Commit Graph

312 Commits

Author SHA1 Message Date
Warner Losh
b7df74ee5a Make this compile with gcc.
Submitted by: royger@
2014-04-05 22:43:18 +00:00
Ryan Stone
6749935455 Re-implement the DMAR I/O MMU code in terms of PCI RIDs
Under the hood the VT-d spec is really implemented in terms of
PCI RIDs instead of bus/slot/function, even though the spec makes
pains to convert back to bus/slot/function in examples.  However
working with bus/slot/function is not correct when PCI ARI is
in use, so convert to using RIDs in most cases.  bus/slot/function
will only be used when reporting errors to a user.

Reviewed by:	kib
MFC after:	2 months
Sponsored by:	Sandvine Inc.
2014-04-01 15:48:46 +00:00
Ryan Stone
7036ae46bf Revert PCI RID changes.
My PCI RID changes somehow got intermixed with my PCI ARI patch when I
committed it.  I may have accidentally applied a patch to a non-clean
working tree.  Revert everything while I figure out what went wrong.

Pointy hat to: rstone
2014-04-01 15:06:03 +00:00
Ryan Stone
b5eb8abe3e Re-implement the DMAR I/O MMU code in terms of PCI RIDs
Under the hood the VT-d spec is really implemented in terms of
PCI RIDs instead of bus/slot/function, even though the spec makes
pains to convert back to bus/slot/function in examples.  However
working with bus/slot/function is not correct when PCI ARI is
in use, so convert to using RIDs in most cases.  bus/slot/function
will only be used when reporting errors to a user.

Reviewed by:	kib
Sponsored by:	Sandvine Inc.
2014-04-01 14:51:45 +00:00
Tijl Coosemans
0a4c54d606 Rename __wchar_t so it no longer conflicts with __wchar_t from clang 3.4
-fms-extensions.

MFC after:	2 weeks
2014-04-01 14:46:11 +00:00
Takanori Watanabe
95c52f142d Change default logic to CONFORM because this routine is shared
with SCI polarity setting.

Reviewed by: jhb
2014-03-28 02:38:14 +00:00
Takanori Watanabe
337877ca21 Strict value checking will cause problem.
Bay trail DN2820FYKH is supported on Linux but does not work on FreeBSD.
This behaviour is bug-compatible with Linux-3.13.5.

References:
http://d.hatena.ne.jp/syuu1228/20140326
http://lxr.linux.no/linux+v3.13.5/arch/x86/kernel/acpi/boot.c#L1094

Submitted by: syuu
2014-03-27 06:36:38 +00:00
Takanori Watanabe
7dcf10fe67 To check polarity, check ACPI_MADT_POLARITY_CONFORMS, instead of ACPI_MADT_TRIGGER_CONFORMS.
PR:amd64/188010
Submitted by: syuu
2014-03-27 06:08:07 +00:00
John Baldwin
6b7797339b Fix build without SMP.
PR:		kern/187854
MFC after:	1 week
2014-03-26 17:40:13 +00:00
Warner Losh
f79309d29c Remove vestiges of knowing the ISA bus, which we gave up on around 20
years ago. Remove redunant copy of isaregs.h.
2014-03-19 21:03:04 +00:00
Konstantin Belousov
9d0bc6d88f Add support for the PCI(e)-PCI bridges to the Intel VT-d driver. The
bridge takes ownership of the transaction, so bsf of the requester is
the bridge and not a device behind it.  As result, code needs to walk
the hierarchy up to use correct context.

Note that PCIe->PCI-X bridges are not handled quite correctly since
such bridges are allowed to only take ownership of some transactions.
Also, weird but unrealistic cases of PCIe behind PCI bus are also not
handled.

Still, the patch provides significant step forward for the bridge
handling.

Submitted by:	Jason Harmening <jason.harmening@gmail.com>
MFC after:	1 week
2014-03-18 16:41:32 +00:00
Konstantin Belousov
e02b05b39e It is not uncommon for BIOSes to report wrong RMRR entries in DMAR
table.  Among them, some (old AMI ?) BIOSes report entries with range
like (bf7ec000, bf7ebfff).  Attempts to ignore the bogus entries
result in faults, so the range must be covered somehow.

Provide a workaround by identity mapping the 32 pages after the bogus
entry start, which seems to be enough for the reported BIOS.

