diff options
| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-06-27 21:04:03 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 13:16:05 +0200 |
| commit | df366e9822beca97115ba9745cbe1ea1f26fb111 (patch) | |
| tree | c41f5c68b9bbe362369d8ef2b1292c187e9fb21f /include/asm-x86/irqflags.h | |
| parent | x86: let setup_arch call init_apic_mappings for 32bit (diff) | |
| download | linux-df366e9822beca97115ba9745cbe1ea1f26fb111.tar.xz linux-df366e9822beca97115ba9745cbe1ea1f26fb111.zip | |
x86_64: fix non-paravirt compilation
Make sure SWAPGS and PARAVIRT_ADJUST_EXCEPTION_FRAME are properly
defined when CONFIG_PARAVIRT is off.
Fixes Ingo's build failure:
arch/x86/kernel/entry_64.S: Assembler messages:
arch/x86/kernel/entry_64.S:1201: Error: invalid character '_' in mnemonic
arch/x86/kernel/entry_64.S:1205: Error: invalid character '_' in mnemonic
arch/x86/kernel/entry_64.S:1209: Error: invalid character '_' in mnemonic
arch/x86/kernel/entry_64.S:1213: Error: invalid character '_' in mnemonic
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Mark McLoughlin <markmc@redhat.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Stephen Tweedie <sct@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/irqflags.h')
| -rw-r--r-- | include/asm-x86/irqflags.h | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/include/asm-x86/irqflags.h b/include/asm-x86/irqflags.h index d17e1f623dbb..17e7a1701c97 100644 --- a/include/asm-x86/irqflags.h +++ b/include/asm-x86/irqflags.h @@ -111,7 +111,20 @@ static inline unsigned long __raw_local_irq_save(void) #define DISABLE_INTERRUPTS(x) cli #ifdef CONFIG_X86_64 +#define SWAPGS swapgs +/* + * Currently paravirt can't handle swapgs nicely when we + * don't have a stack we can rely on (such as a user space + * stack). So we either find a way around these or just fault + * and emulate if a guest tries to call swapgs directly. + * + * Either way, this is a good way to document that we don't + * have a reliable stack. x86_64 only. + */ #define SWAPGS_UNSAFE_STACK swapgs + +#define PARAVIRT_ADJUST_EXCEPTION_FRAME /* */ + #define INTERRUPT_RETURN iretq #define USERGS_SYSRET64 \ swapgs; \ @@ -177,15 +190,6 @@ static inline void trace_hardirqs_fixup(void) #else #ifdef CONFIG_X86_64 -/* - * Currently paravirt can't handle swapgs nicely when we - * don't have a stack we can rely on (such as a user space - * stack). So we either find a way around these or just fault - * and emulate if a guest tries to call swapgs directly. - * - * Either way, this is a good way to document that we don't - * have a reliable stack. x86_64 only. - */ #define ARCH_TRACE_IRQS_ON call trace_hardirqs_on_thunk #define ARCH_TRACE_IRQS_OFF call trace_hardirqs_off_thunk #define ARCH_LOCKDEP_SYS_EXIT call lockdep_sys_exit_thunk |