12 Feb, 2015
1 commit
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Pull powerpc updates from Michael Ellerman:
- Update of all defconfigs
- Addition of a bunch of config options to modernise our defconfigs
- Some PS3 updates from Geoff
- Optimised memcmp for 64 bit from Anton
- Fix for kprobes that allows 'perf probe' to work from Naveen
- Several cxl updates from Ian & Ryan
- Expanded support for the '24x7' PMU from Cody & Sukadev
- Freescale updates from Scott:
"Highlights include 8xx optimizations, some more work on datapath
device tree content, e300 machine check support, t1040 corenet
error reporting, and various cleanups and fixes"* tag 'powerpc-3.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (102 commits)
cxl: Add missing return statement after handling AFU errror
cxl: Fail AFU initialisation if an invalid configuration record is found
cxl: Export optional AFU configuration record in sysfs
powerpc/mm: Warn on flushing tlb page in kernel context
powerpc/powernv: Add OPAL soft-poweroff routine
powerpc/perf/hv-24x7: Document sysfs event description entries
powerpc/perf/hv-gpci: add the remaining gpci requests
powerpc/perf/{hv-gpci, hv-common}: generate requests with counters annotated
powerpc/perf/hv-24x7: parse catalog and populate sysfs with events
perf: define EVENT_DEFINE_RANGE_FORMAT_LITE helper
perf: add PMU_EVENT_ATTR_STRING() helper
perf: provide sysfs_show for struct perf_pmu_events_attr
powerpc/kernel: Avoid initializing device-tree pointer twice
powerpc: Remove old compile time disabled syscall tracing code
powerpc/kernel: Make syscall_exit a local label
cxl: Fix device_node reference counting
powerpc/mm: bail out early when flushing TLB page
powerpc: defconfigs: add MTD_SPI_NOR (new dependency for M25P80)
perf/powerpc: reset event hw state when adding it to the PMU
powerpc/qe: Use strlcpy()
...
19 Jan, 2015
1 commit
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The commit 3b8a3c010969 ("powerpc/pseries: Fix endiannes issue in RTAS
call from xmon") was fixing an endianness issue in the call made from
xmon to RTAS.However, as Michael Ellerman noticed, this fix was not complete, the
token value was not byte swapped. This lead to call an unexpected and
most of the time unexisting RTAS function, which is silently ignored by
RTAS.This fix addresses this hole.
Reported-by: Michael Ellerman
Cc: stable@vger.kernel.org
Signed-off-by: Laurent Dufour
Signed-off-by: Michael Ellerman
29 Dec, 2014
1 commit
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isxdigit() macro definition is the same.
isalnum() from linux/ctype.h will accept additional latin non-ASCII
characters. This is harmless since this macro is used in scanhex() which
parses user input.isspace() from linux/ctype.h will accept vertical tab and form feed but
not NULL. The use of this macro is modified to accept NULL as
well. Additional characters are harmless since this macro is also only
used in scanhex().Signed-off-by: Vincent Bernat
Signed-off-by: Michael Ellerman
12 Dec, 2014
1 commit
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Pull powerpc updates from Michael Ellerman:
"Some nice cleanups like removing bootmem, and removal of
__get_cpu_var().There is one patch to mm/gup.c. This is the generic GUP
implementation, but is only used by us and arm(64). We have an ack
from Steve Capper, and although we didn't get an ack from Andrew he
told us to take the patch through the powerpc tree.There's one cxl patch. This is in drivers/misc, but Greg said he was
happy for us to manage fixes for it.There is an infrastructure patch to support an IPMI driver for OPAL.
