venkatesh.pallipadi@intel.com
3c8bb73ace
x86: PAT: store vm_pgoff for all linear_over_vma_region mappings - v3 ...
Impact: Code transformation, new functions added should have no effect.
Drivers use mmap followed by pgprot_* and remap_pfn_range or vm_insert_pfn,
in order to export reserved memory to userspace. Currently, such mappings are
not tracked and hence not kept consistent with other mappings (/dev/mem,
pci resource, ioremap) for the sme memory, that may exist in the system.
The following patchset adds x86 PAT attribute tracking and untracking for
pfnmap related APIs.
First three patches in the patchset are changing the generic mm code to fit
in this tracking. Last four patches are x86 specific to make things work
with x86 PAT code. The patchset aso introduces pgprot_writecombine interface,
which gives writecombine mapping when enabled, falling back to
pgprot_noncached otherwise.
This patch:
While working on x86 PAT, we faced some hurdles with trackking
remap_pfn_range() regions, as we do not have any information to say
whether that PFNMAP mapping is linear for the entire vma range or
it is smaller granularity regions within the vma.
A simple solution to this is to use vm_pgoff as an indicator for
linear mapping over the vma region. Currently, remap_pfn_range
only sets vm_pgoff for COW mappings. Below patch changes the
logic and sets the vm_pgoff irrespective of COW. This will still not
be enough for the case where pfn is zero (vma region mapped to
physical address zero). But, for all the other cases, we can look at
pfnmap VMAs and say whether the mappng is for the entire vma region
or not.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18 13:30:15 -08:00
byteorder: provide swabb.h generically in asm/byteorder.h
2008-10-20 08:52:40 -07:00
can: Fix CAN_(EFF|RTR)_FLAG handling in can_filter
2008-12-03 15:52:35 -08:00
V4L/DVB (9196): Add support for DSS delivery
2008-10-17 17:15:43 -03:00
mfd: twl4030 IRQ handling update
2008-10-22 01:19:37 +02:00
rtc: rtc-wm8350: add support for WM8350 RTC
2008-11-12 17:17:18 -08:00
mlx4_core: Save/restore default port IB capability mask
2008-11-28 21:29:46 -08:00
mmc: struct device - replace bus_id with dev_name(), dev_set_name()
2008-11-08 21:37:46 +01:00
[MTD] [NOR] Fix cfi_send_gen_cmd handling of x16 devices in x8 mode (v4)
2008-11-05 14:40:25 +01:00
netfilter: xtables: add missing const qualifier to xt_tgchk_param
2008-11-24 16:06:17 -08:00
md: use sysfs_notify_dirent to notify changes to md/dev-xxx/state
2008-10-21 13:25:28 +11:00
spi: fix compile error
2008-10-30 11:38:47 -07:00
ssb: Fix DMA-API compilation for non-PCI systems
2008-11-10 13:50:19 -08:00
USB: fix comment about endianness of descriptors
2008-12-17 10:49:14 -08:00
Merge branch 'video' into release
2008-11-11 21:15:50 -05:00
PCI: fix AER capability check
2008-10-20 11:01:52 -07:00
[PATCH] fix broken timestamps in AVC generated by kernel threads
2008-12-09 02:27:41 -05:00
vmscan: split LRU lists into anon & file sets
2008-10-20 08:50:25 -07:00
include/linux/bcd.h: remove comments
2008-10-20 08:52:42 -07:00
bio: define __BIOVEC_PHYS_MERGEABLE
2008-11-06 08:41:55 +01:00
Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb
2008-10-23 08:20:34 -07:00
Enforce a minimum SG_IO timeout
2008-12-05 14:49:18 -08:00
blktrace: add support for driver data
2008-10-17 08:46:57 +02:00
fs: buffer lock use lock bitops
2008-10-20 08:52:32 -07:00
Add c2 port support
2008-11-12 17:17:18 -08:00
[PATCH] switch cdrom_{open,release,ioctl} to sane APIs
2008-10-21 07:47:22 -04:00
cgroups: tiny cleanups
2008-10-30 11:38:45 -07:00
container freezer: implement freezer cgroup subsystem
2008-10-20 08:52:34 -07:00
clarify usage expectations for cnt32_to_63()
2008-11-09 11:17:33 -08:00
remove __ARCH_WANT_COMPAT_SYS_PTRACE
2008-11-30 11:00:15 -08:00
cpumask: introduce new API, without changing anything, v3
2008-11-09 21:09:54 +01:00
cpuset: update top cpuset's mems after adding a node
2008-11-19 18:49:58 -08:00
proc: move /proc/vmcore creation to fs/proc/vmcore.c
2008-10-23 18:51:22 +04:00
[PATCH vfs-2.6 2/6] vfs: add d_ancestor()
2008-10-23 05:13:16 -04:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev
2008-10-23 10:23:07 -07:00
i2c: Constify i2c_get_clientdata's parameter
2008-10-22 20:21:31 +02:00
dm raid1: separate region_hash interface part1
2008-10-21 17:45:06 +01:00
intel-iommu: IA64 support
2008-10-18 14:29:15 +01:00
ext3: add an option to control error handling on file data
2008-10-20 08:52:37 -07:00
fb: convert lock/unlock_kernel() into local fb mutex
2008-10-20 08:52:36 -07:00
[PATCH] introduce fmode_t, do annotations
2008-10-21 07:47:06 -04:00
freezer_cg: use thaw_process() in unfreeze_cgroup()
2008-10-30 11:38:45 -07:00
[PATCH 2/2] documnt FMODE_ constants
2008-12-04 04:22:58 -05:00
gianfar: Fix race in TBI/SerDes configuration
2008-10-31 00:59:46 -04:00
[PATCH] introduce fmode_t, do annotations
2008-10-21 07:47:06 -04:00
KSYM_SYMBOL_LEN fixes
2008-12-10 08:01:54 -08:00
block: make add_partition() return pointer to hd_struct
2008-11-18 15:08:56 +01:00
HID: fix oops during suspend of unbound HID devices
2008-10-27 15:06:01 +01:00
Allow architectures to override copy_user_highpage()
2008-11-27 23:39:48 +00:00
hrtimer: clean up unused callback modes
2008-11-12 09:54:40 +01:00
proc: switch /proc/meminfo to seq_file
2008-10-23 13:52:40 +04:00
i2c-algo-pcf: Add adapter hooks around xfer begin and end
2008-10-22 20:21:30 +02:00
V4L/DVB (9240): saa7127: Fix two typos
2008-10-17 17:25:11 -03:00
i2c: Add info->archdata field
2008-10-22 20:21:33 +02:00
i7300_idle: Disable ioat channel only on platforms where ile driver can load
2008-10-24 12:54:18 -04:00
amd74xx: workaround unreliable AltStatus register for nVidia controllers
2008-12-02 20:40:03 +01:00
lib/idr.c: fix rcu related race with idr_find
2008-12-01 19:55:25 -08:00
net: fix packet socket delivery in rx irq handler
2008-11-04 14:49:57 -08:00
adjust init section definitions
2008-10-29 22:02:09 +01:00
Fix inotify watch removal/umount races
2008-11-15 12:26:44 -08:00
HID: map macbook keys for "Expose" and "Dashboard"
2008-11-13 10:31:36 +01:00
intel-iommu: IA64 support
2008-10-18 14:29:15 +01:00
Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2008-10-20 13:23:01 -07:00
io mapping: clean up #ifdefs
2008-11-03 18:21:45 +01:00
irq.h: fix missing/extra kernel-doc
2008-11-23 10:52:45 +01:00
genirq: fix off by one and coding style
2008-10-21 15:54:40 +02:00
jbd: fix error handling for checkpoint io
2008-10-23 08:55:01 -07:00
ext4: Replace hackish ext4_mb_poll_new_transaction with commit callback
2008-10-16 20:00:24 -04:00
byteorder: add new headers for make headers-install
2008-10-20 08:52:40 -07:00
Add 'pr_fmt()' format modifier to pr_xyz macros.
2008-11-15 11:43:37 -08:00
Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2008-10-20 13:23:01 -07:00
KVM: Future-proof device assignment ABI
2008-10-28 14:22:15 +02:00
KVM: Fix guest shared interrupt with in-kernel irqchip
2008-10-28 14:21:34 +02:00
leds: Make default trigger fields const
2008-10-20 22:34:12 +01:00
libata: blacklist Seagate drives which time out FLUSH_CACHE when used with NCQ
2008-12-01 13:49:27 -05:00
lockdep: include/linux/lockdep.h - fix warning in net/bluetooth/af_bluetooth.c
2008-11-13 23:19:10 -08:00
memcg: allocate all page_cgroup at boot
2008-10-20 08:52:39 -07:00
hotplug_memory_notifier section annotation
2008-11-30 10:03:38 -08:00
vmscan: move isolate_lru_page() to vmscan.c
2008-10-20 08:50:25 -07:00
x86: PAT: store vm_pgoff for all linear_over_vma_region mappings - v3
2008-12-18 13:30:15 -08:00
vmscan: kill unused lru functions
2008-10-20 08:52:31 -07:00
memcg: allocate all page_cgroup at boot
2008-10-20 08:52:39 -07:00
memcg: allocate all page_cgroup at boot
2008-10-20 08:52:39 -07:00
HID: fix hid_device_id for cross compiling
2008-10-29 00:51:25 +01:00
param: Fix duplicate module prefixes
2008-10-22 10:00:23 +11:00
core_param() for genuinely core kernel parameters
2008-10-22 10:00:23 +11:00
fat: Cleanup FAT attribute stuff
2008-11-06 15:41:21 -08:00
[PATCH vfs-2.6 6/6] vfs: add LOOKUP_RENAME_TARGET intent
2008-10-23 05:13:20 -04:00
reintroduce accept4
2008-11-19 18:49:57 -08:00
netpoll: fix race on poll_list resulting in garbage entry
2008-12-09 23:22:26 -08:00
Make nfs_file_cred more robust.
