1. 12 12月, 2016 1 次提交
  2. 09 12月, 2016 3 次提交
  3. 08 12月, 2016 4 次提交
    • K
      xen/pci: Bubble up error and fix description. · 577f79e4
      Konrad Rzeszutek Wilk 提交于
      The function is never called under PV guests, and only shows up
      when MSI (or MSI-X) cannot be allocated. Convert the message
      to include the error value.
      Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Reviewed-by: NJuergen Gross <jgross@suse.com>
      Signed-off-by: NJuergen Gross <jgross@suse.com>
      577f79e4
    • P
      xen: xenbus: set error code on failure · 2466d4b9
      Pan Bian 提交于
      Variable err is initialized with 0. As a result, the return value may
      be 0 even if get_zeroed_page() fails to allocate memory. This patch fixes
      the bug, initializing err with "-ENOMEM".
      Signed-off-by: NPan Bian <bianpan2016@163.com>
      Reviewed-by: NJuergen Gross <jgross@suse.com>
      Signed-off-by: NJuergen Gross <jgross@suse.com>
      2466d4b9
    • P
      xen: set error code on failures · 0fdb4744
      Pan Bian 提交于
      Variable rc is reset in the loop, and its value will be non-negative
      during the second and after repeat of the loop. If it fails to allocate
      memory then, it may return a non-negative integer, which indicates no
      error. This patch fixes the bug, assigning "-ENOMEM" to rc when
      kzalloc() or alloc_page() returns NULL, and removing the initialization
      of rc outside of the loop.
      Signed-off-by: NPan Bian <bianpan2016@163.com>
      Reviewed-by: NJuergen Gross <jgross@suse.com>
      Signed-off-by: NJuergen Gross <jgross@suse.com>
      0fdb4744
    • J
      arm/xen: Use alloc_percpu rather than __alloc_percpu · 24d5373d
      Julien Grall 提交于
      The function xen_guest_init is using __alloc_percpu with an alignment
      which are not power of two.
      
      However, the percpu allocator never supported alignments which are not power
      of two and has always behaved incorectly in thise case.
      
      Commit 3ca45a46 "percpu: ensure requested alignment is power of two"
      introduced a check which trigger a warning [1] when booting linux-next
      on Xen. But in reality this bug was always present.
      
      This can be fixed by replacing the call to __alloc_percpu with
      alloc_percpu. The latter will use an alignment which are a power of two.
      
      [1]
      
