Currently, we duplicate parsing code for ibm,associativity and
ibm,associativity-lookup-arrays in the kernel. The associativity array provided
by these device tree properties are very similar and hence can use
a helper to parse the node id and numa distance details.
Signed-off-by: Aneesh Kumar
PAPR interface currently supports two different ways of communicating resource
grouping details to the OS. These are referred to as Form 0 and Form 1
associativity grouping. Form 0 is the older format and is now considered
deprecated. This patch adds another resource grouping named FORM2.
This helper is only used with the dispatch trace log collection.
A later patch will add Form2 affinity support and this change helps
in keeping that simpler. Also add a comment explaining we don't expect
the code to be called with FORM0
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
The associativity details of the newly added resourced are collected from
the hypervisor via "ibm,configure-connector" rtas call. Update the numa
distance details of the newly added numa node after the above call.
Instead of updating NUMA distance every time we lookup a node id
from the
Also make related code cleanup that will allow adding FORM2_AFFINITY in
later patches. No functional change in this patch.
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/firmware.h | 4 +--
arch/powerpc/include/asm/prom.h | 2 +-
No functional change in this patch.
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/numa.c | 38 +++---
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index
Form2 associativity adds a much more flexible NUMA topology layout
than what is provided by Form1. More details can be found in patch 7.
$ numactl -H
...
node distances:
node 0 1 2 3
0: 10 11 222 33
1: 44 10 55 66
2: 77 88 10 99
3: 101 121 132 10
$
After DAX
On Fri, Aug 06, 2021 at 09:53:59PM +0530, Aneesh Kumar K.V wrote:
> On 8/6/21 12:17 PM, David Gibson wrote:
> > On Tue, Jul 27, 2021 at 03:33:11PM +0530, Aneesh Kumar K.V wrote:
> > > Currently, we duplicate parsing code for ibm,associativity and
> > > ibm,associativity-lookup-arrays in the
> On 26-Jul-2021, at 9:19 AM, Nicholas Piggin wrote:
>
> Implement the P9 path PMU save/restore code in C, and remove the
> POWER9/10 code from the P7/8 path assembly.
>
> -449 cycles (8533) POWER9 virt-mode NULL hcall
>
> Signed-off-by: Nicholas Piggin
> ---
>
When using kprobe on powerpc booke series processor, Oops happens
as show bellow:
/ # echo "p:myprobe do_nanosleep" > /sys/kernel/debug/tracing/kprobe_events
/ # echo 1 > /sys/kernel/debug/tracing/events/kprobes/myprobe/enable
/ # sleep 1
[ 50.076730] Oops: Exception in kernel mode, sig: 5 [#1]
Hi Tom,
On 7/27/21 3:26 PM, Tom Lendacky wrote:
This patch series provides a generic helper function, prot_guest_has(),
to replace the sme_active(), sev_active(), sev_es_active() and
mem_encrypt_active() functions.
It is expected that as new protected virtualization technologies are
added to
A bit late, but technically the week isn't over yet! :D
On 23/07/21 20:09, Srikar Dronamraju wrote:
> * Valentin Schneider [2021-07-13 17:32:14]:
>> Now, let's take examples from your cover letter:
>>
>> node distances:
>> node 0 1 2 3 4 5 6 7
>> 0: 10 20 40 40 40
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