On Thu, 2017-03-30 at 22:13 -0700, Sukadev Bhattiprolu wrote:
> +static void *map_mmio_region(char *name, uint64_t start, int len)
> +{
> + void *map;
> +
> + if (!request_mem_region(start, len, name)) {
> + pr_devel("%s(): request_mem_region(0x%llx, %d) failed\n",
> +
On Thu, 2017-03-30 at 22:13 -0700, Sukadev Bhattiprolu wrote:
>
> + p = of_get_property(dn, "vas-id", NULL);
> + if (!p) {
> + pr_err("VAS: NULL vas-id? %p\n", p);
> + return -ENODEV;
> + }
> +
> + vinst->vas_id = of_read_number(p, 1);
of_property_read_u32(
On Thu, 2017-03-30 at 22:13 -0700, Sukadev Bhattiprolu wrote:
> +config VAS
> + tristate "IBM Virtual Accelerator Switchboard (VAS)"
CONFIG_IBM_VAS or PPC_VAS ... too high risk of collision otherwise
Ben.
On Mon, 24 Apr 2017 15:09:02 +1000
Benjamin Herrenschmidt wrote:
> On Mon, 2017-04-24 at 14:55 +1000, Nicholas Piggin wrote:
> > On Mon, 24 Apr 2017 11:47:48 +1000
> > > Benjamin Herrenschmidt wrote:
> >
> > > On Thu, 2017-03-30 at 22:10 +1000, Nicholas Piggin wrote:
> > > > There are s
On Mon, 2017-04-24 at 14:55 +1000, Nicholas Piggin wrote:
> On Mon, 24 Apr 2017 11:47:48 +1000
> > Benjamin Herrenschmidt wrote:
>
> > On Thu, 2017-03-30 at 22:10 +1000, Nicholas Piggin wrote:
> > > There are some windows in opal entry/exit that can not recover from a
> > > re-entrant interrupt (
On Mon, 24 Apr 2017 11:47:48 +1000
Benjamin Herrenschmidt wrote:
> On Thu, 2017-03-30 at 22:10 +1000, Nicholas Piggin wrote:
> > There are some windows in opal entry/exit that can not recover from a
> > re-entrant interrupt (e.g., machine check) due to using SRR registers,
> > but they currently
On 24/04/17 10:35, Michael Ellerman wrote:
Currently the code that dumps SLB entries uses a double-nested if. This
means the actual dumping logic is a bit squashed. Deindent it by using
continue.
Signed-off-by: Michael Ellerman
Reviewed-by: Rashmica Gupta
---
arch/powerpc/xmon/xmon.c |
On Mon, 24 Apr 2017 10:13:23 +1000
Benjamin Herrenschmidt wrote:
> On Sun, 2017-04-23 at 19:57 +1000, Nicholas Piggin wrote:
> > On Sun, 23 Apr 2017 10:39:11 +1000
> > Benjamin Herrenschmidt wrote:
> >
> > > On Sun, 2017-04-23 at 09:14 +1000, Nicholas Piggin wrote:
> > > > I think we were g
On (04/21/17 14:06), Petr Mladek wrote:
[..]
> > I agree that this_cpu_read(printk_context) covers slightly more than
> > logbuf_lock scope, so we may get positive this_cpu_read(printk_context)
> > with unlocked logbuf_lock, but I don't tend to think that it's a big
> > problem.
>
> PRINTK_SAFE_CO
On Thu, 2017-03-30 at 22:10 +1000, Nicholas Piggin wrote:
> There are some windows in opal entry/exit that can not recover from a
> re-entrant interrupt (e.g., machine check) due to using SRR registers,
> but they currently do not have MSR_RI clear.
>
> These were found by machine check injection
On Wed, 2017-04-19 at 16:48 -0400, Roy Pledge wrote:
> Rework ioremap() for PPC and ARM. The PPC devices require a
> non-coherent mapping while ARM will work with a non-cachable/write
> combine mapping.