Reported and tested by:	Jason Harmening <jason.harmening@gmail.com>
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-03-18 16:20:33 +00:00
Konstantin Belousov
e8c5884213 Trim at EOL.
MFC after:	3 days
2014-03-18 15:59:06 +00:00
Ed Maste
0fcefb433d Update NetBSD Foundation copyrights to 2-clause BSD
The NetBSD Foundation states "Third parties are encouraged to change the
license on any files which have a 4-clause license contributed to the
NetBSD Foundation to a 2-clause license."

This change removes clauses 3 and 4 from copyright / license blocks that
list The NetBSD Foundation as the only copyright holder.

Sponsored by:	The FreeBSD Foundation
2014-03-18 01:40:25 +00:00
John Baldwin
053cbfe3bd Correct type for malloc().
Submitted by:	"Conrad Meyer" <conrad.meyer@isilon.com>
2014-03-13 18:11:42 +00:00
Roger Pau Monné
079f7ef839 xen: add a hook to perform AP startup
AP startup on PVH follows the PV method, so we need to add a hook in
order to diverge from bare metal.

Approved by: gibbs
Sponsored by: Citrix Systems R&D

amd64/amd64/machdep.c:
 - Add hook for start_all_aps on native (using native_start_all_aps
   defined in mp_machdep).

amd64/amd64/mp_machdep.c:
 - Make some variables global because they will also be used by the
   Xen PVH AP startup code.
 - Use the start_all_aps hook to start APs.
 - Rename start_all_aps to native_start_all_aps.

amd64/include/smp.h:
 - Add declaration for native_start_all_aps.

x86/include/init.h:
 - Declare start_all_aps hook in init_ops.

x86/xen/pv.c:
 - Pick external declarations from mp_machdep.
 - Introduce Xen PV code to start APs on PVH.
 - Set start_all_aps init hook to use the Xen PVH implementation.
2014-03-11 10:27:57 +00:00
Roger Pau Monné
2afbc44b38 xen: changes to hvm code in order to support PVH guests
On PVH we don't need to init the shared info page, or disable emulated
devices. Also, make sure PV IPIs are set before starting the APs.

Approved by: gibbs
Sponsored by: Citrix Systems R&D

x86/xen/hvm.c:
 - Return early from functions that are no-ops on Xen PVH guests.
 - In order to make sure PV IPIs are setup before AP startup,
   initialize them in SI_SUB_SMP-1.
2014-03-11 10:26:53 +00:00
Roger Pau Monné
5a036d7e02 xen: add hook for AP bootstrap memory reservation
This hook will only be implemented for bare metal, Xen doesn't require
any bootstrap code since APs are started in long mode with paging
enabled.

Approved by: gibbs
Sponsored by: Citrix Systems R&D

amd64/amd64/machdep.c:
 - Set mp_bootaddress hook for bare metal.

x86/include/init.h:
 - Define mp_bootaddress in init_ops.
2014-03-11 10:26:16 +00:00
Roger Pau Monné
3d80242f23 xen: add an apic_enumerator for PVH
On PVH there's no ACPI, so the CPU enumeration must be implemented
using Xen hypercalls.

Approved by: gibbs
Sponsored by: Citrix Systems R&D

x86/xen/pvcpu_enum.c:
 - Enumerate avaiable vCPUs on PVH by using the VCPUOP_is_up
   hypercall.
 - Set vcpu_id for PVH guests.

conf/files.amd64:
 - Include the PV CPU enumerator in the XENHVM build.
2014-03-11 10:25:08 +00:00
Roger Pau Monné
4d30a3fb95 xen: use the same hypercall mechanism for XEN and XENHVM
Currently XEN (PV) and XENHVM (PVHVM) ports use different ways to
issue hypercalls, unify this by filling the hypercall_page under HVM
also.

Approved by: gibbs
Sponsored by: Citrix Systems R&D

amd64/include/xen/hypercall.h:
 - Unify Xen hypercall code by always using the PV way.

i386/i386/locore.s:
 - Define hypercall_page on i386 XENHVM.

x86/xen/hvm.c:
 - Fill hypercall_page on XENHVM kernels using the HVM method (only
   when running as an HVM guest).
2014-03-11 10:24:13 +00:00
Roger Pau Monné
1e69553ed1 xen: implement hook to fetch and parse e820 memory map
e820 memory map is fetched using a hypercall under Xen PVH, so add a
hook to init_ops in oder to diverge from bare metal and implement a
Xen variant.

