#ifndef _SCSI_SCSI_EH_H
#define _SCSI_SCSI_EH_H

#include <linux/scatterlist.h>

#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_common.h>
struct scsi_device;
struct Scsi_Host;

extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,
			       struct list_head *done_q);
extern void scsi_eh_flush_done_q(struct list_head *done_q);
extern void scsi_report_bus_reset(struct Scsi_Host *, int);
extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
extern int scsi_block_when_processing_errors(struct scsi_device *);
extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
					 struct scsi_sense_hdr *sshdr);
extern int scsi_check_sense(struct scsi_cmnd *);

static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
{
	return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
}

extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
				   u64 * info_out);

extern int scsi_ioctl_reset(struct scsi_device *, int __user *);

struct scsi_eh_save {
	/* saved state */
	int result;
	enum dma_data_direction data_direction;
	unsigned underflow;
	unsigned char cmd_len;
	unsigned char prot_op;
	unsigned char *cmnd;
	struct scsi_data_buffer sdb;
	struct request *next_rq;
	/* new command support */
	unsigned char eh_cmnd[BLK_MAX_CDB];
	struct scatterlist sense_sgl;
};

extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
		struct scsi_eh_save *ses, unsigned char *cmnd,
		int cmnd_size, unsigned sense_bytes);

extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
		struct scsi_eh_save *ses);

#endif /* _SCSI_SCSI_EH_H */
next.git/refs/?id=eb13da1a103a808c05267816fa4d30d603bfda5e'>refs</a><a class='active' href='/cgit.cgi/linux/net-next.git/log/include/dt-bindings/media/xilinx-vip.h'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/media/xilinx-vip.h?id=eb13da1a103a808c05267816fa4d30d603bfda5e'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/media/xilinx-vip.h?id=eb13da1a103a808c05267816fa4d30d603bfda5e'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/media/xilinx-vip.h?id=eb13da1a103a808c05267816fa4d30d603bfda5e'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/dt-bindings/media/xilinx-vip.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=eb13da1a103a808c05267816fa4d30d603bfda5e'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?id=eb13da1a103a808c05267816fa4d30d603bfda5e'>include</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/dt-bindings?id=eb13da1a103a808c05267816fa4d30d603bfda5e'>dt-bindings</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/dt-bindings/media?id=eb13da1a103a808c05267816fa4d30d603bfda5e'>media</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/dt-bindings/media/xilinx-vip.h?id=eb13da1a103a808c05267816fa4d30d603bfda5e'>xilinx-vip.h</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/include/dt-bindings/media/xilinx-vip.h?id=eb13da1a103a808c05267816fa4d30d603bfda5e&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
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/misc/cxl.h?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>d7df2443cd5f67fc6ee7c05a88e4996e8177f91b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/misc/cxl.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/misc/cxl.h?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>include/misc/cxl.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/misc/cxl.h?id=a0615a16f7d0ceb5804d295203c302d496d8ee91'>a0615a16f7d0ceb5804d295203c302d496d8ee91</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/misc/cxl.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/misc/cxl.h')</div><table summary='diffstat' class='diffstat'>