There is also an RTC driver for OPAL. We weren't able to get any
response from the RTC maintainer, Alessandro Zummo, so in the end we
just merged the driver.The usual batch of Freescale updates from Scott"
* tag 'powerpc-3.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (101 commits)
powerpc/powernv: Return to cpu offline loop when finished in KVM guest
powerpc/book3s: Fix partial invalidation of TLBs in MCE code.
powerpc/mm: don't do tlbie for updatepp request with NO HPTE fault
powerpc/xmon: Cleanup the breakpoint flags
powerpc/xmon: Enable HW instruction breakpoint on POWER8
powerpc/mm/thp: Use tlbiel if possible
powerpc/mm/thp: Remove code duplication
powerpc/mm/hugetlb: Sanity check gigantic hugepage count
powerpc/oprofile: Disable pagefaults during user stack read
powerpc/mm: Check for matching hpte without taking hpte lock
powerpc: Drop useless warning in eeh_init()
powerpc/powernv: Cleanup unused MCE definitions/declarations.
powerpc/eeh: Dump PHB diag-data early
powerpc/eeh: Recover EEH error on ownership change for BCM5719
powerpc/eeh: Set EEH_PE_RESET on PE reset
powerpc/eeh: Refactor eeh_reset_pe()
powerpc: Remove more traces of bootmem
powerpc/pseries: Initialise nvram_pstore_info's buf_lock
cxl: Name interrupts in /proc/interrupt
cxl: Return error to PSL if IRQ demultiplexing fails & print clearer warning
...
02 Dec, 2014
2 commits
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Drop BP_IABR_TE, which though used, does not do anything useful. Rename
BP_IABR to BP_CIABR. Renumber the flags.Signed-off-by: Michael Ellerman
-
This patch enables support for hardware instruction breakpoint in xmon
on POWER8 platform with the help of a new register called the CIABR
(Completed Instruction Address Breakpoint Register). With this patch, a
single hardware instruction breakpoint can be added and cleared during
any active xmon debug session. The hardware based instruction breakpoint
mechanism works correctly with the existing TRAP based instruction
breakpoint available on xmon.There are no powerpc CPU with CPU_FTR_IABR feature any more. This patch
has re-purposed all the existing IABR related code to work with CIABR
register based HW instruction breakpoint.This has one odd feature, which is that when we hit a breakpoint xmon
doesn't tell us we have hit the breakpoint. This is because xmon is
expecting bp->address == regs->nip. Because CIABR fires on completition
regs->nip points to the instruction after the breakpoint. We could fix
that, but it would then confuse other parts of the xmon code which think
we need to emulate the instruction. [mpe]Signed-off-by: Michael Ellerman
Signed-off-by: Anshuman Khandual
27 Nov, 2014
1 commit
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On pseries system (LPAR) xmon failed to enter when running in LE mode,
system is hunging. Inititating xmon will lead to such an output on the
console:SysRq : Entering xmon
cpu 0x15: Vector: 0 at [c0000003f39ffb10]
pc: c00000000007ed7c: sysrq_handle_xmon+0x5c/0x70
lr: c00000000007ed7c: sysrq_handle_xmon+0x5c/0x70
sp: c0000003f39ffc70
msr: 8000000000009033
current = 0xc0000003fafa7180
paca = 0xc000000007d75e80 softe: 0 irq_happened: 0x01
pid = 14617, comm = bash
Bad kernel stack pointer fafb4b0 at eca7cc4
cpu 0x15: Vector: 300 (Data Access) at [c000000007f07d40]
pc: 000000000eca7cc4
lr: 000000000eca7c44
sp: fafb4b0
msr: 8000000000001000
dar: 10000000
dsisr: 42000000
current = 0xc0000003fafa7180
paca = 0xc000000007d75e80 softe: 0 irq_happened: 0x01
pid = 14617, comm = bash
cpu 0x15: Exception 300 (Data Access) in xmon, returning to main loop
xmon: WARNING: bad recursive fault on cpu 0x15The root cause is that xmon is calling RTAS to turn off the surveillance
when entering xmon, and RTAS is requiring big endian parameters.This patch is byte swapping the RTAS arguments when running in LE mode.