Approved by: gibbs
Sponsored by: Citrix Systems R&D

x86/include/init.h:
 - Add a parse_memmap hook to init_ops, that will be called to fetch
   and parse the memory map.

amd64/amd64/machdep.c:
 - Decouple the fetch and the parse of the memmap, so the parse
   function can be shared with Xen code.
 - Move code around in order to implement the parse_memmap hook.

amd64/include/pc/bios.h:
 - Declare bios_add_smap_entries (implemented in machdep.c).

x86/xen/pv.c:
 - Implement fetching of e820 memmap when running as a PVH guest by
   using the XENMEM_memory_map hypercall.
2014-03-11 10:23:03 +00:00
Roger Pau Monné
5f05c79450 xen: implement an early timer for Xen PVH
When running as a PVH guest, there's no emulated i8254, so we need to
use the Xen PV timer as the early source for DELAY. This change allows
for different implementations of the early DELAY function and
implements a Xen variant for it.

Approved by: gibbs
Sponsored by: Citrix Systems R&D

dev/xen/timer/timer.c:
dev/xen/timer/timer.h:
 - Implement Xen early delay functions using the PV timer and declare
   them.

x86/include/init.h:
 - Add hooks for early clock source initialization and early delay
   functions.

i386/i386/machdep.c:
pc98/pc98/machdep.c:
amd64/amd64/machdep.c:
 - Set early delay hooks to use the i8254 on bare metal.
 - Use clock_init (that will in turn make use of init_ops) to
   initialize the early clock source.

amd64/include/clock.h:
i386/include/clock.h:
 - Declare i8254_delay and clock_init.

i386/xen/clock.c:
 - Rename DELAY to i8254_delay.

x86/isa/clock.c:
 - Introduce clock_init that will take care of initializing the early
   clock by making use of the init_ops hooks.
 - Move non ISA related delay functions to the newly introduced delay
   file.

x86/x86/delay.c:
 - Add moved delay related functions.
 - Implement generic DELAY function that will use the init_ops hooks.

x86/xen/pv.c:
 - Set PVH hooks for the early delay related functions in init_ops.

conf/files.amd64:
conf/files.i386:
conf/files.pc98:
 - Add delay.c to the kernel build.
2014-03-11 10:20:42 +00:00
Roger Pau Monné
97baeefd5b amd64: introduce hook for custom preload metadata parsers
Add hooks to amd64 in order to have diverging implementations, since
on Xen PV the metadata is passed to the kernel in a different form.

Approbed by: gibbs
Sponsored by: Citrix Systems R&D

amd64/amd64/machdep.c:
 - Define init_ops for native.
 - Put native code inside of native_parse_preload_data hook.
 - Call the parse_preload_data in order to fill the metadata info.

x86/include/init.h:
 - Declare the init_ops struct.

x86/xen/pv.c:
 - Declare xen_init_ops that contains the Xen PV implementation of
   init_ops.
 - Implement the parse_preload_data for Xen PVH, the info is fetched
   from HYPERVISOR_start_info->cmd_line as provided by Xen.
2014-03-11 10:15:25 +00:00
Roger Pau Monné
aa389b4f8c howto_names: unify declaration
Approved by: gibbs
Sponsored by: Citrix Systems R&D

boot/i386/efi/bootinfo.c:
boot/i386/libi386/bootinfo.c:
boot/ia64/common/bootinfo.c:
boot/powerpc/ofw/metadata.c:
boot/powerpc/ps3/metadata.c:
boot/sparc64/loader/metadata.c:
boot/uboot/common/metadata.c:
boot/userboot/userboot/bootinfo.c:
i386/xen/xen_machdep.c:
 - Include sys/boot.h
 - Remove custom definition of howto_names.

sys/boot.h:
 - Define howto_names.

x86/xen/pv.c:
 - Include sys/boot.h
2014-03-11 10:13:06 +00:00
Roger Pau Monné
c203fa6940 xen: add and enable Xen console for PVH guests
This adds and enables the PV console used on XEN kernels to
GENERIC/XENHVM kernels in order for it to be used on PVH.

