Joerg Roedel [Tue, 2 Dec 2008 16:46:25 +0000 (17:46 +0100)]
AMD IOMMU: add protection domain flags
Imapct: add a new struct member to 'struct protection_domain'
When using protection domains for dma_ops and KVM its better to know for
which subsystem it was allocated. Add a flags member to struct
protection domain for that purpose.
Joerg Roedel [Wed, 10 Dec 2008 19:05:52 +0000 (20:05 +0100)]
AMD IOMMU: don't remove protection domain from iommu_pd_list
Impact: save unneeded logic to add and remove domains to the list
The removal of a protection domain from the iommu_pd_list is not
necessary. Another benefit is that we save complexity because we don't
have to readd it later when the device no longer uses the domain.
Joerg Roedel [Wed, 26 Nov 2008 16:21:24 +0000 (17:21 +0100)]
add frontend implementation for the IOMMU API
This API can be used by KVM for accessing different types of IOMMUs to
do device passthrough to guests. Beside that this API can also be used
by device drivers to map non-linear host memory into dma-linear
addresses to prevent sgather-gather DMA. UIO may be another user for
this API.
Joerg Roedel [Wed, 26 Nov 2008 16:02:33 +0000 (17:02 +0100)]
introcude linux/iommu.h for an iommu api
This patch introduces the API to abstract the exported VT-d functions
for KVM into a generic API. This way the AMD IOMMU implementation can
plug into this API later.
Weidong Han [Mon, 8 Dec 2008 15:00:00 +0000 (23:00 +0800)]
Add domain_flush_cache
Because virtual machine domain may have multiple devices from different iommus, it cannot use __iommu_flush_cache.
In some common low level functions, use domain_flush_cache instead of __iommu_flush_cache. On the other hand, in some functions, iommu can is specified or domain cannot be got, still use __iommu_flush_cache
Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Weidong Han [Mon, 8 Dec 2008 14:51:37 +0000 (22:51 +0800)]
Add/remove domain device info for virtual machine domain
Add iommu reference count in domain, and add a lock to protect iommu setting including iommu_bmp, iommu_count and iommu_coherency.
virtual machine domain may have multiple devices from different iommus, so it needs to do more things when add/remove domain device info. Thus implement separate these functions for virtual machine domain.
Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Weidong Han [Mon, 8 Dec 2008 07:49:06 +0000 (15:49 +0800)]
iommu coherency
In dmar_domain, more than one iommus may be included in iommu_bmp. Due to "Coherency" capability may be different across iommus, set this variable to indicate iommu access is coherent or not. Only when all related iommus in a dmar_domain are all coherent, iommu access of this domain is coherent.
Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Weidong Han [Mon, 8 Dec 2008 07:34:06 +0000 (15:34 +0800)]
calculate agaw for each iommu
"SAGAW" capability may be different across iommus. Use a default agaw, but if default agaw is not supported in some iommus, choose a less supported agaw.
Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Udo Steinberg [Fri, 2 Jan 2009 20:34:28 +0000 (17:34 -0300)]
V4L/DVB (10173): Missing v4l2_prio_close in radio_release
The radio_release function of the BTTV driver is missing a call to
v4l2_prio_close. As a result, after the radio device has been opened at
least once (e.g., by HAL during bootup), v4l2_priority will never drop below
V4L2_PRIORITY_INTERACTIVE again. With the following patch against 2.6.28,
applications that run with V4L2_PRIORITY_BACKGROUND are able to open devices
again. Previous Linux versions are affected as well.
Yu Zhao [Mon, 22 Dec 2008 08:54:58 +0000 (16:54 +0800)]
VT-d: fix segment number being ignored when searching DRHD
On platforms with multiple PCI segments, any of the segments can have a DRHD
with INCLUDE_PCI_ALL flag. So need to check the DRHD's segment number against
the PCI device's when searching its DRHD.
Mark McLoughlin [Thu, 20 Nov 2008 14:04:20 +0000 (14:04 +0000)]
intel-iommu: remove some unused struct intel_iommu fields
The seg, saved_msg and sysdev fields appear to be unused since
before the code was first merged.
linux/msi.h is not needed in linux/intel-iommu.h anymore since
there is no longer a reference to struct msi_msg. The MSI code
in drivers/pci/intel-iommu.c still has linux/msi.h included
via linux/dmar.h.
linux/sysdev.h isn't needed because there is no reference to
struct sys_device.
