Commit Graph

190128 Commits

Author SHA1 Message Date
Alexander Graf
e425a6de1a KVM: PPC: Fix typo in book3s_32 debug code
There's a typo in the debug ifdef of the book3s_32 mmu emulation. While trying
to debug something I stumbled across that and wanted to save anyone after me
(or myself later) from having to debug that again.

So let's fix the ifdef.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:35:03 +03:00
Alexander Graf
d1bab74c51 KVM: PPC: Preload FPU when possible
There are some situations when we're pretty sure the guest will use the
FPU soon. So we can save the churn of going into the guest, finding out
it does want to use the FPU and going out again.

This patch adds preloading of the FPU when it's reasonable.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:59 +03:00
Alexander Graf
c8c0b6f2f7 KVM: PPC: Combine extension interrupt handlers
When we for example get an Altivec interrupt, but our guest doesn't support
altivec, we need to inject a program interrupt, not an altivec interrupt.

The same goes for paired singles. When an altivec interrupt arrives, we're
pretty sure we need to emulate the instruction because it's a paired single
operation.

So let's make all the ext handlers aware that they need to jump to the
program interrupt handler when an extension interrupt arrives that
was not supposed to arrive for the guest CPU.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:56 +03:00
Alexander Graf
d6d549b207 KVM: PPC: Add Gekko SPRs
The Gekko has some SPR values that differ from other PPC core values and
also some additional ones.

Let's add support for them in our mfspr/mtspr emulator.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:53 +03:00
Alexander Graf
3c402a75ea KVM: PPC: Add hidden flag for paired singles
The Gekko implements an extension called paired singles. When the guest wants
to use that extension, we need to make sure we're not running the host FPU,
because all FPU instructions need to get emulated to accomodate for additional
operations that occur.

This patch adds an hflag to track if we're in paired single mode or not.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:50 +03:00
Alexander Graf
37f5bca64e KVM: PPC: Add AGAIN type for emulation return
Emulation of an instruction can have different outcomes. It can succeed,
fail, require MMIO, do funky BookE stuff - or it can just realize something's
odd and will be fixed the next time around.

Exactly that is what EMULATE_AGAIN means. Using that flag we can now tell
the caller that nothing happened, but we still want to go back to the
guest and see what happens next time we come around.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:47 +03:00
Alexander Graf
3587d5348c KVM: PPC: Teach MMIO Signedness
The guest I was trying to get to run uses the LHA and LHAU instructions.
Those instructions basically do a load, but also sign extend the result.

Since we need to fill our registers by hand when doing MMIO, we also need
to sign extend manually.

This patch implements sign extended MMIO and the LHA(U) instructions.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:44 +03:00
Alexander Graf
b104d06632 KVM: PPC: Enable MMIO to do 64 bits, fprs and qprs
Right now MMIO access can only happen for GPRs and is at most 32 bit wide.
That's actually enough for almost all types of hardware out there.

Unfortunately, the guest I was using used FPU writes to MMIO regions, so
it ended up writing 64 bit MMIOs using FPRs and QPRs.

So let's add code to handle those odd cases too.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:41 +03:00
Alexander Graf
c62e096dec KVM: PPC: Make fpscr 64-bit
Modern PowerPCs have a 64 bit wide FPSCR register. Let's accomodate for that
and make it 64 bits in our vcpu struct too.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:38 +03:00
Alexander Graf
5aa9e2f43a KVM: PPC: Add QPR registers
The Gekko has GPRs, SPRs and FPRs like normal PowerPC codes, but
it also has QPRs which are basically single precision only FPU registers
that get used when in paired single mode.

