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authorLinus Torvalds <torvalds@linux-foundation.org>2020-08-08 14:16:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-08 14:16:12 -0700
commit06a81c1c7db9bd5de0bd38cd5acc44bb22b99150 (patch)
treefbdc1534ab98ec94b42c0273cee55e2fd30d68b7 /arch/arm64
parent11030fe96b57ad843518b0e9430f3cd4b3610ce2 (diff)
parenteaecca9e7710281be7c31d892c9f447eafd7ddd9 (diff)
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas: - Fix tegra194-cpufreq module build failure caused by __cpu_logical_map not being exported. - Improve fixed_addresses comment regarding the fixmap buffer sizes. * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Fix __cpu_logical_map undefined issue arm64/fixmap: make notes of fixed_addresses more precisely
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/include/asm/fixmap.h7
-rw-r--r--arch/arm64/include/asm/smp.h7
-rw-r--r--arch/arm64/kernel/setup.c8
-rw-r--r--arch/arm64/kernel/smp.c6
4 files changed, 19 insertions, 9 deletions
diff --git a/arch/arm64/include/asm/fixmap.h b/arch/arm64/include/asm/fixmap.h
index f987b8a8f325..4335800201c9 100644
--- a/arch/arm64/include/asm/fixmap.h
+++ b/arch/arm64/include/asm/fixmap.h
@@ -28,10 +28,9 @@
* compile time, but to set the physical address only
* in the boot process.
*
- * These 'compile-time allocated' memory buffers are
- * page-sized. Use set_fixmap(idx,phys) to associate
- * physical memory with fixmap indices.
- *
+ * Each enum increment in these 'compile-time allocated'
+ * memory buffers is page-sized. Use set_fixmap(idx,phys)
+ * to associate physical memory with a fixmap index.
*/
enum fixed_addresses {
FIX_HOLE,
diff --git a/arch/arm64/include/asm/smp.h b/arch/arm64/include/asm/smp.h
index a0c8a0b65259..0eadbf933e35 100644
--- a/arch/arm64/include/asm/smp.h
+++ b/arch/arm64/include/asm/smp.h
@@ -46,7 +46,12 @@ DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number);
* Logical CPU mapping.
*/
extern u64 __cpu_logical_map[NR_CPUS];
-#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
+extern u64 cpu_logical_map(int cpu);
+
+static inline void set_cpu_logical_map(int cpu, u64 hwid)
+{
+ __cpu_logical_map[cpu] = hwid;
+}
struct seq_file;
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 87e81d29e6fb..77c4c9bad1b8 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -85,7 +85,7 @@ u64 __cacheline_aligned boot_args[4];
void __init smp_setup_processor_id(void)
{
u64 mpidr = read_cpuid_mpidr() & MPIDR_HWID_BITMASK;
- cpu_logical_map(0) = mpidr;
+ set_cpu_logical_map(0, mpidr);
/*
* clear __my_cpu_offset on boot CPU to avoid hang caused by
@@ -276,6 +276,12 @@ arch_initcall(reserve_memblock_reserved_regions);
u64 __cpu_logical_map[NR_CPUS] = { [0 ... NR_CPUS-1] = INVALID_HWID };
+u64 cpu_logical_map(int cpu)
+{
+ return __cpu_logical_map[cpu];
+}
+EXPORT_SYMBOL_GPL(cpu_logical_map);
+
void __init __no_sanitize_address setup_arch(char **cmdline_p)
{
init_mm.start_code = (unsigned long) _text;
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 8059d50bc8cb..03957a1ae6c0 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -566,7 +566,7 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor)
return;
/* map the logical cpu id to cpu MPIDR */
- cpu_logical_map(cpu_count) = hwid;
+ set_cpu_logical_map(cpu_count, hwid);
cpu_madt_gicc[cpu_count] = *processor;
@@ -680,7 +680,7 @@ static void __init of_parse_and_init_cpus(void)
goto next;
pr_debug("cpu logical map 0x%llx\n", hwid);
- cpu_logical_map(cpu_count) = hwid;
+ set_cpu_logical_map(cpu_count, hwid);
early_map_cpu_to_node(cpu_count, of_node_to_nid(dn));
next:
@@ -721,7 +721,7 @@ void __init smp_init_cpus(void)
for (i = 1; i < nr_cpu_ids; i++) {
if (cpu_logical_map(i) != INVALID_HWID) {
if (smp_cpu_setup(i))
- cpu_logical_map(i) = INVALID_HWID;
+ set_cpu_logical_map(i, INVALID_HWID);
}
}
}