>
> Signed-off-by: Roy Pledge
> ---
> drivers/soc/fsl/qbman/bman_portal.c | 16 +-
On Wed, 2017-04-19 at 16:48 -0400, Roy Pledge wrote:
> @@ -727,10 +730,81 @@ static int fsl_qman_probe(struct platform_device
> *pdev)
> qm_channel_caam = QMAN_CHANNEL_CAAM_REV3;
> }
>
> - ret = zero_priv_mem(dev, node, fqd_a, fqd_sz);
> - WARN_ON(ret);
> - if (ret
On Wed, 2017-04-19 at 16:48 -0400, Roy Pledge wrote:
> Updates the QMan and BMan device tree bindings for reserved memory
> nodes. This makes the reserved memory allocation compatiable with
> the shared-dma-pool usage.
>
> Signed-off-by: Roy Pledge
> ---
> Documentation/devicetree/bindings/soc/f
On Fri, 2017-04-21 at 00:36 +1000, Michael Ellerman wrote:
> Add powerpc support for mmap_rnd_bits and mmap_rnd_compat_bits, which are two
> sysctls that allow a user to configure the number of bits of randomness used
> for
> ASLR.
>
> Because of the way the Kconfig for ARCH_MMAP_RND_BITS is defi
On 4/23/2017 9:55 PM, Jiri Olsa wrote:
On Thu, Apr 20, 2017 at 08:07:50PM +0800, Jin Yao wrote:
SNIP
+#define X86_BR_TYPE_MAP_MAX 16
+
+static int
+common_branch_type(int type)
+{
+ int i, mask;
+ const int branch_map[X86_BR_TYPE_MAP_MAX] = {
+ PERF_BR_CALL,
Currently the code that dumps SLB entries uses a double-nested if. This
means the actual dumping logic is a bit squashed. Deindent it by using
continue.
Signed-off-by: Michael Ellerman
---
arch/powerpc/xmon/xmon.c | 39 ++-
1 file changed, 22 insertions(+), 17
On Sun, 2017-04-23 at 19:57 +1000, Nicholas Piggin wrote:
> On Sun, 23 Apr 2017 10:39:11 +1000
> Benjamin Herrenschmidt wrote:
>
> > On Sun, 2017-04-23 at 09:14 +1000, Nicholas Piggin wrote:
> > > I think we were going to take another look at moving the setup
> > > code
> > > later, but I think t
Excerpts from Michael Ellerman's message of April 22, 2017 11:25:
"Naveen N. Rao" writes:
When a kprobe is being registered, we use the symbol_name field to
lookup the address where the probe should be placed. Since this is a
user-provided field, let's ensure that the length of the string is
w
Excerpts from Paul Clarke's message of April 21, 2017 19:22:
Sent too soon. The suggestions don't guarantee null termination. Refined,
below. (Sorry for the noise.)
Yeah, the string operations here are a bit of a minefield...
On 04/21/2017 08:33 AM, Paul Clarke wrote:
On 04/21/2017 07:33
Excerpts from Masami Hiramatsu's message of April 21, 2017 19:12:
On Wed, 19 Apr 2017 16:38:22 +
"Naveen N. Rao" wrote:
Excerpts from Masami Hiramatsu's message of April 19, 2017 20:07:
> On Wed, 19 Apr 2017 18:21:02 +0530
> "Naveen N. Rao" wrote:
>
>> When a kprobe is being registered,
On Thu, Apr 20, 2017 at 08:07:50PM +0800, Jin Yao wrote:
SNIP
>
> +#define X86_BR_TYPE_MAP_MAX 16
> +
> +static int
> +common_branch_type(int type)
> +{
> + int i, mask;
> + const int branch_map[X86_BR_TYPE_MAP_MAX] = {
> + PERF_BR_CALL, /* X86_BR_CALL */
> +
On Thu, 2017-04-20 at 14:36:20 UTC, Michael Ellerman wrote:
> Add powerpc support for mmap_rnd_bits and mmap_rnd_compat_bits, which are two
> sysctls that allow a user to configure the number of bits of randomness used
> for
> ASLR.
