Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753849Ab1DER0x (ORCPT ); Tue, 5 Apr 2011 13:26:53 -0400 Received: from db3ehsobe005.messaging.microsoft.com ([213.199.154.143]:49853 "EHLO DB3EHSOBE005.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752927Ab1DER0u (ORCPT ); Tue, 5 Apr 2011 13:26:50 -0400 X-SpamScore: 1 X-BigFish: VPS1(zzzz1202hzzz32i668h839h61h) X-Spam-TCS-SCL: 0:0 X-Forefront-Antispam-Report: KIP:(null);UIP:(null);IPVD:NLI;H:ausb3twp01.amd.com;RD:none;EFVD:NLI X-WSS-ID: 0LJ6WGG-01-YWO-02 X-M-MSG: From: Hans Rosenfeld To: , CC: , , , , , , Hans Rosenfeld Subject: [PATCH] x86-32, fpu: unbreak FPU exceptions on systems without SSE Date: Tue, 5 Apr 2011 19:26:32 +0200 Message-ID: <1302024392-610677-1-git-send-email-hans.rosenfeld@amd.com> X-Mailer: git-send-email 1.5.6.5 MIME-Version: 1.0 Content-Type: text/plain X-OriginatorOrg: amd.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1009 Lines: 31 On 32bit systems without SSE, FPU exceptions in user mode cause Oopses, BUGs, recursive faults and other nasty things. This was caused by commit 58a992b9cbaf449aeebd3575c3695a9eb5d95b5e: x86-32, fpu: Rewrite fpu_save_init() --- arch/x86/include/asm/i387.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h index ef32890..c9e09ea 100644 --- a/arch/x86/include/asm/i387.h +++ b/arch/x86/include/asm/i387.h @@ -237,7 +237,7 @@ static inline void fpu_save_init(struct fpu *fpu) } else if (use_fxsr()) { fpu_fxsave(fpu); } else { - asm volatile("fsave %[fx]; fwait" + asm volatile("fnsave %[fx]; fwait" : [fx] "=m" (fpu->state->fsave)); return; } -- 1.5.6.5 -- 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/