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Date: Thu, 29 Mar 2007 21:06:57 +1000
From: Rusty Russell <rusty@...tcorp.com.au>
To: Andi Kleen <ak@....de>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Jeremy Fitzhardinge <jeremy@...source.com>,
Gerd Hoffmann <kraxel@...e.de>,
Alan <alan@...rguk.ukuu.org.uk>, Ingo Molnar <mingo@...e.hu>,
lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ignore vgacon if hardware not present
On Thu, 2007-03-29 at 12:36 +0200, Andi Kleen wrote:
> On Thu, Mar 29, 2007 at 05:46:48PM +1000, Rusty Russell wrote:
> > (Did this fall through the cracks? I don't see it in -mm. It's
> > standalone, and saves some silly code in lguest and presumably others).
>
> Normally it should go to some some console maintainer?
Hmm, but who?
> Ok I can add it.
Thanks. While you're in a patch-applying mood, how about this?
Cheers,
Rusty.
==
Use X86_EFLAGS_IF in irqflags.h.
Move X86_EFLAGS_IF et al out to a new header: processor-flags.h, so we
can include it from irqflags.h and use it in raw_irqs_disabled_flags().
As a side-effect, we could now use these flags in .S files.
Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
---
include/asm-i386/irqflags.h | 3 ++-
include/asm-i386/processor-flags.h | 26 ++++++++++++++++++++++++++
include/asm-i386/processor.h | 22 +---------------------
3 files changed, 29 insertions(+), 22 deletions(-)
===================================================================
--- /dev/null
+++ b/include/asm-i386/processor-flags.h
@@ -0,0 +1,26 @@
+#ifndef __ASM_I386_PROCESSOR_FLAGS_H
+#define __ASM_I386_PROCESSOR_FLAGS_H
+/* Various flags defined: can be included from assembler. */
+
+/*
+ * EFLAGS bits
+ */
+#define X86_EFLAGS_CF 0x00000001 /* Carry Flag */
+#define X86_EFLAGS_PF 0x00000004 /* Parity Flag */
+#define X86_EFLAGS_AF 0x00000010 /* Auxillary carry Flag */
+#define X86_EFLAGS_ZF 0x00000040 /* Zero Flag */
+#define X86_EFLAGS_SF 0x00000080 /* Sign Flag */
+#define X86_EFLAGS_TF 0x00000100 /* Trap Flag */
+#define X86_EFLAGS_IF 0x00000200 /* Interrupt Flag */
+#define X86_EFLAGS_DF 0x00000400 /* Direction Flag */
+#define X86_EFLAGS_OF 0x00000800 /* Overflow Flag */
+#define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
+#define X86_EFLAGS_NT 0x00004000 /* Nested Task */
+#define X86_EFLAGS_RF 0x00010000 /* Resume Flag */
+#define X86_EFLAGS_VM 0x00020000 /* Virtual Mode */
+#define X86_EFLAGS_AC 0x00040000 /* Alignment Check */
+#define X86_EFLAGS_VIF 0x00080000 /* Virtual Interrupt Flag */
+#define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */
+#define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */
+
+#endif /* __ASM_I386_PROCESSOR_FLAGS_H */
===================================================================
--- a/include/asm-i386/irqflags.h
+++ b/include/asm-i386/irqflags.h
@@ -9,6 +9,7 @@
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
+#include <asm/processor-flags.h>
#ifndef __ASSEMBLY__
static inline unsigned long native_save_fl(void)
@@ -119,7 +120,7 @@ static inline unsigned long __raw_local_
static inline int raw_irqs_disabled_flags(unsigned long flags)
{
- return !(flags & (1 << 9));
+ return !(flags & X86_EFLAGS_IF);
}
static inline int raw_irqs_disabled(void)
===================================================================
--- a/include/asm-i386/processor.h
+++ b/include/asm-i386/processor.h
@@ -21,6 +21,7 @@
#include <asm/percpu.h>
#include <linux/cpumask.h>
#include <linux/init.h>
+#include <asm/processor-flags.h>
/* flag for disabling the tsc */
extern int tsc_disable;
@@ -125,27 +126,6 @@ extern void detect_ht(struct cpuinfo_x86
#else
static inline void detect_ht(struct cpuinfo_x86 *c) {}
#endif
-
-/*
- * EFLAGS bits
- */
-#define X86_EFLAGS_CF 0x00000001 /* Carry Flag */
-#define X86_EFLAGS_PF 0x00000004 /* Parity Flag */
-#define X86_EFLAGS_AF 0x00000010 /* Auxillary carry Flag */
-#define X86_EFLAGS_ZF 0x00000040 /* Zero Flag */
-#define X86_EFLAGS_SF 0x00000080 /* Sign Flag */
-#define X86_EFLAGS_TF 0x00000100 /* Trap Flag */
-#define X86_EFLAGS_IF 0x00000200 /* Interrupt Flag */
-#define X86_EFLAGS_DF 0x00000400 /* Direction Flag */
-#define X86_EFLAGS_OF 0x00000800 /* Overflow Flag */
-#define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
-#define X86_EFLAGS_NT 0x00004000 /* Nested Task */
-#define X86_EFLAGS_RF 0x00010000 /* Resume Flag */
-#define X86_EFLAGS_VM 0x00020000 /* Virtual Mode */
-#define X86_EFLAGS_AC 0x00040000 /* Alignment Check */
-#define X86_EFLAGS_VIF 0x00080000 /* Virtual Interrupt Flag */
-#define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */
-#define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */
static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx)
-
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