]> git.ipfire.org Git - thirdparty/kernel/stable-queue.git/commitdiff
3.14-stable patches
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 19 Jun 2015 19:09:23 +0000 (12:09 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 19 Jun 2015 19:09:23 +0000 (12:09 -0700)
added patches:
block-fix-ext_dev_lock-lockdep-report.patch
input-elantech-fix-detection-of-touchpads-where-the-revision-matches-a-known-rate.patch
input-synaptics-add-min-max-quirk-for-lenovo-s540.patch
usb-cp210x-add-id-for-hubz-dual-zigbee-and-z-wave-dongle.patch
usb-serial-ftdi_sio-add-support-for-a-motion-tracker-development-board.patch
x86-asm-irq-stop-relying-on-magic-jmp-behavior-for-early_idt_handlers.patch

queue-3.14/block-fix-ext_dev_lock-lockdep-report.patch [new file with mode: 0644]
queue-3.14/input-elantech-fix-detection-of-touchpads-where-the-revision-matches-a-known-rate.patch [new file with mode: 0644]
queue-3.14/input-synaptics-add-min-max-quirk-for-lenovo-s540.patch [new file with mode: 0644]
queue-3.14/series
queue-3.14/usb-cp210x-add-id-for-hubz-dual-zigbee-and-z-wave-dongle.patch [new file with mode: 0644]
queue-3.14/usb-serial-ftdi_sio-add-support-for-a-motion-tracker-development-board.patch [new file with mode: 0644]
queue-3.14/x86-asm-irq-stop-relying-on-magic-jmp-behavior-for-early_idt_handlers.patch [new file with mode: 0644]

diff --git a/queue-3.14/block-fix-ext_dev_lock-lockdep-report.patch b/queue-3.14/block-fix-ext_dev_lock-lockdep-report.patch
new file mode 100644 (file)
index 0000000..e72624e
--- /dev/null
@@ -0,0 +1,99 @@
+From 4d66e5e9b6d720d8463e11d027bd4ad91c8b1318 Mon Sep 17 00:00:00 2001
+From: Dan Williams <dan.j.williams@intel.com>
+Date: Wed, 10 Jun 2015 23:47:14 -0400
+Subject: block: fix ext_dev_lock lockdep report
+
+From: Dan Williams <dan.j.williams@intel.com>
+
+commit 4d66e5e9b6d720d8463e11d027bd4ad91c8b1318 upstream.
+
+ =================================
+ [ INFO: inconsistent lock state ]
+ 4.1.0-rc7+ #217 Tainted: G           O
+ ---------------------------------
+ inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
+ swapper/6/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
+  (ext_devt_lock){+.?...}, at: [<ffffffff8143a60c>] blk_free_devt+0x3c/0x70
+ {SOFTIRQ-ON-W} state was registered at:
+   [<ffffffff810bf6b1>] __lock_acquire+0x461/0x1e70
+   [<ffffffff810c1947>] lock_acquire+0xb7/0x290
+   [<ffffffff818ac3a8>] _raw_spin_lock+0x38/0x50
+   [<ffffffff8143a07d>] blk_alloc_devt+0x6d/0xd0  <-- take the lock in process context
+[..]
