linux_dsm_epyc7002/arch/riscv/mm/tlbflush.c
Christoph Hellwig 95594cb40c riscv: move the TLB flush logic out of line
The TLB flush logic is going to become more complex.  Start moving
it out of line.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
[paul.walmsley@sifive.com: fixed checkpatch whitespace warnings]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
2019-09-05 01:54:51 -07:00

36 lines
795 B
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/mm.h>
#include <linux/smp.h>
#include <asm/sbi.h>
void flush_tlb_all(void)
{
sbi_remote_sfence_vma(NULL, 0, -1);
}
static void __sbi_tlb_flush_range(struct cpumask *cmask, unsigned long start,
unsigned long size)
{
struct cpumask hmask;
riscv_cpuid_to_hartid_mask(cmask, &hmask);
sbi_remote_sfence_vma(hmask.bits, start, size);
}
void flush_tlb_mm(struct mm_struct *mm)
{
__sbi_tlb_flush_range(mm_cpumask(mm), 0, -1);
}
void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
{
__sbi_tlb_flush_range(mm_cpumask(vma->vm_mm), addr, PAGE_SIZE);
}
void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
__sbi_tlb_flush_range(mm_cpumask(vma->vm_mm), start, end - start);
}