Cc: stable@vger.kernel.org
Signed-off-by: Laurent Dufour
Signed-off-by: Michael Ellerman
12 Nov, 2014
1 commit
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dump_tlb_44x() is only defined when 44x=y, but the ifdef in xmon.c
checks for 4xx, leading to a build failure:arch/powerpc/xmon/xmon.c:912:4: error: implicit declaration of function 'dump_tlb_44x'
Signed-off-by: Michael Ellerman
03 Nov, 2014
1 commit
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The generic Linux framework to power off the machine is a function pointer
called pm_power_off. The trick about this pointer is that device drivers can
potentially implement it rather than board files.Today on powerpc we set pm_power_off to invoke our generic full machine power
off logic which then calls ppc_md.power_off to invoke machine specific power
off.However, when we want to add a power off GPIO via the "gpio-poweroff" driver,
this card house falls apart. That driver only registers itself if pm_power_off
is NULL to ensure it doesn't override board specific logic. However, since we
always set pm_power_off to the generic power off logic (which will just not
power off the machine if no ppc_md.power_off call is implemented), we can't
implement power off via the generic GPIO power off driver.To fix this up, let's get rid of the ppc_md.power_off logic and just always use
pm_power_off as was intended. Then individual drivers such as the GPIO power off
driver can implement power off logic via that function pointer.With this patch set applied and a few patches on top of QEMU that implement a
power off GPIO on the virt e500 machine, I can successfully turn off my virtual
machine after halt.Signed-off-by: Alexander Graf
[mpe: Squash into one patch and update changelog based on cover letter]
Signed-off-by: Michael Ellerman
13 Aug, 2014
1 commit
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xmon only soft disables interrupts. This seems like a bad idea - we
certainly don't want decrementer and PMU exceptions going off when
we are debugging something inside xmon.This issue was uncovered when the hard lockup detector went off
inside xmon. To ensure we wont get a spurious hard lockup warning,
I also call touch_nmi_watchdog() when exiting xmon.Signed-off-by: Anton Blanchard
Signed-off-by: Benjamin Herrenschmidt
28 Jul, 2014
2 commits
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We now only support cpus that use an SLB, so we don't need an MMU
feature to indicate that.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
Old cpus didn't have a Segment Lookaside Buffer (SLB), instead they had
a Segment Table (STAB). Now that we've dropped support for those cpus,
we can remove the STAB support entirely.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt
11 Jun, 2014
1 commit
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This makes sure format strings cannot leak into printk (the string has
already been correctly processed for format arguments).Signed-off-by: Kees Cook
Signed-off-by: Benjamin Herrenschmidt
05 Jun, 2014
1 commit
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There are a couple of places where xmon is using %x to print values that
are unsigned long.I found this out the hard way recently:
0:mon> p c000000000d0e7c8 c00000033dc90000 00000000a0000089 c000000000000000
return value is 0x96300500Which is calling find_linux_pte_or_hugepte(), the result should be a
kernel pointer. After decoding the page tables by hand I discovered the
correct value was c000000396300500.So fix up that case and a few others.
We also use a mix of 0x%x, %x and %u to print cpu numbers. So
standardise on 0x%x.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt
20 May, 2014
1 commit
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Currently, on 8641D, which doesn't set CONFIG_HAVE_HW_BREAKPOINT
we get the following splat:BUG: using smp_processor_id() in preemptible [00000000] code: login/1382
caller is set_breakpoint+0x1c/0xa0
CPU: 0 PID: 1382 Comm: login Not tainted 3.15.0-rc3-00041-g2aafe1a4d451 #1
Call Trace:
[decd5d80] [c0008dc4] show_stack+0x50/0x158 (unreliable)
[decd5dc0] [c03c6fa0] dump_stack+0x7c/0xdc
[decd5de0] [c01f8818] check_preemption_disabled+0xf4/0x104
[decd5e00] [c00086b8] set_breakpoint+0x1c/0xa0
[decd5e10] [c00d4530] flush_old_exec+0x2bc/0x588
[decd5e40] [c011c468] load_elf_binary+0x2ac/0x1164
[decd5ec0] [c00d35f8] search_binary_handler+0xc4/0x1f8
[decd5ef0] [c00d4ee8] do_execve+0x3d8/0x4b8
[decd5f40] [c001185c] ret_from_syscall+0x0/0x38
--- Exception: c01 at 0xfeee554
LR = 0xfeee7d4The call path in this case is:
flush_thread
--> set_debug_reg_defaults
--> set_breakpoint
--> __get_cpu_varSince preemption is enabled in the cleanup of flush thread, and
there is no need to disable it, introduce the distinction between
set_breakpoint and __set_breakpoint, leaving only the flush_thread
instance as the current user of set_breakpoint.Signed-off-by: Paul Gortmaker
Signed-off-by: Benjamin Herrenschmidt
07 Mar, 2014
1 commit
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This patch fixes the disassembler of the powerpc kernel debugger xmon,