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Linus Torvalds [Fri, 2 Jan 2009 23:57:47 +0000 (15:57 -0800)]
Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
* 'linux-next' of git://git.infradead.org/ubifs-2.6: (33 commits)
UBIFS: add more useful debugging prints
UBIFS: print debugging messages properly
UBIFS: fix numerous spelling mistakes
UBIFS: allow mounting when short of space
UBIFS: fix writing uncompressed files
UBIFS: fix checkpatch.pl warnings
UBIFS: fix sparse warnings
UBIFS: simplify make_free_space
UBIFS: do not lie about used blocks
UBIFS: restore budg_uncommitted_idx
UBIFS: always commit on unmount
UBIFS: use ubi_sync
UBIFS: always commit in sync_fs
UBIFS: fix file-system synchronization
UBIFS: fix constants initialization
UBIFS: avoid unnecessary calculations
UBIFS: re-calculate min_idx_size after the commit
UBIFS: use nicer 64-bit math
UBIFS: fix available blocks count
UBIFS: various comment improvements and fixes
...
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next:
kbuild: ignore a few files in headers_check
kbuild: add checks for include of linux/types in userspace headers
kbuild: drop debugging leftover in tags.sh
kbuild: document environment variables
kbuild: make *config usage docs
kbuild: disable sparse warning "returning void-valued expression"
kbuild: in headers_install autoconvert asm/inline/volatile to __xxx__
kbuild: check for leaked CONFIG_ symbols to userspace
headers_check.pl: disallow extern's
kconfig: improve error messages for bad source statements
kconfig: struct property commented
kconfig: add comments to symbol flags
kconfig: explain symbol value defaults
m68k: fix recursive dependency in Kconfig
Linus Torvalds [Fri, 2 Jan 2009 23:33:12 +0000 (15:33 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)
x86: mpparse.c fix style problems
x86: nmi.c fix style problems
x86: ldt.c fix style problems
x86: cpuid.c fix style problems
x86, UV: remove erroneous BAU initialization
x86: fix incorrect __read_mostly on _boot_cpu_pda
x86: convert permanent_kmaps_init() from macro to inline
x86: early_printk - use sizeof instead of hardcoded number
x86: xsave.c: restore_user_xstate should be static
x86: uv_bau.h: fix dubious bitfield
x86: apic.c: xapic_icr_read and x2apic_icr_read should be static
x86: bios_uv.c: uv_systab should be static
x86: genx2apic_phys.c: x2apic_send_IPI_self and init_x2apic_ldr should be static
x86: amd_iommu.c: prealloc_protection_domains should be static
x86: amd_iommu_init.c: iommu_enable and iommu_enable_event_logging should be static
x86, pci: move arch/x86/pci/pci.h to arch/x86/include/asm/pci_x86.h
x86_64: pci-gart_64.c iommu_fullflush should be static
x86: efi.c declare add_efi_memmap before they get used
x86: io_apic.c io_apic_sync should be static
x86: apic.c declare pic_mode before they get used
...
Ingo Molnar [Fri, 2 Jan 2009 17:53:14 +0000 (18:53 +0100)]
Disallow gcc versions 3.{0,1}
GCC 3.0 and 3.1 are too old to build a working kernel.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
[ This check got dropped as obsolete when I simplified the gcc header
inclusion mess in f153b82121b0366fe0e5f9553545cce237335175, but Willy
Tarreau reports actually having those old versions still.. -Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 2 Jan 2009 19:44:09 +0000 (11:44 -0800)]
Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)
x86: export vector_used_by_percpu_irq
x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and()
sched: nominate preferred wakeup cpu, fix
x86: fix lguest used_vectors breakage, -v2
x86: fix warning in arch/x86/kernel/io_apic.c
sched: fix warning in kernel/sched.c
sched: move test_sd_parent() to an SMP section of sched.h
sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0
sched: activate active load balancing in new idle cpus
sched: bias task wakeups to preferred semi-idle packages
sched: nominate preferred wakeup cpu
sched: favour lower logical cpu number for sched_mc balance
sched: framework for sched_mc/smt_power_savings=N
sched: convert BALANCE_FOR_xx_POWER to inline functions
x86: use possible_cpus=NUM to extend the possible cpus allowed
x86: fix cpu_mask_to_apicid_and to include cpu_online_mask
x86: update io_apic.c to the new cpumask code
x86: Introduce topology_core_cpumask()/topology_thread_cpumask()
x86: xen: use smp_call_function_many()
x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c
...
Fixed up trivial conflict in kernel/time/tick-sched.c manually
The sparse warning -Wreturn-void ("returning void-valued expression")
is off by default, but it is enabled with -Wall, so add
-Wno-return-void to CHECKFLAGS to disable it.
Signed-off-by: Hannes Eder <hannes@hanneseder.net> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Mike Frysinger [Sat, 27 Dec 2008 08:23:15 +0000 (03:23 -0500)]
kbuild: in headers_install autoconvert asm/inline/volatile to __xxx__
Headers in userspace should be using the __xxx__ form of the asm, inline,
and volatile keywords. Since people like to revert these things without
realizing what's going on, have the headers install step autoconvert these
keywords.
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
projects / ~andy / linux / log