Register the new kernel ('ring 0') stack pointer with the hypervisor during context switch. Signed-off-by: Ian Pratt Signed-off-by: Christian Limpach Signed-off-by: Chris Wright --- include/asm-i386/mach-default/mach_processor.h | 7 +++++++ include/asm-i386/mach-xen/mach_processor.h | 8 ++++++++ include/asm-i386/processor.h | 1 + 3 files changed, 16 insertions(+) diff -r 60dd30eed8f3 include/asm-i386/mach-default/mach_processor.h --- a/include/asm-i386/mach-default/mach_processor.h Fri Mar 31 15:36:12 2006 +0100 +++ b/include/asm-i386/mach-default/mach_processor.h Fri Mar 31 15:38:00 2006 +0100 @@ -4,4 +4,11 @@ #define CPUID cpuid #define CPUID_STR "cpuid" +#ifndef __ASSEMBLY__ +static inline void mach_update_kernel_stack(unsigned long esp0, + unsigned short ss0) +{ +} +#endif + #endif /* __ASM_MACH_PROCESSOR_H */ diff -r 60dd30eed8f3 include/asm-i386/mach-xen/mach_processor.h --- a/include/asm-i386/mach-xen/mach_processor.h Fri Mar 31 15:36:12 2006 +0100 +++ b/include/asm-i386/mach-xen/mach_processor.h Fri Mar 31 15:38:00 2006 +0100 @@ -6,4 +6,12 @@ #define CPUID XEN_CPUID #define CPUID_STR XEN_CPUID +#ifndef __ASSEMBLY__ +static inline void mach_update_kernel_stack(unsigned long esp0, + unsigned short ss0) +{ + HYPERVISOR_stack_switch(ss0, esp0); +} +#endif + #endif /* __ASM_MACH_PROCESSOR_H */ diff -r 60dd30eed8f3 include/asm-i386/processor.h --- a/include/asm-i386/processor.h Fri Mar 31 15:36:12 2006 +0100 +++ b/include/asm-i386/processor.h Fri Mar 31 15:38:00 2006 +0100 @@ -500,6 +500,7 @@ static inline void load_esp0(struct tss_ tss->ss1 = thread->sysenter_cs; wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0); } + mach_update_kernel_stack(tss->esp0, tss->ss0); } #define start_thread(regs, new_eip, new_esp) do { \ -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/