+  [<ffffffff810bf64e>] __lock_acquire+0x3fe/0x1e70
+  [<ffffffff810c00ad>] ? __lock_acquire+0xe5d/0x1e70
+  [<ffffffff810c1947>] lock_acquire+0xb7/0x290
+  [<ffffffff8143a60c>] ? blk_free_devt+0x3c/0x70
+  [<ffffffff818ac3a8>] _raw_spin_lock+0x38/0x50
+  [<ffffffff8143a60c>] ? blk_free_devt+0x3c/0x70
+  [<ffffffff8143a60c>] blk_free_devt+0x3c/0x70    <-- take the lock in softirq
+  [<ffffffff8143bfec>] part_release+0x1c/0x50
+  [<ffffffff8158edf6>] device_release+0x36/0xb0
+  [<ffffffff8145ac2b>] kobject_cleanup+0x7b/0x1a0
+  [<ffffffff8145aad0>] kobject_put+0x30/0x70
+  [<ffffffff8158f147>] put_device+0x17/0x20
+  [<ffffffff8143c29c>] delete_partition_rcu_cb+0x16c/0x180
+  [<ffffffff8143c130>] ? read_dev_sector+0xa0/0xa0
+  [<ffffffff810e0e0f>] rcu_process_callbacks+0x2ff/0xa90
+  [<ffffffff810e0dcf>] ? rcu_process_callbacks+0x2bf/0xa90
+  [<ffffffff81067e2e>] __do_softirq+0xde/0x600
+
+Neil sees this in his tests and it also triggers on pmem driver unbind
+for the libnvdimm tests.  This fix is on top of an initial fix by Keith
+for incorrect usage of mutex_lock() in this path: 2da78092dda1 "block:
+Fix dev_t minor allocation lifetime".  Both this and 2da78092dda1 are
+candidates for -stable.
+
+Fixes: 2da78092dda1 ("block: Fix dev_t minor allocation lifetime")
+Cc: Keith Busch <keith.busch@intel.com>
+Reported-by: NeilBrown <neilb@suse.de>
+Signed-off-by: Dan Williams <dan.j.williams@intel.com>
+Signed-off-by: Jens Axboe <axboe@fb.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ block/genhd.c |   12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+--- a/block/genhd.c
++++ b/block/genhd.c
+@@ -422,9 +422,9 @@ int blk_alloc_devt(struct hd_struct *par
+       /* allocate ext devt */
+       idr_preload(GFP_KERNEL);
+-      spin_lock(&ext_devt_lock);
++      spin_lock_bh(&ext_devt_lock);
+       idx = idr_alloc(&ext_devt_idr, part, 0, NR_EXT_DEVT, GFP_NOWAIT);
+-      spin_unlock(&ext_devt_lock);
++      spin_unlock_bh(&ext_devt_lock);
+       idr_preload_end();
+       if (idx < 0)
+@@ -449,9 +449,9 @@ void blk_free_devt(dev_t devt)
+               return;
+       if (MAJOR(devt) == BLOCK_EXT_MAJOR) {
+-              spin_lock(&ext_devt_lock);
++              spin_lock_bh(&ext_devt_lock);
+               idr_remove(&ext_devt_idr, blk_mangle_minor(MINOR(devt)));
+-              spin_unlock(&ext_devt_lock);
++              spin_unlock_bh(&ext_devt_lock);
+       }
+ }
+@@ -691,13 +691,13 @@ struct gendisk *get_gendisk(dev_t devt,
+       } else {
+               struct hd_struct *part;
+-              spin_lock(&ext_devt_lock);
++              spin_lock_bh(&ext_devt_lock);
+               part = idr_find(&ext_devt_idr, blk_mangle_minor(MINOR(devt)));
+               if (part && get_disk(part_to_disk(part))) {
+                       *partno = part->partno;
+                       disk = part_to_disk(part);
+               }
+-              spin_unlock(&ext_devt_lock);
++              spin_unlock_bh(&ext_devt_lock);
+       }
+       return disk;
diff --git a/queue-3.14/input-elantech-fix-detection-of-touchpads-where-the-revision-matches-a-known-rate.patch b/queue-3.14/input-elantech-fix-detection-of-touchpads-where-the-revision-matches-a-known-rate.patch
new file mode 100644 (file)
index 0000000..1159e79
--- /dev/null
@@ -0,0 +1,44 @@
+From 5f0ee9d17aae628b22be86966471db65be21f262 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Tue, 2 Jun 2015 10:40:50 -0700
+Subject: Input: elantech - fix detection of touchpads where the revision matches a known rate
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Hans de Goede <hdegoede@redhat.com>
+
+commit 5f0ee9d17aae628b22be86966471db65be21f262 upstream.
