16c00db4bb
Pull AFS fixes from David Howells:
"Here's a set of patches that fix a number of bugs in the in-kernel AFS
client, including:
- Fix directory locking to not use individual page locks for
directory reading/scanning but rather to use a semaphore on the
afs_vnode struct as the directory contents must be read in a single
blob and data from different reads must not be mixed as the entire
contents may be shuffled about between reads.
- Fix address list parsing to handle port specifiers correctly.
- Only give up callback records on a server if we actually talked to
that server (we might not be able to access a server).
- Fix some callback handling bugs, including refcounting,
whole-volume callbacks and when callbacks actually get broken in
response to a CB.CallBack op.
- Fix some server/address rotation bugs, including giving up if we
can't probe a server; giving up if a server says it doesn't have a
volume, but there are more servers to try.
- Fix the decoding of fetched statuses to be OpenAFS compatible.
- Fix the handling of server lookups in Cache Manager ops (such as
CB.InitCallBackState3) to use a UUID if possible and to handle no
server being found.
- Fix a bug in server lookup where not all addresses are compared.
- Fix the non-encryption of calls that prevents some servers from
being accessed (this also requires an AF_RXRPC patch that has
already gone in through the net tree).
There's also a patch that adds tracepoints to log Cache Manager ops
that don't find a matching server, either by UUID or by address"
* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix the non-encryption of calls
afs: Fix CB.CallBack handling
afs: Fix whole-volume callback handling
afs: Fix afs_find_server search loop
afs: Fix the handling of an unfound server in CM operations
afs: Add a tracepoint to record callbacks from unlisted servers
afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
afs: Fix VNOVOL handling in address rotation
afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
afs: Fix server rotation's handling of fileserver probe failure
afs: Fix refcounting in callback registration
afs: Fix giving up callbacks on server destruction
afs: Fix address list parsing
afs: Fix directory page locking
100 lines
1.9 KiB
ArmAsm
100 lines
1.9 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/linkage.h>
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#define AX 0
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#define BX 1 * 8
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#define CX 2 * 8
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#define DX 3 * 8
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#define SI 4 * 8
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#define DI 5 * 8
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#define BP 6 * 8
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#define SP 7 * 8
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#define IP 8 * 8
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#define FLAGS 9 * 8
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#define CS 10 * 8
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#define SS 11 * 8
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#define DS 12 * 8
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#define ES 13 * 8
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#define FS 14 * 8
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#define GS 15 * 8
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#define R8 16 * 8
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#define R9 17 * 8
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#define R10 18 * 8
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#define R11 19 * 8
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#define R12 20 * 8
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#define R13 21 * 8
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#define R14 22 * 8
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#define R15 23 * 8
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.text
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#ifdef HAVE_ARCH_X86_64_SUPPORT
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ENTRY(perf_regs_load)
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movq %rax, AX(%rdi)
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movq %rbx, BX(%rdi)
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movq %rcx, CX(%rdi)
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movq %rdx, DX(%rdi)
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movq %rsi, SI(%rdi)
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movq %rdi, DI(%rdi)
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movq %rbp, BP(%rdi)
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leaq 8(%rsp), %rax /* exclude this call. */
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movq %rax, SP(%rdi)
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movq 0(%rsp), %rax
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movq %rax, IP(%rdi)
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movq $0, FLAGS(%rdi)
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movq $0, CS(%rdi)
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movq $0, SS(%rdi)
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movq $0, DS(%rdi)
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movq $0, ES(%rdi)
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movq $0, FS(%rdi)
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movq $0, GS(%rdi)
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movq %r8, R8(%rdi)
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movq %r9, R9(%rdi)
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movq %r10, R10(%rdi)
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movq %r11, R11(%rdi)
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movq %r12, R12(%rdi)
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movq %r13, R13(%rdi)
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movq %r14, R14(%rdi)
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movq %r15, R15(%rdi)
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ret
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ENDPROC(perf_regs_load)
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#else
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ENTRY(perf_regs_load)
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push %edi
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movl 8(%esp), %edi
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movl %eax, AX(%edi)
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movl %ebx, BX(%edi)
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movl %ecx, CX(%edi)
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movl %edx, DX(%edi)
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movl %esi, SI(%edi)
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pop %eax
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movl %eax, DI(%edi)
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movl %ebp, BP(%edi)
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leal 4(%esp), %eax /* exclude this call. */
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movl %eax, SP(%edi)
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movl 0(%esp), %eax
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movl %eax, IP(%edi)
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movl $0, FLAGS(%edi)
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movl $0, CS(%edi)
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movl $0, SS(%edi)
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movl $0, DS(%edi)
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movl $0, ES(%edi)
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movl $0, FS(%edi)
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movl $0, GS(%edi)
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ret
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ENDPROC(perf_regs_load)
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#endif
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/*
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* We need to provide note.GNU-stack section, saying that we want
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* NOT executable stack. Otherwise the final linking will assume that
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* the ELF stack should not be restricted at all and set it RWX.
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*/
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.section .note.GNU-stack,"",@progbits
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