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x86/mm: delete unused cpu argument to leave_mm()

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The argument is unused since commit 3d28ebceaf ("x86/mm: Rework lazy
TLB to track the actual loaded mm"), delete it.

Link: https://lkml.kernel.org/r/20240126080644.1714297-1-yosryahmed@google.com
Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Yosry Ahmed 2024-01-26 08:06:43 +00:00 committed by Andrew Morton
parent 5cec4eb7fa
commit 7dbbc8f57d
6 changed files with 6 additions and 6 deletions
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2
arch/x86/include/asm/mmu.h
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@ -75,7 +75,7 @@ typedef struct {
.lock = __MUTEX_INITIALIZER(mm.context.lock), \
}
void leave_mm(int cpu);
void leave_mm(void);
#define leave_mm leave_mm
#endif /* _ASM_X86_MMU_H */

2
arch/x86/kernel/alternative.c
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@ -1805,7 +1805,7 @@ static inline temp_mm_state_t use_temporary_mm(struct mm_struct *mm)
* restoring the previous mm.
*/
if (this_cpu_read(cpu_tlbstate_shared.is_lazy))
leave_mm(smp_processor_id());
leave_mm();
temp_state.mm = this_cpu_read(cpu_tlbstate.loaded_mm);
switch_mm_irqs_off(NULL, mm, current);

2
arch/x86/mm/tlb.c
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@ -299,7 +299,7 @@ static void load_new_mm_cr3(pgd_t *pgdir, u16 new_asid, unsigned long lam,
write_cr3(new_mm_cr3);
}
void leave_mm(int cpu)
void leave_mm(void)
{
struct mm_struct *loaded_mm = this_cpu_read(cpu_tlbstate.loaded_mm);

2
arch/x86/xen/mmu_pv.c
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@ -913,7 +913,7 @@ static void drop_mm_ref_this_cpu(void *info)
struct mm_struct *mm = info;
if (this_cpu_read(cpu_tlbstate.loaded_mm) == mm)
leave_mm(smp_processor_id());
leave_mm();
/*
* If this cpu still has a stale cr3 reference, then make sure

2
drivers/cpuidle/cpuidle.c
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@ -237,7 +237,7 @@ noinstr int cpuidle_enter_state(struct cpuidle_device *dev,
}
if (target_state->flags & CPUIDLE_FLAG_TLB_FLUSHED)
leave_mm(dev->cpu);
leave_mm();
/* Take note of the planned idle state. */
sched_idle_set_state(target_state);

2
include/linux/mmu_context.h
View File

@ -11,7 +11,7 @@
#endif
#ifndef leave_mm
static inline void leave_mm(int cpu) { }
static inline void leave_mm(void) { }
#endif
/*