+
+Make the check to skip the rate check more lax, so that it applies
+to all hw_version 4 models.
+
+This fixes the touchpad not being detected properly on Asus PU551LA
+laptops.
+
+Reported-and-tested-by: David Zafra Gómez <dezeta@klo.es>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/input/mouse/elantech.c |    7 ++++---
+ 1 file changed, 4 insertions(+), 3 deletions(-)
+
+--- a/drivers/input/mouse/elantech.c
++++ b/drivers/input/mouse/elantech.c
+@@ -1271,10 +1271,11 @@ static bool elantech_is_signature_valid(
+               return true;
+       /*
+-       * Some models have a revision higher then 20. Meaning param[2] may
+-       * be 10 or 20, skip the rates check for these.
++       * Some hw_version >= 4 models have a revision higher then 20. Meaning
++       * that param[2] may be 10 or 20, skip the rates check for these.
+        */
+-      if (param[0] == 0x46 && (param[1] & 0xef) == 0x0f && param[2] < 40)
++      if ((param[0] & 0x0f) >= 0x06 && (param[1] & 0xaf) == 0x0f &&
++          param[2] < 40)
+               return true;
+       for (i = 0; i < ARRAY_SIZE(rates); i++)
diff --git a/queue-3.14/input-synaptics-add-min-max-quirk-for-lenovo-s540.patch b/queue-3.14/input-synaptics-add-min-max-quirk-for-lenovo-s540.patch
new file mode 100644 (file)
index 0000000..4bc10ab
--- /dev/null
@@ -0,0 +1,43 @@
+From 7f2ca8b55aeff1fe51ed3570200ef88a96060917 Mon Sep 17 00:00:00 2001
+From: Peter Hutterer <peter.hutterer@who-t.net>
+Date: Mon, 8 Jun 2015 10:17:32 -0700
+Subject: Input: synaptics - add min/max quirk for Lenovo S540
+
+From: Peter Hutterer <peter.hutterer@who-t.net>
+
+commit 7f2ca8b55aeff1fe51ed3570200ef88a96060917 upstream.
+
+https://bugzilla.redhat.com/show_bug.cgi?id=1223051#c2
+
+Tested-by: tommy.gagnes@gmail.com
+Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
+Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/input/mouse/synaptics.c |    7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+--- a/drivers/input/mouse/synaptics.c
++++ b/drivers/input/mouse/synaptics.c
+@@ -138,6 +138,11 @@ static const struct min_max_quirk min_ma
+               1024, 5112, 2024, 4832
+       },
+       {
++              (const char * const []){"LEN2000", NULL},
++              {ANY_BOARD_ID, ANY_BOARD_ID},
++              1024, 5113, 2021, 4832
++      },
++      {
+               (const char * const []){"LEN2001", NULL},
+               1024, 5022, 2508, 4832
+       },
+@@ -173,7 +178,7 @@ static const char * const topbuttonpad_p
+       "LEN0047",
+       "LEN0048",
+       "LEN0049",
+-      "LEN2000",
++      "LEN2000", /* S540 */
+       "LEN2001", /* Edge E431 */
+       "LEN2002", /* Edge E531 */
+       "LEN2003",
index 1dcfdf56d5319ad3c97bdee0656fbf5f481f0f24..57f57fa33594ed7a5b98612ee2e135f896900acd 100644 (file)
