diff options
| author | Zachary Amsden <zach@vmware.com> | 2007-02-13 13:26:21 +0100 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-02-13 13:26:21 +0100 |
| commit | ae5da273fe3352febd38658d8d34484cbcfb3423 (patch) | |
| tree | 70f619e6c0195bd2684b897d37bde37daa865c86 /arch/i386/kernel | |
| parent | 8b15114434998a78aa50f8559d69c7a400cff267 (diff) | |
| download | op-kernel-dev-ae5da273fe3352febd38658d8d34484cbcfb3423.zip op-kernel-dev-ae5da273fe3352febd38658d8d34484cbcfb3423.tar.gz | |
[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 <zach@vmware.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Diffstat (limited to 'arch/i386/kernel')
| -rw-r--r-- | arch/i386/kernel/paravirt.c | 2 | ||||
| -rw-r--r-- | arch/i386/kernel/smpboot.c | 7 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/i386/kernel/paravirt.c b/arch/i386/kernel/paravirt.c index 4dfdac4..5bf8105 100644 --- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -572,6 +572,8 @@ struct paravirt_ops paravirt_ops = { .irq_enable_sysexit = native_irq_enable_sysexit, .iret = native_iret, + + .startup_ipi_hook = (void *)native_nop, }; /* diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c index 8c6c8c52..1908afa2 100644 --- a/arch/i386/kernel/smpboot.c +++ b/arch/i386/kernel/smpboot.c @@ -835,6 +835,13 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip) num_starts = 0; /* + * Paravirt / VMI wants a startup IPI hook here to set up the + * target processor state. + */ + startup_ipi_hook(phys_apicid, (unsigned long) start_secondary, + (unsigned long) stack_start.esp); + + /* * Run STARTUP IPI loop. */ Dprintk("#startup loops: %d.\n", num_starts); |