>
> Because of the way the Kconfig for ARCH_MMAP_RND_BITS is def
On Wed, 2017-04-19 at 15:29:52 UTC, "Naveen N. Rao" wrote:
> Blacklist all the exception common/OOL handlers as the kernel stack is
> not yet setup, which means we can't take a trap at this point.
>
> Signed-off-by: Naveen N. Rao
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c
On Wed, 2017-04-19 at 15:29:51 UTC, "Naveen N. Rao" wrote:
> Introduce __head_end to mark end of the early fixed sections and use the
> same to blacklist all exception handlers from kprobes.
>
> Signed-off-by: Naveen N. Rao
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/7aa5b
On Wed, 2017-04-19 at 13:05:43 UTC, Nicholas Piggin wrote:
> The system reset idle handler system_reset_idle_common is relocated, so
> relocation is not required to branch to kvm_start_guest. The superfluous
> relocation does not result in incorrect code, but it does not compile
> outside of except
On Wed, 2017-04-19 at 12:52:23 UTC, "Naveen N. Rao" wrote:
> Move the stack setup and teardown code to the ftrace_graph_caller().
> This way, we don't incur the cost of setting it up unless function graph
> is enabled for this function.
>
> Also, remove the extraneous LR restore code after the fun
On Wed, 2017-04-19 at 12:51:06 UTC, "Naveen N. Rao" wrote:
> set_current_kprobe() already saves regs->msr into kprobe_saved_msr. Remove
> the redundant save.
>
> Signed-off-by: Naveen N. Rao
> Reviewed-by: Masami Hiramatsu
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/d08f8
On Wed, 2017-04-12 at 11:18:51 UTC, "Naveen N. Rao" wrote:
> Along similar lines as commit 9326638cbee2 ("kprobes, x86: Use
> NOKPROBE_SYMBOL() instead of __kprobes annotation"), convert __kprobes
> annotation to either NOKPROBE_SYMBOL() or nokprobe_inline. The latter
> forces inlining, in which ca
On Tue, 2017-04-11 at 17:42:31 UTC, Oliver O'Halloran wrote:
> The default implementation of ioremap_cache() is aliased to ioremap().
> On powerpc ioremap() creates cache-inhibited mappings by default which
> is almost certainly not what you wanted.
>
> Signed-off-by: Oliver O'Halloran
Applied t
christophe leroy writes:
> Le 22/04/2017 à 08:08, Michael Ellerman a écrit :
>> "Naveen N. Rao" writes:
>>> Excerpts from Christophe Leroy's message of April 21, 2017 18:32:
diff --git a/arch/powerpc/kernel/ftrace.c
b/arch/powerpc/kernel/ftrace.c
index 32509de6ce4c..06d2ac53f471 1
Commit-ID: 77e5849688670280b173bb9e0544e9da7b2acc36
Gitweb: http://git.kernel.org/tip/77e5849688670280b173bb9e0544e9da7b2acc36
Author: Paul E. McKenney
AuthorDate: Sat, 14 Jan 2017 13:32:50 -0800
Committer: Paul E. McKenney
CommitDate: Tue, 18 Apr 2017 11:20:15 -0700
rcu: Make arch sel
On Sun, 23 Apr 2017 10:39:11 +1000
Benjamin Herrenschmidt wrote:
> On Sun, 2017-04-23 at 09:14 +1000, Nicholas Piggin wrote:
> > I think we were going to take another look at moving the setup code
> > later, but I think that might wait until 4.13.
>
> Except without that we won't boot a post-P
On 4/20/2017 5:36 PM, Jiri Olsa wrote:
On Thu, Apr 20, 2017 at 08:07:48PM +0800, Jin Yao wrote:
v6:
Update according to the review comments from
Jiri Olsa . Major modifications are:
1. Move that multiline conditional code inside {} brackets.
2. Move branch_type_stat_display()
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