Approved by: gibbs
Sponsored by: Citrix Systems R&D

dev/xen/console/console.c:
 - Define console_page.
 - Move xc_printf debug function from i386 XEN code to generic console
   code.
 - Rework xc_printf.
 - Use xen_initial_domain instead of open-coded checks for Dom0.
 - Gate the attach of the PV console to PV(H) guests.

dev/xen/console/xencons_ring.c:
 - Allow the PV Xen console to output earlier by directly signaling
   the event channel in start_info if the event channel is not yet
   initialized.
 - Use HYPERVISOR_start_info instead of xen_start_info.

i386/include/xen/xen-os.h:
 - Remove prototype for xc_printf since it's now declared in global
   xen-os.h

i386/xen/xen_machdep.c:
 - Remove previous version of xc_printf.
 - Remove definition of console_page (now it's defined in the console
   itself).
 - Fix some printf formatting errors.

x86/xen/pv.c:
 - Add some early boot debug messages using xc_printf.
 - Set console_page based on the value passed in start_info.

xen/xen-os.h:
 - Declare console_page and add prototype for xc_printf.
2014-03-11 10:09:23 +00:00
Roger Pau Monné
1a9cdd373a xen: add PV/PVH kernel entry point
Add the PV/PVH entry point and the low level functions for PVH
early initialization.

Approved by: gibbs
Sponsored by: Citrix Systems R&D

amd64/amd64/genassym.c:
 - Add __FreeBSD_version define to assym.s so it can be used for the
   Xen notes.

amd64/amd64/locore.S:
 - Make bootstack global so it can be used from Xen kernel entry
   point.

amd64/amd64/xen-locore.S:
 - Add Xen notes to the kernel.
 - Add the Xen PV entry point, that is going to call hammer_time_xen.

amd64/include/asmacros.h:
 - Add ELFNOTE macros.

i386/xen/xen_machdep.c:
 - Define HYPERVISOR_start_info for the XEN i386 PV port, which is
   going to be used in some shared code between PV and PVH.

x86/xen/hvm.c:
 - Define HYPERVISOR_start_info for the PVH port.

x86/xen/pv.c:
 - Introduce hammer_time_xen which is going to perform early setup for
   Xen PVH:
    - Setup shared Xen variables start_info, shared_info and
      xen_store.
    - Set guest type.
    - Create initial page tables as FreeBSD expects to find them.
    - Call into native init function (hammer_time).

xen/xen-os.h:
 - Declare HYPERVISOR_start_info.

conf/files.amd64:
 - Add amd64/amd64/locore.S and x86/xen/pv.c to the list of files.
2014-03-11 10:07:01 +00:00
Roger Pau Monné
e8da1c4877 amd64/i386: switch IPI handlers to C code.
Move asm IPIs handlers to C code, so both Xen and native IPI handlers
share the same code.

Reviewed by: jhb
Approved by: gibbs
Sponsored by: Citrix Systems R&D

amd64/amd64/apic_vector.S:
i386/i386/apic_vector.s:
 - Remove asm coded IPI handlers and instead call the newly introduced
   C variants.

amd64/amd64/mp_machdep.c:
i386/i386/mp_machdep.c:
 - Add C coded clones to the asm IPI handlers (moved from
   x86/xen/hvm.c).

i386/include/smp.h:
amd64/include/smp.h:
 - Add prototypes for the C IPI handlers.

x86/xen/hvm.c:
 - Move the C IPI handlers to mp_machdep and call those in the Xen IPI
   handlers.

i386/xen/mp_machdep.c:
 - Add dummy IPI handlers to the i386 Xen PV port (this port doesn't
   support SMP).
2014-03-11 10:03:29 +00:00
Jung-uk Kim
1d22d877b8 Move fpusave() wrapper for suspend hander to sys/amd64/amd64/fpu.c.
Inspired by:	jhb
2014-03-04 21:35:57 +00:00
John Baldwin
4edef187b8 Add support for managing PCI bus numbers. As with BARs and PCI-PCI bridge
I/O windows, the default is to preserve the firmware-assigned resources.
PCI bus numbers are only managed if NEW_PCIB is enabled and the architecture
defines a PCI_RES_BUS resource type.
- Add a helper API to create top-level PCI bus resource managers for each
  PCI domain/segment.  Host-PCI bridge drivers use this API to allocate
  bus numbers from their associated domain.
- Change the PCI bus and CardBus drivers to allocate a bus resource for
  their bus number from the parent PCI bridge device.
- Change the PCI-PCI and PCI-CardBus bridge drivers to allocate the
  full range of bus numbers from secbus to subbus from their parent bridge.
  The drivers also always program their primary bus register.  The bridge
  drivers also support growing their bus range by extending the bus resource
  and updating subbus to match the larger range.
- Add support for managing PCI bus resources to the Host-PCI bridge drivers
  used for amd64 and i386 (acpi_pcib, mptable_pcib, legacy_pcib, and qpi_pcib).
- Define a PCI_RES_BUS resource type for amd64 and i386.