for little-endian.Signed-off-by: Philippe Bergheaud
Signed-off-by: Benjamin Herrenschmidt
11 Feb, 2014
3 commits
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Currently we set our cpu's bit in cpus_in_xmon, and then we take the
output lock and print the exception information.This can race with the master cpu entering the command loop and printing
the backtrace. The result is that the backtrace gets garbled with
another cpu's exception print out.Fix it by delaying the set of cpus_in_xmon until we are finished
printing.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
As far as I can tell, our 70s era timeout loop in get_output_lock() is
generating no code.This leads to the hostile takeover happening more or less simultaneously
on all cpus. The result is "interesting", some example output that is
more readable than most:cpu 0x1: Vector: 100 (Scypsut e0mx bR:e setV)e catto xc0p:u[ c 00
c0:0 000t0o0V0erc0td:o5 rfc28050000]0c00 0 0 0 6t(pSrycsV1ppuot
uxe 1m 2 0Rx21e3:0s0ce000c00000t00)00 60602oV2SerucSayt0y 0p 1sxsFix it by using udelay() in the timeout loop. The wait time and check
frequency are arbitrary, but seem to work OK. We already rely on
udelay() working so this is not a new dependency.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
If we enter with xmon_speaker != 0 we skip the first cmpxchg(), we also
skip the while loop because xmon_speaker != last_speaker (0) - meaning we
skip the second cmpxchg() also.Following that code path the compiler sees no memory barriers and so is
within its rights to never reload xmon_speaker. The end result is we loop
forever.This manifests as all cpus being in xmon ('c' command), but they refuse
to take control when you switch to them ('c x' for cpu # x).I have seen this deadlock in practice and also checked the generated code to
confirm this is what's happening.The simplest fix is just to always try the cmpxchg().
Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt
05 Dec, 2013
1 commit
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This patch introduces exclusive emergency stack for machine check exception.
We use emergency stack to handle machine check exception so that we can save
MCE information (srr1, srr0, dar and dsisr) before turning on ME bit and be
ready for re-entrancy. This helps us to prevent clobbering of MCE information
in case of nested machine checks.The reason for using emergency stack over normal kernel stack is that the
machine check might occur in the middle of setting up a stack frame which may
result into improper use of kernel stack.Signed-off-by: Mahesh Salgaonkar
Acked-by: Paul Mackerras
Signed-off-by: Benjamin Herrenschmidt
05 Sep, 2013
1 commit
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Commit 24ec2125f3 ("powerpc/xmon: Use cpumask iterator to avoid warning")
replaced a loop from 0 to NR_CPUS-1 with a for_each_possible_cpu() loop,
which means that if the last possible cpu is in xmon, we print the
wrong value for the end of the range. For example, if 4 cpus are
possible, NR_CPUS is 128, and all cpus are in xmon, we print "0-7f"
rather than "0-3". The code also assumes that the set of possible
cpus is contiguous, which may not necessarily be true.This fixes the code to check explicitly for contiguity, and to print
the ending value correctly.Signed-off-by: Paul Mackerras
Signed-off-by: Benjamin Herrenschmidt
27 Aug, 2013
1 commit
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We haven't updated these for a while it seems, it's nice to have in the
oops output.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt
03 May, 2013
1 commit
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Pull powerpc update from Benjamin Herrenschmidt:
"The main highlights this time around are:- A pile of addition POWER8 bits and nits, such as updated
performance counter support (Michael Ellerman), new branch history
buffer support (Anshuman Khandual), base support for the new PCI
host bridge when not using the hypervisor (Gavin Shan) and other
random related bits and fixes from various contributors.- Some rework of our page table format by Aneesh Kumar which fixes a
thing or two and paves the way for THP support. THP itself will
not make it this time around however.- More Freescale updates, including Altivec support on the new e6500
cores, new PCI controller support, and a pile of new boards support
and updates.- The usual batch of trivial cleanups & fixes"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (156 commits)
powerpc: Fix build error for book3e
powerpc: Context switch the new EBB SPRs
powerpc: Turn on the EBB H/FSCR bits
powerpc: Replace CPU_FTR_BCTAR with CPU_FTR_ARCH_207S
powerpc: Setup BHRB instructions facility in HFSCR for POWER8
powerpc: Fix interrupt range check on debug exception
powerpc: Update tlbie/tlbiel as per ISA doc
powerpc: Print page size info during boot
powerpc: print both base and actual page size on hash failure
powerpc: Fix hpte_decode to use the correct decoding for page sizes
powerpc: Decode the pte-lp-encoding bits correctly.