@@ -21,3 +21,9 @@ n_tty-fix-auditing-support-for-cannonical-mode.patch
 alsa-hda-realtek-add-a-fixup-for-another-acer-aspire-9420.patch
 alsa-usb-audio-add-mic-volume-fix-quirk-for-logitech-quickcam-fusion.patch
 alsa-usb-audio-add-maya44-usb-mixer-control-names.patch
+input-synaptics-add-min-max-quirk-for-lenovo-s540.patch
+input-elantech-fix-detection-of-touchpads-where-the-revision-matches-a-known-rate.patch
+block-fix-ext_dev_lock-lockdep-report.patch
+usb-cp210x-add-id-for-hubz-dual-zigbee-and-z-wave-dongle.patch
+usb-serial-ftdi_sio-add-support-for-a-motion-tracker-development-board.patch
+x86-asm-irq-stop-relying-on-magic-jmp-behavior-for-early_idt_handlers.patch
diff --git a/queue-3.14/usb-cp210x-add-id-for-hubz-dual-zigbee-and-z-wave-dongle.patch b/queue-3.14/usb-cp210x-add-id-for-hubz-dual-zigbee-and-z-wave-dongle.patch
new file mode 100644 (file)
index 0000000..d1ed728
--- /dev/null
@@ -0,0 +1,30 @@
+From df72d588c54dad57dabb3cc8a87475d8ed66d806 Mon Sep 17 00:00:00 2001
+From: "John D. Blair" <johnb@candicontrols.com>
+Date: Thu, 4 Jun 2015 13:18:19 -0700
+Subject: USB: cp210x: add ID for HubZ dual ZigBee and Z-Wave dongle
+
+From: "John D. Blair" <johnb@candicontrols.com>
+
+commit df72d588c54dad57dabb3cc8a87475d8ed66d806 upstream.
+
+Added the USB serial device ID for the HubZ dual ZigBee
+and Z-Wave radio dongle.
+
+Signed-off-by: John D. Blair <johnb@candicontrols.com>
+Signed-off-by: Johan Hovold <johan@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/usb/serial/cp210x.c |    1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -128,6 +128,7 @@ static const struct usb_device_id id_tab
+       { USB_DEVICE(0x10C4, 0x8946) }, /* Ketra N1 Wireless Interface */
+       { USB_DEVICE(0x10C4, 0x8977) }, /* CEL MeshWorks DevKit Device */
+       { USB_DEVICE(0x10C4, 0x8998) }, /* KCF Technologies PRN */
++      { USB_DEVICE(0x10C4, 0x8A2A) }, /* HubZ dual ZigBee and Z-Wave dongle */
+       { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
+       { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
+       { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */
diff --git a/queue-3.14/usb-serial-ftdi_sio-add-support-for-a-motion-tracker-development-board.patch b/queue-3.14/usb-serial-ftdi_sio-add-support-for-a-motion-tracker-development-board.patch
new file mode 100644 (file)
index 0000000..9f4b47e
--- /dev/null
@@ -0,0 +1,41 @@
+From 1df5b888f54070a373a73b34488cc78c2365b7b4 Mon Sep 17 00:00:00 2001
+From: Patrick Riphagen <patrick.riphagen@xsens.com>
+Date: Tue, 19 May 2015 10:03:01 +0200
+Subject: USB: serial: ftdi_sio: Add support for a Motion Tracker Development Board
+
+From: Patrick Riphagen <patrick.riphagen@xsens.com>
+
+commit 1df5b888f54070a373a73b34488cc78c2365b7b4 upstream.