2008-10-17 13:06:45 -04:00
powerpc/oprofile: Fix mutex locking for cell spu-oprofile
2008-10-21 15:17:48 +11:00
mlock: mlocked pages are unevictable
2008-10-20 08:52:30 -07:00
meminit section warnings
2008-11-30 10:03:35 -08:00
mm: page lock use lock bitops
2008-10-20 08:52:32 -07:00
Unevictable LRU Infrastructure
2008-10-20 08:50:26 -07:00
PCI: annotate return value of pci_ioremap_bar with __iomem
2008-11-03 14:31:18 -08:00
PCI: Hotplug core: remove 'name'
2008-10-22 16:42:43 -07:00
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
2008-10-23 10:20:36 -07:00
PCI: add support for function level reset
2008-10-22 16:42:35 -07:00
revert "percpu_counter: new function percpu_counter_sum_and_set"
2008-12-10 08:01:52 -08:00
Phonet: do not reply to indication reset packets
2008-10-26 23:07:25 -07:00
Merge branch 'linus' into test
2008-10-23 00:11:07 -04:00
proc: remove fs/proc/proc_misc.c
2008-10-23 18:54:05 +04:00
profiling: fix up CONFIG_PROC_FS=n build
2008-10-23 08:55:01 -07:00
make ptrace_untrace() static
2008-10-20 08:52:39 -07:00
remove ratelimt()
2008-11-12 17:17:17 -08:00
[PATCH] remember mode of reiserfs journal
2008-10-21 07:49:04 -04:00
mm: increase the default mlock limit from 32k to 64k
2008-10-30 11:38:45 -07:00
ring-buffer: buffer record on/off switch
2008-11-11 15:02:04 -05:00
make mm/rmap.c:anon_vma_cachep static
2008-10-20 08:52:40 -07:00
epoll: introduce resource usage limits
2008-12-01 19:55:24 -08:00
nfsd: fix vm overcommit crash fix #2
2008-12-02 15:50:40 -08:00
seq_file: add seq_cpumask_list(), seq_nodemask_list()
2008-10-20 08:52:39 -07:00
serial: sh-sci: fix cannot work SH7723 SCIFA
2008-11-12 12:29:56 +09:00
slab: document SLAB_DESTROY_BY_RCU
2008-11-13 20:49:02 +02:00
smc911x: Add IRQ polarity configuration
2008-10-22 07:00:38 -04:00
Define smp_call_function_many for UP
2008-12-15 16:28:57 -08:00
linux/string.h: fix comment typo
2008-11-02 10:15:07 -08:00
byteorder: use generic C version for value byteswapping
2008-10-20 08:52:40 -07:00
vmscan: unevictable LRU scan sysctl
2008-10-20 08:52:31 -07:00
reintroduce accept4
2008-11-19 18:49:57 -08:00
x86: sysfs: kill owner field from attribute
2008-10-20 08:52:42 -07:00
telephony: trivial: fix up email address
2008-11-11 09:30:23 -08:00
NOHZ: unify the nohz function calls in irq_enter()
2008-10-17 18:13:38 +02:00
Merge branch 'timers/range-hrtimers' into v28-range-hrtimers-for-linus-v2
2008-10-22 09:48:06 +02:00
Add round_jiffies_up and related routines
2008-11-06 08:42:48 +01:00
sched: fine-tune SD_SIBLING_INIT
2008-11-07 16:09:23 +01:00
[PATCH] introduce fmode_t, do annotations
2008-10-21 07:47:06 -04:00
USB: don't register endpoints for interfaces that are going away
2008-11-13 14:45:00 -08:00
V4L/DVB (9320): v4l2: Add 10-bit RAW Bayer formats
2008-10-21 14:31:15 -02:00
proc: move /proc/vmallocinfo to mm/vmalloc.c
2008-10-23 15:48:28 +04:00
proc: move /proc/zoneinfo boilerplate to mm/vmstat.c
2008-10-23 17:35:04 +04:00
cpumask: introduce new API, without changing anything
2008-11-06 09:05:33 +01:00
