From ae5da273fe3352febd38658d8d34484cbcfb3423 Mon Sep 17 00:00:00 2001 From: Zachary Amsden Date: Tue, 13 Feb 2007 13:26:21 +0100 Subject: [PATCH] i386: SMP boot hook for paravirt Add VMI SMP boot hook. We emulate a regular boot sequence and use the same APIC IPI initiation, we just poke magic values to load into the CPU state when the startup IPI is received, rather than having to jump through a real mode trampoline. This is all that was needed to get SMP to work. Signed-off-by: Zachary Amsden Signed-off-by: Andi Kleen Cc: Andi Kleen Cc: Jeremy Fitzhardinge Cc: Rusty Russell Cc: Chris Wright Signed-off-by: Andrew Morton --- include/asm-i386/paravirt.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/asm-i386/paravirt.h') diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h index 38e5164bd0e7..6ccf36499b2a 100644 --- a/include/asm-i386/paravirt.h +++ b/include/asm-i386/paravirt.h @@ -151,6 +151,8 @@ struct paravirt_ops /* These two are jmp to, not actually called. */ void (fastcall *irq_enable_sysexit)(void); void (fastcall *iret)(void); + + void (fastcall *startup_ipi_hook)(int phys_apicid, unsigned long start_eip, unsigned long start_esp); }; /* Mark a paravirt probe function. */ @@ -323,6 +325,13 @@ static inline unsigned long apic_read(unsigned long reg) } #endif +#ifdef CONFIG_SMP +static inline void startup_ipi_hook(int phys_apicid, unsigned long start_eip, + unsigned long start_esp) +{ + return paravirt_ops.startup_ipi_hook(phys_apicid, start_eip, start_esp); +} +#endif #define __flush_tlb() paravirt_ops.flush_tlb_user() #define __flush_tlb_global() paravirt_ops.flush_tlb_kernel() -- cgit v1.2.3-59-g8ed1b