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mm/pkeys: remove unused tsk parameter from arch_set_user_pkey_access()

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The tsk parameter in arch_set_user_pkey_access() is never used in the
function implementations across all architectures (arm64, powerpc, x86).

Link: https://lkml.kernel.org/r/20260219063506.545148-1-sgsu.park@samsung.com
Signed-off-by: Seongsu Park <sgsu.park@samsung.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Seongsu Park 2026-02-19 15:35:06 +09:00 committed by Andrew Morton
parent 0e8cf9a31a
commit 3d443691ed
8 changed files with 10 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm64/include/asm/pkeys.h
View File

@ -12,8 +12,7 @@
#define arch_max_pkey() 8
int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
unsigned long init_val);
int arch_set_user_pkey_access(int pkey, unsigned long init_val);
static inline bool arch_pkeys_enabled(void)
{

2
arch/arm64/mm/mmu.c
View File

@ -2206,7 +2206,7 @@ void __cpu_replace_ttbr1(pgd_t *pgdp, bool cnp)
}
#ifdef CONFIG_ARCH_HAS_PKEYS
int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, unsigned long init_val)
int arch_set_user_pkey_access(int pkey, unsigned long init_val)
{
u64 new_por;
u64 old_por;

8
arch/powerpc/include/asm/pkeys.h
View File

@ -143,10 +143,8 @@ static inline int arch_override_mprotect_pkey(struct vm_area_struct *vma,
return __arch_override_mprotect_pkey(vma, prot, pkey);
}
extern int __arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
unsigned long init_val);
static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
unsigned long init_val)
extern int __arch_set_user_pkey_access(int pkey, unsigned long init_val);
static inline int arch_set_user_pkey_access(int pkey, unsigned long init_val)
{
if (!mmu_has_feature(MMU_FTR_PKEY))
return -EINVAL;
@ -160,7 +158,7 @@ static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
if (pkey == 0)
return init_val ? -EINVAL : 0;
return __arch_set_user_pkey_access(tsk, pkey, init_val);
return __arch_set_user_pkey_access(pkey, init_val);
}
static inline bool arch_pkeys_enabled(void)

3
arch/powerpc/mm/book3s64/pkeys.c
View File

@ -335,8 +335,7 @@ static inline void init_iamr(int pkey, u8 init_bits)
* Set the access rights in AMR IAMR and UAMOR registers for @pkey to that
* specified in @init_val.
*/
int __arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
unsigned long init_val)
int __arch_set_user_pkey_access(int pkey, unsigned long init_val)
{
u64 new_amr_bits = 0x0ul;
u64 new_iamr_bits = 0x0ul;

3
arch/x86/include/asm/pkeys.h
View File

@ -9,8 +9,7 @@
*/
#define arch_max_pkey() (cpu_feature_enabled(X86_FEATURE_OSPKE) ? 16 : 1)
extern int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
unsigned long init_val);
extern int arch_set_user_pkey_access(int pkey, unsigned long init_val);
static inline bool arch_pkeys_enabled(void)
{

3
arch/x86/kernel/fpu/xstate.c
View File

@ -1080,8 +1080,7 @@ void __user *get_xsave_addr_user(struct xregs_state __user *xsave, int xfeature_
* This will go out and modify PKRU register to set the access
* rights for @pkey to @init_val.
*/
int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
unsigned long init_val)
int arch_set_user_pkey_access(int pkey, unsigned long init_val)
{
u32 old_pkru, new_pkru_bits = 0;
int pkey_shift;

3
arch/x86/mm/pkeys.c
View File

@ -42,8 +42,7 @@ int __execute_only_pkey(struct mm_struct *mm)
* Set up PKRU so that it denies access for everything
* other than execution.
*/
ret = arch_set_user_pkey_access(current, execute_only_pkey,
PKEY_DISABLE_ACCESS);
ret = arch_set_user_pkey_access(execute_only_pkey, PKEY_DISABLE_ACCESS);
/*
* If the PKRU-set operation failed somehow, just return
* 0 and effectively disable execute-only support.

2
mm/mprotect.c
View File

@ -978,7 +978,7 @@ SYSCALL_DEFINE2(pkey_alloc, unsigned long, flags, unsigned long, init_val)
if (pkey == -1)
goto out;
ret = arch_set_user_pkey_access(current, pkey, init_val);
ret = arch_set_user_pkey_access(pkey, init_val);
if (ret) {
mm_pkey_free(current->mm, pkey);
goto out;