From e5701b74ccfdbbb0b4d9abcc7d0c569bf5e5375b Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Mon, 4 May 2015 17:26:35 -0400 Subject: tile: support delivering NMIs for multicore backtrace A new hypervisor service was added some time ago (MDE 4.2.1 or later, or MDE 4.3 or later) that allows cores to request NMIs to be delivered to other cores. Use this facility to deliver a request that causes a backtrace to be generated on each core, and hook it into the magic SysRq functionality. Signed-off-by: Chris Metcalf --- arch/tile/kernel/hvglue.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/tile/kernel/hvglue.S') diff --git a/arch/tile/kernel/hvglue.S b/arch/tile/kernel/hvglue.S index 2ab456622391..d78ee2ad610c 100644 --- a/arch/tile/kernel/hvglue.S +++ b/arch/tile/kernel/hvglue.S @@ -71,4 +71,5 @@ gensym hv_flush_all, 0x6e0, 32 gensym hv_get_ipi_pte, 0x700, 32 gensym hv_set_pte_super_shift, 0x720, 32 gensym hv_console_set_ipi, 0x7e0, 32 -gensym hv_glue_internals, 0x800, 30720 +gensym hv_send_nmi, 0x820, 32 +gensym hv_glue_internals, 0x820, 30688 -- cgit v1.2.3