/********************************************************************* * * Filename: wrapper.h * Version: 1.2 * Description: IrDA SIR async wrapper layer * Status: Experimental. * Author: Dag Brattli * Created at: Mon Aug 4 20:40:53 1997 * Modified at: Tue Jan 11 12:37:29 2000 * Modified by: Dag Brattli * * Copyright (c) 1998-2000 Dag Brattli , * All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * ********************************************************************/ #ifndef WRAPPER_H #define WRAPPER_H #include #include #include #include /* iobuff_t */ #define BOF 0xc0 /* Beginning of frame */ #define XBOF 0xff #define EOF 0xc1 /* End of frame */ #define CE 0x7d /* Control escape */ #define STA BOF /* Start flag */ #define STO EOF /* End flag */ #define IRDA_TRANS 0x20 /* Asynchronous transparency modifier */ /* States for receiving a frame in async mode */ enum { OUTSIDE_FRAME, BEGIN_FRAME, LINK_ESCAPE, INSIDE_FRAME }; /* Proto definitions */ int async_wrap_skb(struct sk_buff *skb, __u8 *tx_buff, int buffsize); void async_unwrap_char(struct net_device *dev, struct net_device_stats *stats, iobuff_t *buf, __u8 byte); #endif nd/oss/sound_calls.h?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>treecommitdiff
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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /sound/oss/sound_calls.h
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'sound/oss/sound_calls.h')