Reviewed by:	imp
MFC after:	1 month
2014-02-12 04:30:37 +00:00
John Baldwin
e432d5f6a7 Drop the 3rd clause from all 3 clause BSD licenses where I am the sole
holder to convert them to 2 clause BSD licenses.

MFC after:	1 week
2014-02-05 18:13:27 +00:00
John Baldwin
5c039412a2 Move a warning about LINT pins configured with a level trigger under
bootverbose.
2014-02-05 18:11:46 +00:00
Tijl Coosemans
b35ac06804 Rename the AMD MSR_PERFCTR[0-3] so the Pentium Pro MSR_PERFCTR[0-1]
aren't redefined.

Reported by:	"Trivedi, Nishank" <Nishank.Trivedi@netapp.com>
Discussed with:	kib
2014-01-31 14:29:34 +00:00
John Baldwin
e07ef9b0f6 Move <machine/apicvar.h> to <x86/apicvar.h>. 2014-01-23 20:10:22 +00:00
John Baldwin
84ca9aad53 - Reuse legacy_pcib_(read|write)_config() methods in the QPI pcib driver.
- Reuse legacy_pcib_alloc_msi{,x}() methods in the QPI and mptable pcib
  drivers.
2014-01-21 03:14:19 +00:00
John Baldwin
2f0df38779 - Only check the ivars for direct descendants.
- A couple of whitespace fixes.
2014-01-20 17:55:22 +00:00
John Baldwin
6d40361585 The changes in r233781 attempted to make logging during a machine check
exception more readable.  In practice they prevented all logging during
a machine check exception on at least some systems.  Specifically, when
an uncorrected ECC error is detected in a DIMM on a Nehalem/Westmere
class machine, all CPUs receive a machine check exception, but only
CPUs on the same package as the memory controller for the erroring DIMM
log an error.  The CPUs on the other package would complete the scan of
their machine check banks and panic before the first set of CPUs could
log an error.  The end result was a clearer display during the panic
(no interleaved messages), but a crashdump without any useful info about
the error that occurred.

To handle this case, make all CPUs spin in the machine check handler
once they have completed their scan of their machine check banks until
at least one machine check error is logged.  I tried using a DELAY()
instead so that the CPUs would not potentially hang forever, but that
was not reliable in testing.

While here, don't clear MCIP from MSR_MCG_STATUS before invoking panic.
Only clear it if the machine check handler does not panic and returns
to the interrupted thread.
2014-01-08 21:04:12 +00:00
Nathan Whitehorn
dcd08302e5 Retire machine/fdt.h as a header used by MI code, as its function is now
obsolete. This involves the following pieces:
- Remove it entirely on PowerPC, where it is not used by MD code either
- Remove all references to machine/fdt.h in non-architecture-specific code
  (aside from uart_cpu_fdt.c, shared by ARM and MIPS, and so is somewhat
  non-arch-specific).
- Fix code relying on header pollution from machine/fdt.h includes
- Legacy fdtbus.c (still used on x86 FDT systems) now passes resource
  requests to its parent (nexus). This allows x86 FDT devices to allocate
  both memory and IO requests and removes the last notionally MI use of
  fdtbus_bs_tag.
- On those architectures that retain a machine/fdt.h, unused bits like
  FDT_MAP_IRQ and FDT_INTR_MAX have been removed.
2014-01-05 18:46:58 +00:00
John Baldwin
4c9518f884 Fix i386 build.
Pointy hat to:	jhb
2013-12-24 14:48:52 +00:00
John Baldwin
63e62d390d Add a resume hook for bhyve that runs a function on all CPUs during
resume.  For Intel CPUs, invoke vmxon for CPUs that were in VMX mode
at the time of suspend.