The following patches depend on them being around, so let's add the
definitions early.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:35 +03:00
Joerg Roedel
052ce6211c KVM: SVM: Remove newlines from nested trace points
The tracing infrastructure adds its own newlines. Remove
them from the trace point printk format strings.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:31 +03:00
Joerg Roedel
66a562f7e2 KVM: SVM: Make lazy FPU switching work with nested svm
The new lazy fpu switching code may disable cr0 intercepts
when running nested. This is a bug because the nested
hypervisor may still want to intercept cr0 which will break
in this situation. This patch fixes this issue and makes
lazy fpu switching working with nested svm.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:28 +03:00
Joerg Roedel
06fc777269 KVM: SVM: Activate nested state only when guest state is complete
Certain functions called during the emulated world switch
behave differently when the vcpu is running nested. This is
not the expected behavior during a world switch emulation.
This patch ensures that the nested state is activated only
if the vcpu is completly in nested state.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:25 +03:00
Joerg Roedel
88ab24adc7 KVM: SVM: Don't sync nested cr8 to lapic and back
This patch makes syncing of the guest tpr to the lapic
conditional on !nested. Otherwise a nested guest using the
TPR could freeze the guest.
Another important change this patch introduces is that the
cr8 intercept bits are no longer ORed at vmrun emulation if
the guest sets VINTR_MASKING in its VMCB. The reason is that
nested cr8 accesses need alway be handled by the nested
hypervisor because they change the shadow version of the
tpr.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:22 +03:00
Joerg Roedel
4c7da8cb43 KVM: SVM: Fix nested msr intercept handling
The nested_svm_exit_handled_msr() function maps only one
page of the guests msr permission bitmap. This patch changes
the code to use kvm_read_guest to fix the bug.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:19 +03:00
Joerg Roedel
6c3bd3d766 KVM: SVM: Annotate nested_svm_map with might_sleep()
The nested_svm_map() function can sleep and must not be
called from atomic context. So annotate that function.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:16 +03:00
Joerg Roedel
cdbbdc1210 KVM: SVM: Sync all control registers on nested vmexit
Currently the vmexit emulation does not sync control
registers were the access is typically intercepted by the
nested hypervisor. But we can not count on that intercepts
to sync these registers too and make the code
architecturally more correct.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:13 +03:00
Joerg Roedel
b8e88bc8ff KVM: SVM: Fix schedule-while-atomic on nested exception handling
Move the actual vmexit routine out of code that runs with
irqs and preemption disabled.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:10 +03:00
Joerg Roedel
7597f129d8 KVM: SVM: Don't use kmap_atomic in nested_svm_map
Use of kmap_atomic disables preemption but if we run in
shadow-shadow mode the vmrun emulation executes kvm_set_cr3
which might sleep or fault. So use kmap instead for
nested_svm_map.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:07 +03:00
Takuya Yoshikawa
ad91f8ffbb KVM: remove redundant prototype of load_pdptrs()
This patch removes redundant prototype of load_pdptrs().

I found load_pdptrs() twice in kvm_host.h. Let's remove one.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:27:53 +03:00
Takuya Yoshikawa
0e4176a15f KVM: x86 emulator: Fix x86_emulate_insn() not to use the variable rc for non-X86EMUL values
This patch makes non-X86EMUL_* family functions not to use
the variable rc.

Be sure that this changes nothing but makes the purpose of
the variable rc clearer.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:27:50 +03:00
Takuya Yoshikawa
1b30eaa846 KVM: x86 emulator: X86EMUL macro replacements: x86_emulate_insn() and its helpers
This patch just replaces integer values used inside
x86_emulate_insn() and its helper functions to X86EMUL_*.

The purpose of this is to make it clear what will happen
when the variable rc is compared to X86EMUL_* at the end
of x86_emulate_insn().

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:27:46 +03:00
Takuya Yoshikawa
3e2815e9fa KVM: x86 emulator: X86EMUL macro replacements: from do_fetch_insn_byte() to x86_decode_insn()
This patch just replaces the integer values used inside x86's
decode functions to X86EMUL_*.

By this patch, it becomes clearer that we are using X86EMUL_*
value propagated from ops->read_std() in do_fetch_insn_byte().

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:27:43 +03:00
Gleb Natapov
1161624f15 KVM: inject #UD in 64bit mode from instruction that are not valid there
Some instruction are obsolete in a long mode. Inject #UD.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:27:40 +03:00
Gleb Natapov
89a27f4d0e KVM: use desc_ptr struct instead of kvm private descriptor_table
x86 arch defines desc_ptr for idt/gdt pointers, no need to define
another structure in kvm code.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:27:28 +03:00
Marcelo Tosatti
679613442f KVM: add doc note about PIO/MMIO completion API
Document that partially emulated instructions leave the guest state
inconsistent, and that the kernel will complete operations before
checking for pending signals.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:26:32 +03:00
Linus Torvalds
1ef6ce7a34 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: allow 4 coldfire serial ports
  m68knommu: fix coldfire tcdrain
  m68knommu: remove a duplicate vector setting line for 68360
  Fix m68k-uclinux's rt_sigreturn trampoline
  m68knommu: correct the CC flags for Coldfire M5272 targets
  uclinux: error message when FLAT reloc symbol is invalid, v2
2010-04-21 12:33:12 -07:00
Linus Torvalds
458f8c895b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  mc13783-regulator: fix a memory leak in mc13783_regulator_remove
  regulator: Let drivers know when they use the stub API
2010-04-21 12:31:52 -07:00
Linus Torvalds
255f41c595 Merge git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs
* git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs:
  [LogFS] Split large truncated into smaller chunks
  [LogFS] Set s_bdi
  [LogFS] Prevent mempool_destroy NULL pointer dereference
  [LogFS] Move assertion
  [LogFS] Plug 8 byte information leak
  [LogFS] Prevent memory corruption on large deletes
  [LogFS] Remove unused method

