qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Daniel Henrique Barboza <danielhb413@gmail.com>
To: qemu-devel@nongnu.org
Cc: aneesh.kumar@linux.ibm.com,
	Daniel Henrique Barboza <danielhb413@gmail.com>,
	qemu-ppc@nongnu.org, groug@kaod.org, david@gibson.dropbear.id.au
Subject: [RFC PATCH v2 7/7] spapr: move memory/cpu less check to spapr_numa_FORM1_affinity_init()
Date: Tue, 15 Jun 2021 22:19:44 -0300	[thread overview]
Message-ID: <20210616011944.2996399-8-danielhb413@gmail.com> (raw)
In-Reply-To: <20210616011944.2996399-1-danielhb413@gmail.com>

FORM2 NUMA affinity is prepared to deal with memory/cpu less
NUMA nodes. This is used by the DAX KMEM driver to locate a
PAPR SCM device that has a different latency than the original
NUMA node from the regular memory.

Move this verification to FORM1 affinity code.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
---
 hw/ppc/spapr.c      | 33 ---------------------------------
 hw/ppc/spapr_numa.c | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 33 deletions(-)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index b6b822a065..2216693e21 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2776,39 +2776,6 @@ static void spapr_machine_init(MachineState *machine)
     /* init CPUs */
     spapr_init_cpus(spapr);
 
-    /*
-     * check we don't have a memory-less/cpu-less NUMA node
-     * Firmware relies on the existing memory/cpu topology to provide the
-     * NUMA topology to the kernel.
-     * And the linux kernel needs to know the NUMA topology at start
-     * to be able to hotplug CPUs later.
-     */
-    if (machine->numa_state->num_nodes) {
-        for (i = 0; i < machine->numa_state->num_nodes; ++i) {
-            /* check for memory-less node */
-            if (machine->numa_state->nodes[i].node_mem == 0) {
-                CPUState *cs;
-                int found = 0;
-                /* check for cpu-less node */
-                CPU_FOREACH(cs) {
-                    PowerPCCPU *cpu = POWERPC_CPU(cs);
-                    if (cpu->node_id == i) {
-                        found = 1;
-                        break;
-                    }
-                }
-                /* memory-less and cpu-less node */
-                if (!found) {
-                    error_report(
-                       "Memory-less/cpu-less nodes are not supported (node %d)",
-                                 i);
-                    exit(1);
-                }
-            }
-        }
-
-    }
-
     spapr->gpu_numa_id = spapr_numa_initial_nvgpu_numa_id(machine);
 
     if ((!kvm_enabled() || kvmppc_has_cap_mmu_radix()) &&
diff --git a/hw/ppc/spapr_numa.c b/hw/ppc/spapr_numa.c
index e7d455d304..6a2eafcae1 100644
--- a/hw/ppc/spapr_numa.c
+++ b/hw/ppc/spapr_numa.c
@@ -162,6 +162,39 @@ static void spapr_numa_FORM1_affinity_init(SpaprMachineState *spapr,
                                            MachineState *machine)
 {
     bool using_legacy_numa = spapr_machine_using_legacy_numa(spapr);
+    int i;
+
+    /*
+     * check we don't have a memory-less/cpu-less NUMA node
+     * Firmware relies on the existing memory/cpu topology to provide the
+     * NUMA topology to the kernel.
+     * And the linux kernel needs to know the NUMA topology at start
+     * to be able to hotplug CPUs later.
+     */
+    if (machine->numa_state->num_nodes) {
+        for (i = 0; i < machine->numa_state->num_nodes; ++i) {
+            /* check for memory-less node */
+            if (machine->numa_state->nodes[i].node_mem == 0) {
+                CPUState *cs;
+                int found = 0;
+                /* check for cpu-less node */
+                CPU_FOREACH(cs) {
+                    PowerPCCPU *cpu = POWERPC_CPU(cs);
+                    if (cpu->node_id == i) {
+                        found = 1;
+                        break;
+                    }
+                }
+                /* memory-less and cpu-less node */
+                if (!found) {
+                    error_report(
+                       "Memory-less/cpu-less nodes are not supported (node %d)",
+                                 i);
+                    exit(1);
+                }
+            }
+        }
+    }
 
     /*
      * Legacy NUMA guests (pseries-5.1 and older, or guests with only
-- 
2.31.1



  parent reply	other threads:[~2021-06-16  1:35 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-16  1:19 [RFC PATCH v2 0/7] pSeries base FORM2 NUMA affinity support Daniel Henrique Barboza
2021-06-16  1:19 ` [RFC PATCH v2 1/7] spapr_numa.c: split FORM1 code into helpers Daniel Henrique Barboza
2021-06-16  1:19 ` [RFC PATCH v2 2/7] spapr: move NUMA data init to post-CAS Daniel Henrique Barboza
2021-06-16  1:19 ` [RFC PATCH v2 3/7] spapr_numa.c: base FORM2 NUMA affinity support Daniel Henrique Barboza
2021-06-16  1:19 ` [RFC PATCH v2 4/7] spapr: simplify spapr_numa_associativity_init params Daniel Henrique Barboza
2021-06-16  1:19 ` [RFC PATCH v2 5/7] nvdimm: add PPC64 'device-node' property Daniel Henrique Barboza
2021-06-16  1:19 ` [RFC PATCH v2 6/7] spapr_numa, spapr_nvdimm: write secondary NUMA domain for nvdimms Daniel Henrique Barboza
2021-06-16  1:19 ` Daniel Henrique Barboza [this message]
2021-06-24  5:47 ` [RFC PATCH v2 0/7] pSeries base FORM2 NUMA affinity support David Gibson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210616011944.2996399-8-danielhb413@gmail.com \
    --to=danielhb413@gmail.com \
    --cc=aneesh.kumar@linux.ibm.com \
    --cc=david@gibson.dropbear.id.au \
    --cc=groug@kaod.org \
    --cc=qemu-devel@nongnu.org \
    --cc=qemu-ppc@nongnu.org \
    --subject='Re: [RFC PATCH v2 7/7] spapr: move memory/cpu less check to spapr_numa_FORM1_affinity_init()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).