From: Mark Rutland Date: Tue, 7 Apr 2026 13:16:47 +0000 (+0100) Subject: arm64: entry: Consistently prefix arm64-specific wrappers X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6879ef130223f015c9a5a8a0d14d3f6d0464fa21;p=thirdparty%2Fkernel%2Flinux.git arm64: entry: Consistently prefix arm64-specific wrappers For historical reasons, arm64's entry code has arm64-specific functions named enter_from_kernel_mode() and exit_to_kernel_mode(), which are wrappers for similarly-named functions from the generic irqentry code. Other arm64-specific wrappers have an 'arm64_' prefix to clearly distinguish them from their generic counterparts, e.g. arm64_enter_from_user_mode() and arm64_exit_to_user_mode(). For consistency and clarity, add an 'arm64_' prefix to these functions. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland Cc: Andy Lutomirski Cc: Jinjie Ruan Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Vladimir Murzin Cc: Will Deacon Reviewed-by: Jinjie Ruan Acked-by: Peter Zijlstra (Intel) Signed-off-by: Catalin Marinas --- diff --git a/arch/arm64/kernel/entry-common.c b/arch/arm64/kernel/entry-common.c index 3625797e9ee8f..3d01cdacdc7a2 100644 --- a/arch/arm64/kernel/entry-common.c +++ b/arch/arm64/kernel/entry-common.c @@ -35,7 +35,7 @@ * Before this function is called it is not safe to call regular kernel code, * instrumentable code, or any code which may trigger an exception. */ -static noinstr irqentry_state_t enter_from_kernel_mode(struct pt_regs *regs) +static noinstr irqentry_state_t arm64_enter_from_kernel_mode(struct pt_regs *regs) { irqentry_state_t state; @@ -51,8 +51,8 @@ static noinstr irqentry_state_t enter_from_kernel_mode(struct pt_regs *regs) * After this function returns it is not safe to call regular kernel code, * instrumentable code, or any code which may trigger an exception. */ -static void noinstr exit_to_kernel_mode(struct pt_regs *regs, - irqentry_state_t state) +static void noinstr arm64_exit_to_kernel_mode(struct pt_regs *regs, + irqentry_state_t state) { mte_check_tfsr_exit(); irqentry_exit(regs, state); @@ -298,11 +298,11 @@ static void noinstr el1_abort(struct pt_regs *regs, unsigned long esr) unsigned long far = read_sysreg(far_el1); irqentry_state_t state; - state = enter_from_kernel_mode(regs); + state = arm64_enter_from_kernel_mode(regs); local_daif_inherit(regs); do_mem_abort(far, esr, regs); local_daif_mask(); - exit_to_kernel_mode(regs, state); + arm64_exit_to_kernel_mode(regs, state); } static void noinstr el1_pc(struct pt_regs *regs, unsigned long esr) @@ -310,55 +310,55 @@ static void noinstr el1_pc(struct pt_regs *regs, unsigned long esr) unsigned long far = read_sysreg(far_el1); irqentry_state_t state; - state = enter_from_kernel_mode(regs); + state = arm64_enter_from_kernel_mode(regs); local_daif_inherit(regs); do_sp_pc_abort(far, esr, regs); local_daif_mask(); - exit_to_kernel_mode(regs, state); + arm64_exit_to_kernel_mode(regs, state); } static void noinstr el1_undef(struct pt_regs *regs, unsigned long esr) { irqentry_state_t state; - state = enter_from_kernel_mode(regs); + state = arm64_enter_from_kernel_mode(regs); local_daif_inherit(regs); do_el1_undef(regs, esr); local_daif_mask(); - exit_to_kernel_mode(regs, state); + arm64_exit_to_kernel_mode(regs, state); } static void noinstr el1_bti(struct pt_regs *regs, unsigned long esr) { irqentry_state_t state; - state = enter_from_kernel_mode(regs); + state = arm64_enter_from_kernel_mode(regs); local_daif_inherit(regs); do_el1_bti(regs, esr); local_daif_mask(); - exit_to_kernel_mode(regs, state); + arm64_exit_to_kernel_mode(regs, state); } static void noinstr el1_gcs(struct pt_regs *regs, unsigned long esr) { irqentry_state_t state; - state = enter_from_kernel_mode(regs); + state = arm64_enter_from_kernel_mode(regs); local_daif_inherit(regs); do_el1_gcs(regs, esr); local_daif_mask(); - exit_to_kernel_mode(regs, state); + arm64_exit_to_kernel_mode(regs, state); } static void noinstr el1_mops(struct pt_regs *regs, unsigned long esr) { irqentry_state_t state; - state = enter_from_kernel_mode(regs); + state = arm64_enter_from_kernel_mode(regs); local_daif_inherit(regs); do_el1_mops(regs, esr); local_daif_mask(); - exit_to_kernel_mode(regs, state); + arm64_exit_to_kernel_mode(regs, state); } static void noinstr el1_breakpt(struct pt_regs *regs, unsigned long esr) @@ -420,11 +420,11 @@ static void noinstr el1_fpac(struct pt_regs *regs, unsigned long esr) { irqentry_state_t state; - state = enter_from_kernel_mode(regs); + state = arm64_enter_from_kernel_mode(regs); local_daif_inherit(regs); do_el1_fpac(regs, esr); local_daif_mask(); - exit_to_kernel_mode(regs, state); + arm64_exit_to_kernel_mode(regs, state); } asmlinkage void noinstr el1h_64_sync_handler(struct pt_regs *regs) @@ -491,13 +491,13 @@ static __always_inline void __el1_irq(struct pt_regs *regs, { irqentry_state_t state; - state = enter_from_kernel_mode(regs); + state = arm64_enter_from_kernel_mode(regs); irq_enter_rcu(); do_interrupt_handler(regs, handler); irq_exit_rcu(); - exit_to_kernel_mode(regs, state); + arm64_exit_to_kernel_mode(regs, state); } static void noinstr el1_interrupt(struct pt_regs *regs, void (*handler)(struct pt_regs *))