Fix trivial conflict with added header includes in fs/logfs/super.c
2010-04-21 12:31:12 -07:00
Linus Torvalds
9befb55ef5 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6:
  jfs: add jfs specific ->setattr call
  jfs: fix diAllocExt error in resizing filesystem
  jfs_dmap.[ch]: trivial typo fix: s/heigth/height/g
2010-04-21 12:30:07 -07:00
Linus Torvalds
a486b0af79 Merge branch 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm
* 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: Fix TSS size check for 16-bit tasks
  KVM: Add missing srcu_read_lock() for kvm_mmu_notifier_release()
  KVM: Increase NR_IOBUS_DEVS limit to 200
  KVM: fix the handling of dirty bitmaps to avoid overflows
  KVM: MMU: fix kvm_mmu_zap_page() and its calling path
  KVM: VMX: Save/restore rflags.vm correctly in real mode
  KVM: allow bit 10 to be cleared in MSR_IA32_MC4_CTL
  KVM: Don't spam kernel log when injecting exceptions due to bad cr writes
  KVM: SVM: Fix memory leaks that happen when svm_create_vcpu() fails
  KVM: take srcu lock before call to complete_pio()
2010-04-21 12:29:46 -07:00
Linus Torvalds
1519ae4dc7 Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md:
  md/raid5: allow for more than 2^31 chunks.
2010-04-21 12:28:44 -07:00
David Howells
083fd8b21a AFS: Don't pass error value to page_cache_release() in error handling
In the error handling in afs_mntpt_do_automount(), we pass an error
pointer to page_cache_release() if read_mapping_page() failed.  Instead,
we should extend the gotos around the error handling we don't need.

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-04-21 12:27:43 -07:00
Jan Kiszka
e8861cfe2c KVM: x86: Fix TSS size check for 16-bit tasks
A 16-bit TSS is only 44 bytes long. So make sure to test for the correct
size on task switch.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-21 13:51:42 +03:00
Lai Jiangshan
eda2beda83 KVM: Add missing srcu_read_lock() for kvm_mmu_notifier_release()
I got this dmesg due to srcu_read_lock() is missing in
kvm_mmu_notifier_release().

===================================================
[ INFO: suspicious rcu_dereference_check() usage. ]
---------------------------------------------------
arch/x86/kvm/x86.h:72 invoked rcu_dereference_check() without protection!

other info that might help us debug this:

rcu_scheduler_active = 1, debug_locks = 0
2 locks held by qemu-system-x86/3100:
 :  (rcu_read_lock){.+.+..}, at: [<ffffffff810d73dc>] __mmu_notifier_release+0x38/0xdf
 :  (&(&kvm->mmu_lock)->rlock){+.+...}, at: [<ffffffffa0130a6a>] kvm_mmu_zap_all+0x21/0x5e [kvm]

stack backtrace:
Pid: 3100, comm: qemu-system-x86 Not tainted 2.6.34-rc3-22949-gbc8a97a-dirty 
Call Trace:
 [<ffffffff8106afd9>] lockdep_rcu_dereference+0xaa/0xb3
 [<ffffffffa0123a89>] unalias_gfn+0x56/0xab [kvm]
 [<ffffffffa0119600>] gfn_to_memslot+0x16/0x25 [kvm]
 [<ffffffffa012ffca>] gfn_to_rmap+0x17/0x6e [kvm]
 [<ffffffffa01300c1>] rmap_remove+0xa0/0x19d [kvm]
 [<ffffffffa0130649>] kvm_mmu_zap_page+0x109/0x34d [kvm]
 [<ffffffffa0130a7e>] kvm_mmu_zap_all+0x35/0x5e [kvm]
 [<ffffffffa0122870>] kvm_arch_flush_shadow+0x16/0x22 [kvm]
 [<ffffffffa01189e0>] kvm_mmu_notifier_release+0x15/0x17 [kvm]
 [<ffffffff810d742c>] __mmu_notifier_release+0x88/0xdf
 [<ffffffff810d73dc>] ? __mmu_notifier_release+0x38/0xdf
 [<ffffffff81040848>] ? exit_mm+0xe0/0x115
 [<ffffffff810c2cb0>] exit_mmap+0x2c/0x17e
 [<ffffffff8103c472>] mmput+0x2d/0xd4
 [<ffffffff81040870>] exit_mm+0x108/0x115
[...]

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-21 11:17:43 +03:00
Philippe De Muyter
2545cf6e94 m68knommu: allow 4 coldfire serial ports
Fix driver/serial/mcf.c for 4-ports coldfire's (e.g. MCF5484).

