The quilt patch titled
Subject: x86/numa_emu: split __apicid_to_node update to a helper function
has been removed from the -mm tree. Its filename was
x86-numa_emu-split-__apicid_to_node-update-to-a-helper-function.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: "Mike Rapoport (Microsoft)" <rppt@xxxxxxxxxx>
Subject: x86/numa_emu: split __apicid_to_node update to a helper function
Date: Wed, 7 Aug 2024 09:40:58 +0300
This is required to make numa emulation code architecture independent so
that it can be moved to generic code in following commits.
Link: https://lkml.kernel.org/r/20240807064110.1003856-15-rppt@xxxxxxxxxx
Signed-off-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Tested-by: Zi Yan <ziy@xxxxxxxxxx> # for x86_64 and arm64
Tested-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> [arm64 + CXL via QEMU]
Acked-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Cc: Andreas Larsson <andreas@xxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Huacai Chen <chenhuacai@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
Cc: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>
Cc: Rafael J. Wysocki <rafael@xxxxxxxxxx>
Cc: Rob Herring (Arm) <robh@xxxxxxxxxx>
Cc: Samuel Holland <samuel.holland@xxxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/include/asm/numa.h | 2 ++
arch/x86/mm/numa.c | 22 ++++++++++++++++++++++
arch/x86/mm/numa_emulation.c | 14 +-------------
3 files changed, 25 insertions(+), 13 deletions(-)
--- a/arch/x86/include/asm/numa.h~x86-numa_emu-split-__apicid_to_node-update-to-a-helper-function
+++ a/arch/x86/include/asm/numa.h
@@ -72,6 +72,8 @@ void debug_cpumask_set_cpu(int cpu, int
#ifdef CONFIG_NUMA_EMU
int numa_emu_cmdline(char *str);
+void __init numa_emu_update_cpu_to_node(int *emu_nid_to_phys,
+ unsigned int nr_emu_nids);
#else /* CONFIG_NUMA_EMU */
static inline int numa_emu_cmdline(char *str)
{
--- a/arch/x86/mm/numa.c~x86-numa_emu-split-__apicid_to_node-update-to-a-helper-function
+++ a/arch/x86/mm/numa.c
@@ -852,6 +852,28 @@ EXPORT_SYMBOL(cpumask_of_node);
#endif /* !CONFIG_DEBUG_PER_CPU_MAPS */
+#ifdef CONFIG_NUMA_EMU
+void __init numa_emu_update_cpu_to_node(int *emu_nid_to_phys,
+ unsigned int nr_emu_nids)
+{
+ int i, j;
+
+ /*
+ * Transform __apicid_to_node table to use emulated nids by
+ * reverse-mapping phys_nid. The maps should always exist but fall
+ * back to zero just in case.
+ */
+ for (i = 0; i < ARRAY_SIZE(__apicid_to_node); i++) {
+ if (__apicid_to_node[i] == NUMA_NO_NODE)
+ continue;
+ for (j = 0; j < nr_emu_nids; j++)
+ if (__apicid_to_node[i] == emu_nid_to_phys[j])
+ break;
+ __apicid_to_node[i] = j < nr_emu_nids ? j : 0;
+ }
+}
+#endif /* CONFIG_NUMA_EMU */
+
#ifdef CONFIG_NUMA_KEEP_MEMINFO
static int meminfo_to_nid(struct numa_meminfo *mi, u64 start)
{
--- a/arch/x86/mm/numa_emulation.c~x86-numa_emu-split-__apicid_to_node-update-to-a-helper-function
+++ a/arch/x86/mm/numa_emulation.c
@@ -476,19 +476,7 @@ void __init numa_emulation(struct numa_m
ei.blk[i].nid != NUMA_NO_NODE)
node_set(ei.blk[i].nid, numa_nodes_parsed);
- /*
- * Transform __apicid_to_node table to use emulated nids by
- * reverse-mapping phys_nid. The maps should always exist but fall
- * back to zero just in case.
- */
- for (i = 0; i < ARRAY_SIZE(__apicid_to_node); i++) {
- if (__apicid_to_node[i] == NUMA_NO_NODE)
- continue;
- for (j = 0; j < ARRAY_SIZE(emu_nid_to_phys); j++)
- if (__apicid_to_node[i] == emu_nid_to_phys[j])
- break;
- __apicid_to_node[i] = j < ARRAY_SIZE(emu_nid_to_phys) ? j : 0;
- }
+ numa_emu_update_cpu_to_node(emu_nid_to_phys, ARRAY_SIZE(emu_nid_to_phys));
/* make sure all emulated nodes are mapped to a physical node */
for (i = 0; i < ARRAY_SIZE(emu_nid_to_phys); i++)
_
Patches currently in -mm which might be from rppt@xxxxxxxxxx are
