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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/x86/mm/srat.c
downloadlinux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz
linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'arch/x86/mm/srat.c')
-rw-r--r--arch/x86/mm/srat.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c
new file mode 100644
index 000000000..44ca66651
--- /dev/null
+++ b/arch/x86/mm/srat.c
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ACPI 3.0 based NUMA setup
+ * Copyright 2004 Andi Kleen, SuSE Labs.
+ *
+ * Reads the ACPI SRAT table to figure out what memory belongs to which CPUs.
+ *
+ * Called from acpi_numa_init while reading the SRAT and SLIT tables.
+ * Assumes all memory regions belonging to a single proximity domain
+ * are in one chunk. Holes between them will be included in the node.
+ */
+
+#include <linux/kernel.h>
+#include <linux/acpi.h>
+#include <linux/mmzone.h>
+#include <linux/bitmap.h>
+#include <linux/init.h>
+#include <linux/topology.h>
+#include <linux/mm.h>
+#include <asm/proto.h>
+#include <asm/numa.h>
+#include <asm/e820/api.h>
+#include <asm/apic.h>
+#include <asm/uv/uv.h>
+
+/* Callback for Proximity Domain -> x2APIC mapping */
+void __init
+acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
+{
+ int pxm, node;
+ int apic_id;
+
+ if (srat_disabled())
+ return;
+ if (pa->header.length < sizeof(struct acpi_srat_x2apic_cpu_affinity)) {
+ bad_srat();
+ return;
+ }
+ if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0)
+ return;
+ pxm = pa->proximity_domain;
+ apic_id = pa->apic_id;
+ if (!apic_id_valid(apic_id)) {
+ pr_info("SRAT: PXM %u -> X2APIC 0x%04x ignored\n", pxm, apic_id);
+ return;
+ }
+ node = acpi_map_pxm_to_node(pxm);
+ if (node < 0) {
+ printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
+ bad_srat();
+ return;
+ }
+
+ if (apic_id >= MAX_LOCAL_APIC) {
+ printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%04x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node);
+ return;
+ }
+ set_apicid_to_node(apic_id, node);
+ node_set(node, numa_nodes_parsed);
+ node_set(node, numa_phys_nodes_parsed);
+ pr_debug("SRAT: PXM %u -> APIC 0x%04x -> Node %u\n", pxm, apic_id, node);
+}
+
+/* Callback for Proximity Domain -> LAPIC mapping */
+void __init
+acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
+{
+ int pxm, node;
+ int apic_id;
+
+ if (srat_disabled())
+ return;
+ if (pa->header.length != sizeof(struct acpi_srat_cpu_affinity)) {
+ bad_srat();
+ return;
+ }
+ if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0)
+ return;
+ pxm = pa->proximity_domain_lo;
+ if (acpi_srat_revision >= 2)
+ pxm |= *((unsigned int*)pa->proximity_domain_hi) << 8;
+ node = acpi_map_pxm_to_node(pxm);
+ if (node < 0) {
+ printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
+ bad_srat();
+ return;
+ }
+
+ if (get_uv_system_type() >= UV_X2APIC)
+ apic_id = (pa->apic_id << 8) | pa->local_sapic_eid;
+ else
+ apic_id = pa->apic_id;
+
+ if (apic_id >= MAX_LOCAL_APIC) {
+ printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%02x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node);
+ return;
+ }
+
+ set_apicid_to_node(apic_id, node);
+ node_set(node, numa_nodes_parsed);
+ node_set(node, numa_phys_nodes_parsed);
+ pr_debug("SRAT: PXM %u -> APIC 0x%02x -> Node %u\n", pxm, apic_id, node);
+}
+
+int __init x86_acpi_numa_init(void)
+{
+ int ret;
+
+ ret = acpi_numa_init();
+ if (ret < 0)
+ return ret;
+ return srat_disabled() ? -EINVAL : 0;
+}