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2010-04-21 14:56:00 +10:00
Philippe De Muyter
3732b68f22 m68knommu: fix coldfire tcdrain
Fix tcdrain on coldfire uarts.
Currently with coldfire uarts tcdrain returns without waiting for txempty,
because (tx)fifosize is 0.  Fix that and call uart_update_timeout when
setting the baud rate, otherwise tcdrain will wait for an half our :)
Also constify mcf_uart_ops.

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2010-04-21 13:43:06 +10:00
Greg Ungerer
6ecaf44e62 m68knommu: remove a duplicate vector setting line for 68360
Remove a duplicate vector setting line for the 68360 interrupt
setup. Pointed out by Roel Kluin <roel.kluin@gmail.com>

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2010-04-21 13:43:06 +10:00
Maxim Kuvyrkov
760d6e7861 Fix m68k-uclinux's rt_sigreturn trampoline
Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2010-04-21 13:43:05 +10:00
Philip Nye
eb79cbe230 m68knommu: correct the CC flags for Coldfire M5272 targets
Signed-off-by: Philip Nye <philipn@engarts.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2010-04-21 13:28:49 +10:00
Jun Sun
d7dfee3f5d uclinux: error message when FLAT reloc symbol is invalid, v2
This patch fixes a cosmetic error in printk. Text segment and data/bss
segment are allocated from two different areas. It is not meaningful to
give the diff between them in the error reporting messages.

Signed-off-by: Jun Sun <jsun@junsun.net>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2010-04-21 13:28:49 +10:00
Joern Engel
b6349ac89e [LogFS] Split large truncated into smaller chunks
Truncate would do an almost limitless amount of work without invoking
the garbage collector in between.  Split it up into more manageable,
though still large, chunks.

Signed-off-by: Joern Engel <joern@logfs.org>
2010-04-20 21:44:10 +02:00
Linus Torvalds
05ce7bfe54 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6:
  quota: Convert __DQUOT_PARANOIA symbol to standard config option
2010-04-20 09:39:40 -07:00
Jan Kara
62af9b5205 quota: Convert __DQUOT_PARANOIA symbol to standard config option
Make __DQUOT_PARANOIA define from the old days a standard config option
and turn it off by default.

This gets rid of a quota warning about writes before quota is turned on
for systems with ext4 root filesystem. Currently there's no way to legally
solve this because /etc/mtab has to be written before quota is turned on
on most systems.

Signed-off-by: Jan Kara <jack@suse.cz>
2010-04-20 18:25:25 +02:00
Linus Torvalds
27ee896370 Merge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
  pcmcia: fix error handling in cm4000_cs.c
  drivers/pcmcia: Add missing local_irq_restore
  serial_cs: MD55x support (PCMCIA GPRS/EDGE modem) (kernel 2.6.33)
  pcmcia: avoid late calls to pccard_validate_cis
  pcmcia: fix ioport size calculation in rsrc_nonstatic
  pcmcia: re-start on MFC override
  pcmcia: fix io_probe due to parent (PCI) resources
  pcmcia: use previously assigned IRQ for all card functions
2010-04-20 09:21:19 -07:00
Linus Torvalds
ac8bf56430 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Fix hardirq tracing in trap return path.
  sparc64: Use correct pt_regs in decode_access_size() error paths.
  sparc64: Fix PREEMPT_ACTIVE value.
  sparc64: Run NMIs on the hardirq stack.
  sparc64: Allocate sufficient stack space in ftrace stubs.
  sparc: Fix forgotten kmemleak headers inclusion
2010-04-20 09:20:55 -07:00
Linus Torvalds
34388d1c4f Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf: Fix unsafe frame rewinding with hot regs fetching
2010-04-20 09:20:23 -07:00
Linus Torvalds
186837ca3a Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm: delay vblank cleanup until after driver unload
2010-04-20 09:20:11 -07:00
Christoph Hellwig
4cecd935f6 x86: correctly wire up the newuname system call
Before commit e28cbf2293 ("improve
sys_newuname() for compat architectures") 64-bit x86 had a private
implementation of sys_uname which was just called sys_uname, which other
architectures used for the old uname.

Due to some merge issues with the uname refactoring patches we ended up
calling the old uname version for both the old and new system call
slots, which lead to the domainname filed never be set which caused
failures with libnss_nis.

Reported-and-tested-by: Andy Isaacson <adi@hexapodia.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-04-20 09:17:21 -07:00
Sridhar Samudrala
e80e2a60ff KVM: Increase NR_IOBUS_DEVS limit to 200
This patch increases the current hardcoded limit of NR_IOBUS_DEVS
from 6 to 200. We are hitting this limit when creating a guest with more
than 1 virtio-net device using vhost-net backend. Each virtio-net
device requires 2 such devices to service notifications from rx/tx queues.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-20 13:08:30 +03:00