Reviewed by:	neel
2013-12-23 19:48:22 +00:00
John Baldwin
b2b76a45bf Use fixed-width types for all fields in MP Table structures and pack
all the structures.  While here, move a helper struct only used in
the kernel parser out of this header since it is not part of the MP
specification itself.
2013-12-11 21:19:04 +00:00
Alexander Motin
9d75ca28f0 Do not DELAY() for P-state transition unless we want to see the result.
Intel manual says: "If a transition is already in progress, transition to
a new value will subsequently take effect. Reads of IA32_PERF_CTL determine
the last targeted operating point."  So seems it should be fine to just
trigger wanted transition and go.  Linux does the same.

MFC after:	1 month
2013-12-10 20:25:43 +00:00
John Baldwin
316032ad20 Move constants for indices in the local APIC's local vector table from
apicvar.h to apicreg.h.
2013-12-09 21:08:52 +00:00
John Baldwin
c71f0d951a Fix the processor table entry structure to use a fixed-width type for
32-bit fields so it is the correct size on amd64.  Remove a workaround
for the broken structure from bhyve(8).

MFC after:	1 week
2013-12-05 21:51:54 +00:00
Eitan Adler
7a22215c53 Fix undefined behavior: (1 << 31) is not defined as 1 is an int and this
shifts into the sign bit.  Instead use (1U << 31) which gets the
expected result.

This fix is not ideal as it assumes a 32 bit int, but does fix the issue
for most cases.

A similar change was made in OpenBSD.

Discussed with:	-arch, rdivacky
Reviewed by:	cperciva
2013-11-30 22:17:27 +00:00
Attilio Rao
54366c0bd7 - For kernel compiled only with KDTRACE_HOOKS and not any lock debugging
option, unbreak the lock tracing release semantic by embedding
  calls to LOCKSTAT_PROFILE_RELEASE_LOCK() direclty in the inlined
  version of the releasing functions for mutex, rwlock and sxlock.
  Failing to do so skips the lockstat_probe_func invokation for
  unlocking.
- As part of the LOCKSTAT support is inlined in mutex operation, for
  kernel compiled without lock debugging options, potentially every
  consumer must be compiled including opt_kdtrace.h.
  Fix this by moving KDTRACE_HOOKS into opt_global.h and remove the
  dependency by opt_kdtrace.h for all files, as now only KDTRACE_FRAMES
  is linked there and it is only used as a compile-time stub [0].

[0] immediately shows some new bug as DTRACE-derived support for debug
in sfxge is broken and it was never really tested.  As it was not
including correctly opt_kdtrace.h before it was never enabled so it
was kept broken for a while.  Fix this by using a protection stub,
leaving sfxge driver authors the responsibility for fixing it
appropriately [1].

Sponsored by:	EMC / Isilon storage division
Discussed with:	rstone
[0] Reported by:	rstone
[1] Discussed with:	philip
2013-11-25 07:38:45 +00:00
Ed Maste
3d271aaab0 x86: Allow users to change PSL_RF via ptrace(PT_SETREGS...)
Debuggers may need to change PSL_RF.  Note that tf_eflags is already stored
in the signal context during signal handling and PSL_RF previously could be
modified via sigreturn, so this change should not provide any new ability
to userspace.

For background see the thread at:
http://lists.freebsd.org/pipermail/freebsd-i386/2007-September/005910.html

Reviewed by:	jhb, kib
Sponsored by:	DARPA, AFRL
2013-11-14 15:37:20 +00:00
Dimitry Andric
f7f5706f28 Fix gcc warning about an uninitialized bool in sys/x86/iommu/intel_drv.c.
Reviewed by:	kib
2013-11-09 22:05:29 +00:00
Dimitry Andric
d291234c33 Fix gcc warning about an empty device_printf() format string in
sys/x86/iommu/intel_fault.c.

Reviewed by:	kib
2013-11-09 22:00:44 +00:00
Dimitry Andric
d4e70c8074 Fix (erroneous) gcc warnings about usage of uninitialized variables in
sys/x86/iommu/intel_idpgtbl.c.

Reviewed by:	kib
2013-11-09 20:36:52 +00:00
Dimitry Andric
335521936f Fix gcc warnings about casting away const in sys/x86/iommu/intel_drv.c.
Reviewed by:	kib
2013-11-09 20:09:02 +00:00