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commit 05beacc799b2687e445651edf1a0431674c8b4d0
Author: buxiasen <buxia...@xiaomi.com>
AuthorDate: Fri Apr 25 19:56:53 2025 +0800
arch/arm/heap: reserved memory for mmu table
When using ARCH_PGPOOL_PBASE, always have to reserver mmu table,
not be used for kernel heap
Signed-off-by: buxiasen <buxia...@xiaomi.com>
---
arch/arm/src/common/arm_allocateheap.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm/src/common/arm_allocateheap.c
b/arch/arm/src/common/arm_allocateheap.c
index b72191b263..bf501faa6d 100644
--- a/arch/arm/src/common/arm_allocateheap.c
+++ b/arch/arm/src/common/arm_allocateheap.c
@@ -171,6 +171,10 @@ void weak_function up_allocate_kheap(void **heap_start,
size_t *heap_size)
uintptr_t base = g_idle_topstack;
uintptr_t size = CONFIG_ARCH_PGPOOL_PBASE - g_idle_topstack;
+
+ /* Reserved space for mmu kernel table */
+
+ size -= PGTABLE_SIZE * CONFIG_SMP_NCPUS;
# else
/* CONFIG_BUILD_KERNEL && !CONFIG_ARCH_PGPOOL_PBASE */
