Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757933Ab3FGXGx (ORCPT ); Fri, 7 Jun 2013 19:06:53 -0400 Received: from mail-ie0-f175.google.com ([209.85.223.175]:44499 "EHLO mail-ie0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757687Ab3FGXDy (ORCPT ); Fri, 7 Jun 2013 19:03:54 -0400 From: David Daney To: linux-mips@linux-mips.org, ralf@linux-mips.org, kvm@vger.kernel.org, Sanjay Lal Cc: linux-kernel@vger.kernel.org, David Daney Subject: [PATCH 23/31] mips/kvm: Hook into CP unusable exception handler. Date: Fri, 7 Jun 2013 16:03:27 -0700 Message-Id: <1370646215-6543-24-git-send-email-ddaney.cavm@gmail.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1370646215-6543-1-git-send-email-ddaney.cavm@gmail.com> References: <1370646215-6543-1-git-send-email-ddaney.cavm@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1230 Lines: 43 From: David Daney The MIPS VZ KVM code needs this to be able to manage the FPU. Signed-off-by: David Daney --- arch/mips/kernel/traps.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index fca0a2f..2bdeb32 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -56,6 +56,7 @@ #include #include #include +#include extern void check_wait(void); extern asmlinkage void rollback_handle_int(void); @@ -1045,6 +1046,13 @@ asmlinkage void do_cpu(struct pt_regs *regs) int status; unsigned long __maybe_unused flags; +#ifdef CONFIG_KVM_MIPSVZ + if (test_tsk_thread_flag(current, TIF_GUESTMODE)) { + if (mipsvz_cp_unusable(regs)) + return; + } +#endif + die_if_kernel("do_cpu invoked from kernel context!", regs); cpid = (regs->cp0_cause >> CAUSEB_CE) & 3; -- 1.7.11.7 -- 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/