+
+This adds support for new Xsens device, Motion Tracker Development Board,
+using Xsens' own Vendor ID
+
+Signed-off-by: Patrick Riphagen <patrick.riphagen@xsens.com>
+Signed-off-by: Johan Hovold <johan@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/usb/serial/ftdi_sio.c     |    1 +
+ drivers/usb/serial/ftdi_sio_ids.h |    1 +
+ 2 files changed, 2 insertions(+)
+
+--- a/drivers/usb/serial/ftdi_sio.c
++++ b/drivers/usb/serial/ftdi_sio.c
+@@ -712,6 +712,7 @@ static const struct usb_device_id id_tab
+       { USB_DEVICE(XSENS_VID, XSENS_AWINDA_DONGLE_PID) },
+       { USB_DEVICE(XSENS_VID, XSENS_AWINDA_STATION_PID) },
+       { USB_DEVICE(XSENS_VID, XSENS_CONVERTER_PID) },
++      { USB_DEVICE(XSENS_VID, XSENS_MTDEVBOARD_PID) },
+       { USB_DEVICE(XSENS_VID, XSENS_MTW_PID) },
+       { USB_DEVICE(FTDI_VID, FTDI_OMNI1509) },
+       { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
+--- a/drivers/usb/serial/ftdi_sio_ids.h
++++ b/drivers/usb/serial/ftdi_sio_ids.h
+@@ -155,6 +155,7 @@
+ #define XSENS_AWINDA_STATION_PID 0x0101
+ #define XSENS_AWINDA_DONGLE_PID 0x0102
+ #define XSENS_MTW_PID         0x0200  /* Xsens MTw */
++#define XSENS_MTDEVBOARD_PID  0x0300  /* Motion Tracker Development Board */
+ #define XSENS_CONVERTER_PID   0xD00D  /* Xsens USB-serial converter */
+ /* Xsens devices using FTDI VID */
diff --git a/queue-3.14/x86-asm-irq-stop-relying-on-magic-jmp-behavior-for-early_idt_handlers.patch b/queue-3.14/x86-asm-irq-stop-relying-on-magic-jmp-behavior-for-early_idt_handlers.patch
new file mode 100644 (file)
index 0000000..bffcef9
--- /dev/null
@@ -0,0 +1,251 @@
+From 425be5679fd292a3c36cb1fe423086708a99f11a Mon Sep 17 00:00:00 2001
+From: Andy Lutomirski <luto@kernel.org>
+Date: Fri, 22 May 2015 16:15:47 -0700
+Subject: x86/asm/irq: Stop relying on magic JMP behavior for early_idt_handlers
+
+From: Andy Lutomirski <luto@kernel.org>
+
+commit 425be5679fd292a3c36cb1fe423086708a99f11a upstream.
+
+The early_idt_handlers asm code generates an array of entry
+points spaced nine bytes apart.  It's not really clear from that
+code or from the places that reference it what's going on, and
+the code only works in the first place because GAS never
+generates two-byte JMP instructions when jumping to global
+labels.
+
+Clean up the code to generate the correct array stride (member size)
+explicitly. This should be considerably more robust against
+screw-ups, as GAS will warn if a .fill directive has a negative
+count.  Using '. =' to advance would have been even more robust
+(it would generate an actual error if it tried to move
+backwards), but it would pad with nulls, confusing anyone who
+tries to disassemble the code.  The new scheme should be much
+clearer to future readers.
+
+While we're at it, improve the comments and rename the array and
+common code.
+
+Binutils may start relaxing jumps to non-weak labels.  If so,
+this change will fix our build, and we may need to backport this
+change.
+
+Before, on x86_64:
+
+  0000000000000000 <early_idt_handlers>:
+     0:   6a 00                   pushq  $0x0
+     2:   6a 00                   pushq  $0x0
+     4:   e9 00 00 00 00          jmpq   9 <early_idt_handlers+0x9>
+                          5: R_X86_64_PC32        early_idt_handler-0x4
+  ...
+    48:   66 90                   xchg   %ax,%ax
+    4a:   6a 08                   pushq  $0x8
+    4c:   e9 00 00 00 00          jmpq   51 <early_idt_handlers+0x51>
+                          4d: R_X86_64_PC32       early_idt_handler-0x4
+  ...
+   117:   6a 00                   pushq  $0x0
+   119:   6a 1f                   pushq  $0x1f
+   11b:   e9 00 00 00 00          jmpq   120 <early_idt_handler>
+                          11c: R_X86_64_PC32      early_idt_handler-0x4
+
+After:
+
+  0000000000000000 <early_idt_handler_array>:
+     0:   6a 00                   pushq  $0x0
+     2:   6a 00                   pushq  $0x0
+     4:   e9 14 01 00 00          jmpq   11d <early_idt_handler_common>
+  ...
+    48:   6a 08                   pushq  $0x8
+    4a:   e9 d1 00 00 00          jmpq   120 <early_idt_handler_common>
+    4f:   cc                      int3
+    50:   cc                      int3
+  ...
