/*
 * common eBPF ELF operations.
 *
 * Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
 * Copyright (C) 2015 Wang Nan <wangnan0@huawei.com>
 * Copyright (C) 2015 Huawei Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License (not later!)
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not,  see <http://www.gnu.org/licenses>
 */
#ifndef __BPF_BPF_H
#define __BPF_BPF_H

#include <linux/bpf.h>

int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size,
		   int max_entries, __u32 map_flags);

/* Recommend log buffer size */
#define BPF_LOG_BUF_SIZE 65536
int bpf_load_program(enum bpf_prog_type type, struct bpf_insn *insns,
		     size_t insns_cnt, char *license,
		     __u32 kern_version, char *log_buf,
		     size_t log_buf_sz);

int bpf_map_update_elem(int fd, void *key, void *value,
			__u64 flags);

int bpf_map_lookup_elem(int fd, void *key, void *value);
int bpf_map_delete_elem(int fd, void *key);
int bpf_map_get_next_key(int fd, void *key, void *next_key);
int bpf_obj_pin(int fd, const char *pathname);
int bpf_obj_get(const char *pathname);
int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type);
int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type);


#endif
rivers/usb/gadget/udc/bdc/bdc_cmd.c'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/gadget/udc/bdc/bdc_cmd.c?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/gadget/udc/bdc/bdc_cmd.c?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/gadget/udc/bdc/bdc_cmd.c?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/drivers/usb/gadget/udc/bdc/bdc_cmd.c'>
<input type='hidden' name='id' value='740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/gadget?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'>gadget</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/gadget/udc?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'>udc</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/gadget/udc/bdc?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'>bdc</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/gadget/udc/bdc/bdc_cmd.c?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7'>bdc_cmd.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/gadget/udc/bdc/bdc_cmd.c?id=740117a8e2b0e89c5fd6f1d5bbc12f87c46c80d7&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
lue='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Benjamin Herrenschmidt &lt;benh@kernel.crashing.org&gt;</td><td class='right'>2017-02-03 17:10:28 +1100</td></tr>
<tr><th>committer</th><td>Michael Ellerman &lt;mpe@ellerman.id.au&gt;</td><td class='right'>2017-02-08 23:36:29 +1100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/scsi/scsi_netlink.h?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>d7df2443cd5f67fc6ee7c05a88e4996e8177f91b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/uapi/scsi/scsi_netlink.h?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>098a7c0ca4fceb8a65cb1f693c9d71990388933d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/uapi/scsi/scsi_netlink.h?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>include/uapi/scsi/scsi_netlink.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/scsi/scsi_netlink.h?id=a0615a16f7d0ceb5804d295203c302d496d8ee91'>a0615a16f7d0ceb5804d295203c302d496d8ee91</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/uapi/scsi/scsi_netlink.h?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b&amp;id2=a0615a16f7d0ceb5804d295203c302d496d8ee91'>diff</a>)</td></tr></table>
<div class='commit-subject'>powerpc/mm: Fix spurrious segfaults on radix with autonuma</div><div class='commit-msg'>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 &lt;benh@kernel.crashing.org&gt;
Reviewed-by: Aneesh Kumar K.V &lt;aneesh.kumar@linux.vnet.ibm.com&gt;
Acked-by: Balbir Singh &lt;bsingharora@gmail.com&gt;
Signed-off-by: Michael Ellerman &lt;mpe@ellerman.id.au&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>Diffstat</a> (limited to 'include/uapi/scsi/scsi_netlink.h')</div><table summary='diffstat' class='diffstat'>