powerpc: Use encode avpn where we need only avpn values
powerpc: Reduce PTE table memory wastage
powerpc: Move the pte free routines from common header
powerpc: Reduce the PTE_INDEX_SIZE
powerpc: Switch 16GB and 16MB explicit hugepages to a different page table format
powerpc: New hugepage directory format
powerpc: Don't truncate pgd_index wrongly
powerpc: Don't hard code the size of pte page
powerpc: Save DAR and DSISR in pt_regs on MCE
...
01 May, 2013
1 commit
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Currently help message of /proc/sysrq-trigger highlight its
upper-case characters, like below:SysRq : HELP : loglevel(0-9) reBoot Crash terminate-all-tasks(E)
memory-full-oom-kill(F) kill-all-tasks(I) ...this would confuse user trigger sysrq by upper-case character, which is
inconsistent with the real lower-case character registed key.This inconsistent help message will also lead more confused when
26 upper-case letters put into use in future.This patch fix powerpc xmon sysrq key: "xmon(x)"
Signed-off-by: zhangwei(Jovi)
Cc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
30 Apr, 2013
1 commit
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We were not saving DAR and DSISR on MCE. Save then and also print the values
along with exception details in xmon.Acked-by: Paul Mackerras
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Benjamin Herrenschmidt
16 Jan, 2013
1 commit
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With allmodconfig we are getting:
drivers/tty/synclink_gt.c:160:12: error: conflicting types for 'set_break'
arch/powerpc/include/asm/debug.h:49:5: note: previous declaration of 'set_break' was heredrivers/tty/synclinkmp.c:526:12: error: conflicting types for 'set_break'
arch/powerpc/include/asm/debug.h:49:5: note: previous declaration of 'set_break' was hereThis renames set_break to set_breakpoint to avoid this naming conflict
Signed-off-by: Michael Neuling
Reported-by: Fengguang Wu
Signed-off-by: Benjamin Herrenschmidt
10 Jan, 2013
2 commits
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This is a rewrite so that we don't assume we are using the DABR throughout the
code. We now use the arch_hw_breakpoint to store the breakpoint in a generic
manner in the thread_struct, rather than storing the raw DABR value.The ptrace GET/SET_DEBUGREG interface currently passes the raw DABR in from
userspace. We keep this functionality, so that future changes (like the POWER8
DAWR), will still fake the DABR to userspace.Signed-off-by: Michael Neuling
Signed-off-by: Benjamin Herrenschmidt -
Finally remove the two level TOC and build with -mcmodel=medium.
Unfortunately we can't build modules with -mcmodel=medium due to
the tricks the kernel module loader plays with percpu data:# -mcmodel=medium breaks modules because it uses 32bit offsets from
