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authorChristophe Leroy <christophe.leroy@csgroup.eu>2021-12-02 13:00:18 +0100
committerMichael Ellerman <mpe@ellerman.id.au>2021-12-23 22:35:24 +1100
commitaf5304a7506588221d8317ef3f76585eb4483506 (patch)
tree99678764ed14701a77caaf0129950e6abf0f2df7
parentedecd2d6d6f4a122dd62bce654b4f63301e8ad9a (diff)
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powerpc/code-patching: Remove init_mem_is_free
A new state has been added by commit d2635f2012a4 ("mm: create a new system state and fix core_kernel_text()"). That state tells when initmem is about to be released and is redundant with init_mem_is_free. Remove init_mem_is_free. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/ad8c3ccb39c8edaa89fd3eda1cc7218baea1cde5.1638446239.git.christophe.leroy@csgroup.eu
-rw-r--r--arch/powerpc/include/asm/setup.h1
-rw-r--r--arch/powerpc/lib/code-patching.c3
-rw-r--r--arch/powerpc/mm/mem.c2
3 files changed, 1 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/setup.h b/arch/powerpc/include/asm/setup.h
index 71658504dadd..d0d3dd531c7f 100644
--- a/arch/powerpc/include/asm/setup.h
+++ b/arch/powerpc/include/asm/setup.h
@@ -9,7 +9,6 @@ extern void ppc_printk_progress(char *s, unsigned short hex);
extern unsigned int rtas_data;
extern unsigned long long memory_limit;
-extern bool init_mem_is_free;
extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
struct device_node;
diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c
index 7334ea99efd0..1c05fc725af8 100644
--- a/arch/powerpc/lib/code-patching.c
+++ b/arch/powerpc/lib/code-patching.c
@@ -15,7 +15,6 @@
#include <asm/tlbflush.h>
#include <asm/page.h>
#include <asm/code-patching.h>
-#include <asm/setup.h>
#include <asm/inst.h>
static int __patch_instruction(u32 *exec_addr, ppc_inst_t instr, u32 *patch_addr)
@@ -187,7 +186,7 @@ static int do_patch_instruction(u32 *addr, ppc_inst_t instr)
int patch_instruction(u32 *addr, ppc_inst_t instr)
{
/* Make sure we aren't patching a freed init section */
- if (init_mem_is_free && init_section_contains(addr, 4))
+ if (system_state >= SYSTEM_FREEING_INITMEM && init_section_contains(addr, 4))
return 0;
return do_patch_instruction(addr, instr);
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index bd5d91a31183..8e301cd8925b 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -26,7 +26,6 @@
#include <mm/mmu_decl.h>
unsigned long long memory_limit;
-bool init_mem_is_free;
unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)] __page_aligned_bss;
EXPORT_SYMBOL(empty_zero_page);
@@ -312,7 +311,6 @@ void free_initmem(void)
{
ppc_md.progress = ppc_printk_progress;
mark_initmem_nx();
- init_mem_is_free = true;
free_initmem_default(POISON_FREE_INITMEM);
}