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authorNicholas Miehlbradt <nicholas@linux.ibm.com>2022-09-26 09:57:23 +0200
committerMichael Ellerman <mpe@ellerman.id.au>2022-09-28 11:22:10 +0200
commit5e8b2c4dd3a0a4a2966e61d60dbeafab441cff28 (patch)
tree58f87c7c633d79d7f2f652750816159d25e31032 /arch/powerpc/mm
parentpowerpc/64s: update cpu selection options (diff)
downloadlinux-5e8b2c4dd3a0a4a2966e61d60dbeafab441cff28.tar.xz
linux-5e8b2c4dd3a0a4a2966e61d60dbeafab441cff28.zip
powerpc/64s: Add DEBUG_PAGEALLOC for radix
There is support for DEBUG_PAGEALLOC on hash but not on radix. Add support on radix. Signed-off-by: Nicholas Miehlbradt <nicholas@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220926075726.2846-1-nicholas@linux.ibm.com
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/book3s64/radix_pgtable.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index 60c277a9b043..94a05c66be95 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -30,6 +30,7 @@
#include <asm/trace.h>
#include <asm/uaccess.h>
#include <asm/ultravisor.h>
+#include <asm/set_memory.h>
#include <trace/events/thp.h>
@@ -267,13 +268,16 @@ static unsigned long next_boundary(unsigned long addr, unsigned long end)
static int __meminit create_physical_mapping(unsigned long start,
unsigned long end,
- unsigned long max_mapping_size,
int nid, pgprot_t _prot)
{
unsigned long vaddr, addr, mapping_size = 0;
bool prev_exec, exec = false;
pgprot_t prot;
int psize;
+ unsigned long max_mapping_size = radix_mem_block_size;
+
+ if (debug_pagealloc_enabled())
+ max_mapping_size = PAGE_SIZE;
start = ALIGN(start, PAGE_SIZE);
end = ALIGN_DOWN(end, PAGE_SIZE);
@@ -352,7 +356,6 @@ static void __init radix_init_pgtable(void)
}
WARN_ON(create_physical_mapping(start, end,
- radix_mem_block_size,
-1, PAGE_KERNEL));
}
@@ -850,7 +853,7 @@ int __meminit radix__create_section_mapping(unsigned long start,
}
return create_physical_mapping(__pa(start), __pa(end),
- radix_mem_block_size, nid, prot);
+ nid, prot);
}
int __meminit radix__remove_section_mapping(unsigned long start, unsigned long end)
@@ -899,7 +902,14 @@ void __meminit radix__vmemmap_remove_mapping(unsigned long start, unsigned long
#ifdef CONFIG_DEBUG_PAGEALLOC
void radix__kernel_map_pages(struct page *page, int numpages, int enable)
{
- pr_warn_once("DEBUG_PAGEALLOC not supported in radix mode\n");
+ unsigned long addr;
+
+ addr = (unsigned long)page_address(page);
+
+ if (enable)
+ set_memory_p(addr, numpages);
+ else
+ set_memory_np(addr, numpages);
}
#endif