      [    0.023921] illegal size (48) or align (48) for percpu allocation
      [    0.024167] ------------[ cut here ]------------
      [    0.024344] WARNING: CPU: 0 PID: 1 at linux/mm/percpu.c:892 pcpu_alloc+0x88/0x6c0
      [    0.024584] Modules linked in:
      [    0.024708]
      [    0.024804] CPU: 0 PID: 1 Comm: swapper/0 Not tainted
      4.9.0-rc7-next-20161128 #473
      [    0.025012] Hardware name: Foundation-v8A (DT)
      [    0.025162] task: ffff80003d870000 task.stack: ffff80003d844000
      [    0.025351] PC is at pcpu_alloc+0x88/0x6c0
      [    0.025490] LR is at pcpu_alloc+0x88/0x6c0
      [    0.025624] pc : [<ffff00000818e678>] lr : [<ffff00000818e678>]
      pstate: 60000045
      [    0.025830] sp : ffff80003d847cd0
      [    0.025946] x29: ffff80003d847cd0 x28: 0000000000000000
      [    0.026147] x27: 0000000000000000 x26: 0000000000000000
      [    0.026348] x25: 0000000000000000 x24: 0000000000000000
      [    0.026549] x23: 0000000000000000 x22: 00000000024000c0
      [    0.026752] x21: ffff000008e97000 x20: 0000000000000000
      [    0.026953] x19: 0000000000000030 x18: 0000000000000010
      [    0.027155] x17: 0000000000000a3f x16: 00000000deadbeef
      [    0.027357] x15: 0000000000000006 x14: ffff000088f79c3f
      [    0.027573] x13: ffff000008f79c4d x12: 0000000000000041
      [    0.027782] x11: 0000000000000006 x10: 0000000000000042
      [    0.027995] x9 : ffff80003d847a40 x8 : 6f697461636f6c6c
      [    0.028208] x7 : 6120757063726570 x6 : ffff000008f79c84
      [    0.028419] x5 : 0000000000000005 x4 : 0000000000000000
      [    0.028628] x3 : 0000000000000000 x2 : 000000000000017f
      [    0.028840] x1 : ffff80003d870000 x0 : 0000000000000035
      [    0.029056]
      [    0.029152] ---[ end trace 0000000000000000 ]---
      [    0.029297] Call trace:
      [    0.029403] Exception stack(0xffff80003d847b00 to
                                     0xffff80003d847c30)
      [    0.029621] 7b00: 0000000000000030 0001000000000000
      ffff80003d847cd0 ffff00000818e678
      [    0.029901] 7b20: 0000000000000002 0000000000000004
      ffff000008f7c060 0000000000000035
      [    0.030153] 7b40: ffff000008f79000 ffff000008c4cd88
      ffff80003d847bf0 ffff000008101778
      [    0.030402] 7b60: 0000000000000030 0000000000000000
      ffff000008e97000 00000000024000c0
      [    0.030647] 7b80: 0000000000000000 0000000000000000
      0000000000000000 0000000000000000
      [    0.030895] 7ba0: 0000000000000035 ffff80003d870000
      000000000000017f 0000000000000000
      [    0.031144] 7bc0: 0000000000000000 0000000000000005
      ffff000008f79c84 6120757063726570
      [    0.031394] 7be0: 6f697461636f6c6c ffff80003d847a40
      0000000000000042 0000000000000006
      [    0.031643] 7c00: 0000000000000041 ffff000008f79c4d
      ffff000088f79c3f 0000000000000006
      [    0.031877] 7c20: 00000000deadbeef 0000000000000a3f
      [    0.032051] [<ffff00000818e678>] pcpu_alloc+0x88/0x6c0
      [    0.032229] [<ffff00000818ece8>] __alloc_percpu+0x18/0x20
      [    0.032409] [<ffff000008d9606c>] xen_guest_init+0x174/0x2f4
      [    0.032591] [<ffff0000080830f8>] do_one_initcall+0x38/0x130
      [    0.032783] [<ffff000008d90c34>] kernel_init_freeable+0xe0/0x248
      [    0.032995] [<ffff00000899a890>] kernel_init+0x10/0x100
      [    0.033172] [<ffff000008082ec0>] ret_from_fork+0x10/0x50
      Reported-by: NWei Chen <wei.chen@arm.com>
      Link: https://lkml.org/lkml/2016/11/28/669Signed-off-by: NJulien Grall <julien.grall@arm.com>
      Signed-off-by: NStefano Stabellini <sstabellini@kernel.org>
      Reviewed-by: NStefano Stabellini <sstabellini@kernel.org>
      Cc: stable@vger.kernel.org
      24d5373d
  4. 03 12月, 2016 1 次提交
  5. 30 11月, 2016 1 次提交
  6. 28 11月, 2016 1 次提交
  7. 24 11月, 2016 1 次提交
  8. 18 11月, 2016 1 次提交
  9. 17 11月, 2016 2 次提交
  10. 10 11月, 2016 1 次提交
    • A
      xen-netback: fix error handling output · 0f06ac3b
      Arnd Bergmann 提交于
      The connect function prints an unintialized error code after an
      earlier initialization was removed:
      
      drivers/net/xen-netback/xenbus.c: In function 'connect':
      drivers/net/xen-netback/xenbus.c:938:3: error: 'err' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      
      This prints it as -EINVAL instead, which seems to be the most
      appropriate error code. Before the patch that caused the warning,
      this would print a positive number returned by vsscanf() instead,
      which is also wrong. We probably don't need a backport though,
      as fixing the warning here should be sufficient.
      
      Fixes: f95842e7 ("xen: make use of xenbus_read_unsigned() in xen-netback")
      Fixes: 8d3d53b3 ("xen-netback: Add support for multiple queues")
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      Reviewed-by: NPaul Durrant <paul.durrant@citrix.com>
      Signed-off-by: NJuergen Gross <jgross@suse.com>
      0f06ac3b
  11. 07 11月, 2016 12 次提交
  12. 06 11月, 2016 12 次提交