64.S
@@ -36,7 +36,7 @@ xen_pv_trap xennmi
xen_pv_trap asm_exc_overflow
xen_pv_trap asm_exc_bounds
xen_pv_trap asm_exc_invalid_op
-xen_pv_trap device_not_available
+xen_pv_trap asm_exc_device_not_available
xen_pv_trap double_fault
xen_pv_trap coprocessor_segment_overrun
xen_pv_trap invalid_TSS
next prev parent reply other threads:[~2020-03-08 23:25 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-08 23:14 [patch part-III V2 00/23] x86/entry: Consolidation - Part III (simple exceptions) Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 01/23] x86/traps: Split trap numbers out in a seperate header Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 02/23] x86/entry/64: Avoid pointless code when CONTEXT_TRACKING=n Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 03/23] x86/entry/64: Reorder idtentries Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 04/23] x86/entry: Distangle idtentry Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 05/23] x86/entry/32: Provide macro to emit IDT entry stubs Thomas Gleixner
2020-03-09 5:08 ` Brian Gerst
2020-03-09 7:01 ` Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 06/23] x86/idtentry: Provide macros to define/declare IDT entry points Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 07/23] x86/traps: Prepare for using DEFINE_IDTENTRY Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 08/23] x86/entry: Convert Divide Error to IDTENTRY Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 09/23] x86/entry: Convert Overflow exception " Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 10/23] x86/entry: Convert Bounds " Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 11/23] x86/entry: Convert Invalid Opcode " Thomas Gleixner
2020-03-08 23:14 ` Thomas Gleixner [this message]
2020-03-08 23:14 ` [patch part-III V2 13/23] x86/entry: Convert Coprocessor segment overrun " Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 14/23] x86/entry: Provide IDTENTRY_ERRORCODE Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 15/23] x86/entry: Convert Invalid TSS exception to IDTENTRY Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 16/23] x86/entry: Convert Segment not present " Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 17/23] x86/entry: Convert Stack segment " Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 18/23] x86/entry: Convert General protection " Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 19/23] x86/entry: Convert Spurious interrupt bug " Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 20/23] x86/entry: Convert Coprocessor error " Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 21/23] x86/entry: Convert Alignment check " Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 22/23] x86/entry: Convert SIMD coprocessor error " Thomas Gleixner
2020-03-08 23:14 ` [patch part-III V2 23/23] x86/entry/32: Convert IRET exception to IDTENTRY_SW Thomas Gleixner
2020-03-09 9:32 ` [patch part-III V2 00/23] x86/entry: Consolidation - Part III (simple exceptions) Jürgen Groß
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