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  1. 16 11月, 2006 11 次提交
  3. 15 11月, 2006 18 次提交
  5. 14 11月, 2006 11 次提交
    • A
      [PATCH] x86-64: Fix race in exit_idle · 9446868b
      由 Andi Kleen 提交于 
      When another interrupt happens in exit_idle the exit idle notifier
could be called an incorrect number of times.

Add a test_and_clear_bit_pda and use it handle the bit
atomically against interrupts to avoid this.

Pointed out by Stephane Eranian
Signed-off-by: NAndi Kleen <ak@suse.de>
      9446868b
    • A
      [PATCH] x86-64: Fix vgetcpu when CONFIG_HOTPLUG_CPU is disabled · 8c131af1
      由 Andi Kleen 提交于 
      The vgetcpu per CPU initialization previously relied on CPU hotplug
events for all CPUs to initialize the per CPU state. That only
worked only on kernels with CONFIG_HOTPLUG_CPU enabled.  On the
others some CPUs didn't get their state initialized properly
and vgetcpu wouldn't work.

Change the initialization sequence to instead run in a normal
initcall (which runs after the normal CPU bootup) and initialize
all running CPUs there. Later hotplug CPUs are still handled
with an hotplug notifier.

This actually simplifies the code somewhat.
Signed-off-by: NAndi Kleen <ak@suse.de>
      8c131af1
    • A
      [PATCH] x86: Add acpi_user_timer_override option for Asus boards · fa18f477
      由 Andi Kleen 提交于 
      Timer overrides are normally disabled on Nvidia board because
they are commonly wrong, except on new ones with HPET support.
Unfortunately there are quite some Asus boards around that
don't have HPET, but need a timer override.

We don't know yet how to handle this transparently,
but at least add a command line option to force the timer override
and let them boot.

Cc: len.brown@intel.com
Signed-off-by: NAndi Kleen <ak@suse.de>
      fa18f477
    • M
      [PATCH] x86-64: setup saved_max_pfn correctly (kdump) · 15803a43
      由 Magnus Damm 提交于 
      x86_64: setup saved_max_pfn correctly

2.6.19-rc4 has broken CONFIG_CRASH_DUMP support on x86_64. It is impossible
to read out the kernel contents from /proc/vmcore because saved_max_pfn is set
to zero instead of the max_pfn value before the user map is setup.

This happens because saved_max_pfn is initialized at parse_early_param() time,
and at this time no active regions have been registered. save_max_pfn is setup
from e820_end_of_ram(), more exact find_max_pfn_with_active_regions() which
returns 0 because no regions exist.

This patch fixes this by registering before and removing after the call
to e820_end_of_ram().
Signed-off-by: NMagnus Damm <magnus@valinux.co.jp>
Signed-off-by: NAndi Kleen <ak@suse.de>
      15803a43
    • A
      [PATCH] x86-64: Handle reserve_bootmem_generic beyond end_pfn · 5e58a02a
      由 Andi Kleen 提交于 
      This can happen on kexec kernels with some configurations, in particularly
on Unisys ES7000 systems.

Analysis by Amul Shah

Cc: Amul Shah <amul.shah@unisys.com>
Signed-off-by: NAndi Kleen <ak@suse.de>
      5e58a02a
    • S
      [PATCH] x86-64: shorten the x86_64 boot setup GDT to what the comment says · 51d67a48
      由 Steven Rostedt 提交于 
      Stephen Tweedie, Herbert Xu, and myself have been struggling with a very
nasty bug in Xen.  But it also pointed out a small bug in the x86_64
kernel boot setup.

The GDT limit being setup by the initial bzImage code when entering into
protected mode is way too big.  The comment by the code states that the
size of the GDT is 2048, but the actual size being set up is much bigger
(32768). This happens simply because of one extra '0'.

Instead of setting up a 0x800 size, 0x8000 is set up.  On bare metal this
is fine because the CPU wont load any segments unless  they are
explicitly used.  But unfortunately, this breaks Xen on vmx FV, since it
(for now) blindly loads all the segments into the VMCS if they are less
than the gdt limit. Since the real mode segments are around 0x3000, we are
getting junk into the VMCS and that later causes an exception.

Stephen Tweedie has written up a patch to fix the Xen side and will be
submitting that to those folks. But that doesn't excuse the GDT limit
being a magnitude too big.

AK: changed to compute true gdt size in assembler, fixed comment
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: NAndi Kleen <ak@suse.de>
      51d67a48
    • A
      [PATCH] x86-64: Fix PTRACE_[SG]ET_THREAD_AREA regression with ia32 emulation. · 14679eb3
      由 Andi Kleen 提交于 
      ptrace(PTRACE_[SG]ET_THREAD_AREA) calls from ia32 code
should be passed onto the x86_64 implementation.

The default case in sys32_ptrace used to call to sys_ptrace(), but is
now EINVAL.  This patch fixes a regression caused by that changed.
Signed-off-by: NMike McCormack <mike@codeweavers.com>
Signed-off-by: NAndi Kleen <ak@suse.de>
      14679eb3
    • A
      [PATCH] x86-64: Fix partial page check to ensure unusable memory is not being marked usable. · 14f448e3
      由 Aaron Durbin 提交于 
      Fix partial page check in e820_register_active_regions to ensure
partial pages are
not being marked as active in the memory pool.
Signed-off-by: NAaron Durbin <adurbin@google.com>
Signed-off-by: NAndi Kleen <ak@suse.de>
      14f448e3
    • A
      Revert "[PATCH] MMCONFIG and new Intel motherboards" · 64e72e41
      由 Andi Kleen 提交于 
      This reverts 4c6e052a commit.

Following Linus' i386 change: revert resource reservation
for mmcfg config now. Will be revisited in .20 hopefully.
      64e72e41
    • D
      libata: fix double-completion on error · 253b92ec
      由 Darrick J. Wong 提交于 
      A curious thing happens, however, when ata_qc_new_init fails to get
an ata_queued_cmd:

First, ata_qc_new_init handles the failure like this:
    cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1);
    done(cmd);

Then, we return to ata_scsi_translate and do this:
    err_mem:
        cmd->result = (DID_ERROR << 16);
        done(cmd);

It appears to me that first we set a status code indicating that we're
ok but the device queue is full and finish the command,  but then
we blow away that status code and replace it with an error flag and
finish the command a second time!  That does not seem to be desirable
behavior since we merely want the I/O to wait until a command slot
frees up, not send errors up the block layer.

In the err_mem case, we should simply exit out of ata_scsi_translate
instead.
Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      253b92ec
    • A
      [PATCH] pata_artop: fix "& (1 >>" typo · 3f9dd27a
      由 Alexey Dobriyan 提交于 
      Signed-off-by: NAlexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      3f9dd27a