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Message-ID: <20240505142600.2322517-15-rppt@kernel.org>
Date: Sun, 5 May 2024 17:25:57 +0300
From: Mike Rapoport <rppt@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Alexandre Ghiti <alexghiti@...osinc.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Björn Töpel <bjorn@...nel.org>,
Catalin Marinas <catalin.marinas@....com>,
Christophe Leroy <christophe.leroy@...roup.eu>,
"David S. Miller" <davem@...emloft.net>,
Dinh Nguyen <dinguyen@...nel.org>,
Donald Dutile <ddutile@...hat.com>,
Eric Chanudet <echanude@...hat.com>,
Heiko Carstens <hca@...ux.ibm.com>,
Helge Deller <deller@....de>,
Huacai Chen <chenhuacai@...nel.org>,
Kent Overstreet <kent.overstreet@...ux.dev>,
Liviu Dudau <liviu@...au.co.uk>,
Luis Chamberlain <mcgrof@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Masami Hiramatsu <mhiramat@...nel.org>,
Michael Ellerman <mpe@...erman.id.au>,
Mike Rapoport <rppt@...nel.org>,
Nadav Amit <nadav.amit@...il.com>,
Palmer Dabbelt <palmer@...belt.com>,
Peter Zijlstra <peterz@...radead.org>,
Philippe Mathieu-Daudé <philmd@...aro.org>,
Rick Edgecombe <rick.p.edgecombe@...el.com>,
Russell King <linux@...linux.org.uk>,
Sam Ravnborg <sam@...nborg.org>,
Song Liu <song@...nel.org>,
Steven Rostedt <rostedt@...dmis.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Thomas Gleixner <tglx@...utronix.de>,
Will Deacon <will@...nel.org>,
bpf@...r.kernel.org,
linux-arch@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
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x86@...nel.org
Subject: [PATCH v8 14/17] powerpc: use CONFIG_EXECMEM instead of CONFIG_MODULES where appropriate
From: "Mike Rapoport (IBM)" <rppt@...nel.org>
There are places where CONFIG_MODULES guards the code that depends on
memory allocation being done with module_alloc().
Replace CONFIG_MODULES with CONFIG_EXECMEM in such places.
Signed-off-by: Mike Rapoport (IBM) <rppt@...nel.org>
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/include/asm/kasan.h | 2 +-
arch/powerpc/kernel/head_8xx.S | 4 ++--
arch/powerpc/kernel/head_book3s_32.S | 6 +++---
arch/powerpc/lib/code-patching.c | 2 +-
arch/powerpc/mm/book3s32/mmu.c | 2 +-
6 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 1c4be3373686..2e586733a464 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -285,7 +285,7 @@ config PPC
select IOMMU_HELPER if PPC64
select IRQ_DOMAIN
select IRQ_FORCED_THREADING
- select KASAN_VMALLOC if KASAN && MODULES
+ select KASAN_VMALLOC if KASAN && EXECMEM
select LOCK_MM_AND_FIND_VMA
select MMU_GATHER_PAGE_SIZE
select MMU_GATHER_RCU_TABLE_FREE
diff --git a/arch/powerpc/include/asm/kasan.h b/arch/powerpc/include/asm/kasan.h
index 365d2720097c..b5bbb94c51f6 100644
--- a/arch/powerpc/include/asm/kasan.h
+++ b/arch/powerpc/include/asm/kasan.h
@@ -19,7 +19,7 @@
#define KASAN_SHADOW_SCALE_SHIFT 3
-#if defined(CONFIG_MODULES) && defined(CONFIG_PPC32)
+#if defined(CONFIG_EXECMEM) && defined(CONFIG_PPC32)
#define KASAN_KERN_START ALIGN_DOWN(PAGE_OFFSET - SZ_256M, SZ_256M)
#else
#define KASAN_KERN_START PAGE_OFFSET
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 647b0b445e89..edc479a7c2bc 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -199,12 +199,12 @@ instruction_counter:
mfspr r10, SPRN_SRR0 /* Get effective address of fault */
INVALIDATE_ADJACENT_PAGES_CPU15(r10, r11)
mtspr SPRN_MD_EPN, r10
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_EXECMEM
mfcr r11
compare_to_kernel_boundary r10, r10
#endif
mfspr r10, SPRN_M_TWB /* Get level 1 table */
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_EXECMEM
blt+ 3f
rlwinm r10, r10, 0, 20, 31
oris r10, r10, (swapper_pg_dir - PAGE_OFFSET)@ha
diff --git a/arch/powerpc/kernel/head_book3s_32.S b/arch/powerpc/kernel/head_book3s_32.S
index c1d89764dd22..57196883a00e 100644
--- a/arch/powerpc/kernel/head_book3s_32.S
+++ b/arch/powerpc/kernel/head_book3s_32.S
@@ -419,14 +419,14 @@ InstructionTLBMiss:
*/
/* Get PTE (linux-style) and check access */
mfspr r3,SPRN_IMISS
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_EXECMEM
lis r1, TASK_SIZE@h /* check if kernel address */
cmplw 0,r1,r3
#endif
mfspr r2, SPRN_SDR1
li r1,_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_EXEC
rlwinm r2, r2, 28, 0xfffff000
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_EXECMEM
li r0, 3
bgt- 112f
lis r2, (swapper_pg_dir - PAGE_OFFSET)@ha /* if kernel address, use */
@@ -442,7 +442,7 @@ InstructionTLBMiss:
andc. r1,r1,r2 /* check access & ~permission */
bne- InstructionAddressInvalid /* return if access not permitted */
/* Convert linux-style PTE to low word of PPC-style PTE */
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_EXECMEM
rlwimi r2, r0, 0, 31, 31 /* userspace ? -> PP lsb */
#endif
ori r1, r1, 0xe06 /* clear out reserved bits */
diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c
index c6ab46156cda..7af791446ddf 100644
--- a/arch/powerpc/lib/code-patching.c
+++ b/arch/powerpc/lib/code-patching.c
@@ -225,7 +225,7 @@ void __init poking_init(void)
static unsigned long get_patch_pfn(void *addr)
{
- if (IS_ENABLED(CONFIG_MODULES) && is_vmalloc_or_module_addr(addr))
+ if (IS_ENABLED(CONFIG_EXECMEM) && is_vmalloc_or_module_addr(addr))
return vmalloc_to_pfn(addr);
else
return __pa_symbol(addr) >> PAGE_SHIFT;
diff --git a/arch/powerpc/mm/book3s32/mmu.c b/arch/powerpc/mm/book3s32/mmu.c
index 100f999871bc..625fe7d08e06 100644
--- a/arch/powerpc/mm/book3s32/mmu.c
+++ b/arch/powerpc/mm/book3s32/mmu.c
@@ -184,7 +184,7 @@ unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
static bool is_module_segment(unsigned long addr)
{
- if (!IS_ENABLED(CONFIG_MODULES))
+ if (!IS_ENABLED(CONFIG_EXECMEM))
return false;
if (addr < ALIGN_DOWN(MODULES_VADDR, SZ_256M))
return false;
--
2.43.0
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