+   117:   6a 00                   pushq  $0x0
+   119:   6a 1f                   pushq  $0x1f
+   11b:   eb 03                   jmp    120 <early_idt_handler_common>
+   11d:   cc                      int3
+   11e:   cc                      int3
+   11f:   cc                      int3
+
+Signed-off-by: Andy Lutomirski <luto@kernel.org>
+Acked-by: H. Peter Anvin <hpa@linux.intel.com>
+Cc: Binutils <binutils@sourceware.org>
+Cc: Borislav Petkov <bp@alien8.de>
+Cc: H.J. Lu <hjl.tools@gmail.com>
+Cc: Jan Beulich <JBeulich@suse.com>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Link: http://lkml.kernel.org/r/ac027962af343b0c599cbfcf50b945ad2ef3d7a8.1432336324.git.luto@kernel.org
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ arch/x86/include/asm/segment.h |   15 +++++++++++++--
+ arch/x86/kernel/head64.c       |    2 +-
+ arch/x86/kernel/head_32.S      |   33 ++++++++++++++++++---------------
+ arch/x86/kernel/head_64.S      |   20 +++++++++++---------
+ 4 files changed, 43 insertions(+), 27 deletions(-)
+
+--- a/arch/x86/include/asm/segment.h
++++ b/arch/x86/include/asm/segment.h
+@@ -212,10 +212,21 @@
+ #define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
+ #ifdef __KERNEL__
++
++/*
++ * early_idt_handler_array is an array of entry points referenced in the
++ * early IDT.  For simplicity, it's a real array with one entry point
++ * every nine bytes.  That leaves room for an optional 'push $0' if the
++ * vector has no error code (two bytes), a 'push $vector_number' (two
++ * bytes), and a jump to the common entry code (up to five bytes).
++ */
++#define EARLY_IDT_HANDLER_SIZE 9
++
+ #ifndef __ASSEMBLY__
+-extern const char early_idt_handlers[NUM_EXCEPTION_VECTORS][2+2+5];
++
++extern const char early_idt_handler_array[NUM_EXCEPTION_VECTORS][EARLY_IDT_HANDLER_SIZE];
+ #ifdef CONFIG_TRACING
+-#define trace_early_idt_handlers early_idt_handlers
++# define trace_early_idt_handler_array early_idt_handler_array
+ #endif
+ /*
+--- a/arch/x86/kernel/head64.c
++++ b/arch/x86/kernel/head64.c
+@@ -162,7 +162,7 @@ asmlinkage void __init x86_64_start_kern
+       clear_bss();
+       for (i = 0; i < NUM_EXCEPTION_VECTORS; i++)
+-              set_intr_gate(i, early_idt_handlers[i]);
++              set_intr_gate(i, early_idt_handler_array[i]);
+       load_idt((const struct desc_ptr *)&idt_descr);
+       copy_bootdata(__va(real_mode_data));
+--- a/arch/x86/kernel/head_32.S
++++ b/arch/x86/kernel/head_32.S
+@@ -477,21 +477,22 @@ is486:
+ __INIT
+ setup_once:
+       /*
+-       * Set up a idt with 256 entries pointing to ignore_int,
+-       * interrupt gates. It doesn't actually load idt - that needs
+-       * to be done on each CPU. Interrupts are enabled elsewhere,
+-       * when we can be relatively sure everything is ok.
++       * Set up a idt with 256 interrupt gates that push zero if there
++       * is no error code and then jump to early_idt_handler_common.
++       * It doesn't actually load the idt - that needs to be done on
++       * each CPU. Interrupts are enabled elsewhere, when we can be
++       * relatively sure everything is ok.
+        */
+       movl $idt_table,%edi
+-      movl $early_idt_handlers,%eax
++      movl $early_idt_handler_array,%eax
+       movl $NUM_EXCEPTION_VECTORS,%ecx
+ 1:
+       movl %eax,(%edi)
+       movl %eax,4(%edi)
+       /* interrupt gate, dpl=0, present */
+       movl $(0x8E000000 + __KERNEL_CS),2(%edi)
+-      addl $9,%eax
++      addl $EARLY_IDT_HANDLER_SIZE,%eax
+       addl $8,%edi
+       loop 1b
+@@ -523,26 +524,28 @@ setup_once:
+       andl $0,setup_once_ref  /* Once is enough, thanks */
+       ret
+-ENTRY(early_idt_handlers)
++ENTRY(early_idt_handler_array)
+       # 36(%esp) %eflags
+       # 32(%esp) %cs
+       # 28(%esp) %eip
+       # 24(%rsp) error code
+       i = 0
+       .rept NUM_EXCEPTION_VECTORS
+-      .if (EXCEPTION_ERRCODE_MASK >> i) & 1
+-      ASM_NOP2
+-      .else
++      .ifeq (EXCEPTION_ERRCODE_MASK >> i) & 1
+       pushl $0                # Dummy error code, to make stack frame uniform
+       .endif
+       pushl $i                # 20(%esp) Vector number
+-      jmp early_idt_handler
++      jmp early_idt_handler_common
+       i = i + 1
++      .fill early_idt_handler_array + i*EARLY_IDT_HANDLER_SIZE - ., 1, 0xcc
+       .endr
+-ENDPROC(early_idt_handlers)
++ENDPROC(early_idt_handler_array)
+       
+-      /* This is global to keep gas from relaxing the jumps */
+-ENTRY(early_idt_handler)
++early_idt_handler_common:
++      /*
++       * The stack is the hardware frame, an error code or zero, and the
++       * vector number.
++       */
+       cld
+       cmpl $2,(%esp)          # X86_TRAP_NMI
+@@ -602,7 +605,7 @@ ex_entry:
+ is_nmi:
+       addl $8,%esp            /* drop vector number and error code */
+       iret
+-ENDPROC(early_idt_handler)
++ENDPROC(early_idt_handler_common)
+ /* This is the default interrupt "handler" :-) */
+       ALIGN
+--- a/arch/x86/kernel/head_64.S
++++ b/arch/x86/kernel/head_64.S
+@@ -321,26 +321,28 @@ bad_address:
+       jmp bad_address
+       __INIT
+-      .globl early_idt_handlers
+-early_idt_handlers:
++ENTRY(early_idt_handler_array)
+       # 104(%rsp) %rflags
+       #  96(%rsp) %cs
+       #  88(%rsp) %rip
+       #  80(%rsp) error code
+       i = 0
+       .rept NUM_EXCEPTION_VECTORS
+-      .if (EXCEPTION_ERRCODE_MASK >> i) & 1
+-      ASM_NOP2
+-      .else
++      .ifeq (EXCEPTION_ERRCODE_MASK >> i) & 1
+       pushq $0                # Dummy error code, to make stack frame uniform
+       .endif
+       pushq $i                # 72(%rsp) Vector number
+-      jmp early_idt_handler
++      jmp early_idt_handler_common
+       i = i + 1
++      .fill early_idt_handler_array + i*EARLY_IDT_HANDLER_SIZE - ., 1, 0xcc
+       .endr
++ENDPROC(early_idt_handler_array)
+-/* This is global to keep gas from relaxing the jumps */
+-ENTRY(early_idt_handler)
++early_idt_handler_common:
++      /*
++       * The stack is the hardware frame, an error code or zero, and the
++       * vector number.
++       */
+       cld
+       cmpl $2,(%rsp)          # X86_TRAP_NMI
+@@ -412,7 +414,7 @@ ENTRY(early_idt_handler)
+ is_nmi:
+       addq $16,%rsp           # drop vector number and error code
+       INTERRUPT_RETURN
+-ENDPROC(early_idt_handler)
++ENDPROC(early_idt_handler_common)
+       __INITDATA