# the TOC pointer to create pointers where possible. Pointers into the
# percpu data area are created by this method.
#
# The kernel module loader relocates the percpu data section from the
# original location (starting with 0xd...) to somewhere in the base
# kernel percpu data space (starting with 0xc...). We need a full
# 64bit relocation for this to work, hence -mcmodel=large.On older kernels we fall back to the two level TOC (-mminimal-toc)
Signed-off-by: Anton Blanchard
Signed-off-by: Benjamin Herrenschmidt
15 Nov, 2012
9 commits
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It is possible to configure a kernel which has xmon enabled, but has no
udbg backend to provide IO. This can make xmon rather confusing, as it
produces no output, blocks for two seconds, and then returns.As a last resort we can instead try to printk(), which may deadlock or
otherwise crash, but tries quite hard not to.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
Currently xmon_depth_to_print is static and global, but it's only
ever used in xmon_show_stack().At least with a modern compiler it's inlined, so there's no point
in it being static, we could #define it but it's only used in one
place.By reworking the logic we can drop count and just decrement the
max value as a loop counter. Also switch to a while loop so we
actually print no more than 64 frames as you'd expect based on the
variable name.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
We use STACK_FRAME_OVERHEAD in the exception vectors to establish
the exception frame, so it should be good enough to use here.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
Neither REGS_PER_LINE or LAST_VOLATILE are used, nor have they ever
been as far back as I can see.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
We have two #defines that rename scanhex() and skipbl() to
xmon_scanhex() and xmon_skipbl() - but no one ever uses those
names.So the only effect is to rename the actual symbols in the generated
code, and AFACIS there is no reason to do that, so drop them.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
The routines in start.c are only ever called from nonstdio.c, so if we
move them in there they can become static which is nice.I suspect the idea behind the separation was that start.c could be
replaced in order to build xmon in userland. If anyone still cares about
doing that we could handle that with an ifdef or two.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
xmon_getchar() is only called from within nonstdio.c, so make it static.
Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
This has been empty since 2005, commit 51d3082 "Unify udbg (#2)".
Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
It looks like xmon_expect() was used for doing xmon over a modem (!?),
that code was dropped in 2005 in commit 51d3082 "Unify udbg (#2)".Once xmon_expect() is gone xmon_read_poll() is unused, drop it too.
Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt
18 Sep, 2012
1 commit
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This was originally motivated by a desire to see the mapping between
logical and hardware cpu numbers.But it seemed that it made more sense to just add a command to dump
(most of) the paca.With no arguments "dp" will dump the paca for the current cpu.
It also takes an argument, eg. "dp 3" which is the logical cpu number
in hex. This form does not check if the cpu is possible, but displays
the paca regardless, as well as the cpu's state in the possible, present
and online masks.Thirdly, "dpa" will display the paca for all possible cpus. If there are
no possible cpus, like early in boot, it will tell you that.Sample output, number in brackets is the offset into the struct:
2:mon> dp 3
paca for cpu 0x3 @ c00000000ff20a80:
possible = yes
present = yes
online = yes
lock_token = 0x8000 (0x8)
paca_index = 0x3 (0xa)
kernel_toc = 0xc00000000144f990 (0x10)
kernelbase = 0xc000000000000000 (0x18)
kernel_msr = 0xb000000000001032 (0x20)
stab_real = 0x0 (0x28)
stab_addr = 0x0 (0x30)
emergency_sp = 0xc00000003ffe4000 (0x38)
data_offset = 0xa40000 (0x40)
hw_cpu_id = 0x9 (0x50)
cpu_start = 0x1 (0x52)
kexec_state = 0x0 (0x53)
__current = 0xc00000007e568680 (0x218)
kstack = 0xc00000007e5a3e30 (0x220)
stab_rr = 0x1a (0x228)
saved_r1 = 0xc00000007e7cb450 (0x230)
trap_save = 0x0 (0x240)
soft_enabled = 0x0 (0x242)
irq_happened = 0x0 (0x243)
io_sync = 0x0 (0x244)
irq_work_pending = 0x0 (0x245)
nap_state_lost = 0x0 (0x246)Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt
10 Sep, 2012
1 commit
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Rework set_dabr to take a DABRX value as well.
Both the pseries and PS3 hypervisors do some checks on the DABRX
values that are passed in the hcall. This patch stops bogus values
from being passed to hypervisor. Also, in the case where we are
clearing the breakpoint, where DABR and DABRX are zero, we modify the
DABRX value to make it valid so that the hcall won't fail.Signed-off-by: Michael Neuling
Signed-off-by: Benjamin Herrenschmidt
24 Aug, 2012
1 commit
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There are a few whitespace goolies in xmon.c, some of them appear to
be my fault. Fix them all in one go.Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt