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riscv: mm: Fix prototype to avoid discarding const

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BugLink: https://bugs.launchpad.net/bugs/2065400

[ Upstream commit 674bc0168e6b68070c75df22e97ab63b6eb60d89 ]

__flush_tlb_range() does not modify the provided cpumask, so its cmask
parameter can be pointer-to-const. This avoids the unsafe cast of
cpu_online_mask.

Fixes: 54d7431af7 ("riscv: Add support for BATCHED_UNMAP_TLB_FLUSH")
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240301201837.2826172-1-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Samuel Holland
2024-03-01 12:18:32 -08:00
committed by Stefan Bader
parent aa68b6faa7
commit ab2a80b6a9
1 changed files with 2 additions and 2 deletions
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arch/riscv/mm/tlbflush.c
+2 -2
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@@ -99,7 +99,7 @@ static void __ipi_flush_tlb_range_asid(void *info)
local_flush_tlb_range_asid(d->start, d->size, d->stride, d->asid);
}
static void __flush_tlb_range(struct cpumask *cmask, unsigned long asid,
static void __flush_tlb_range(const struct cpumask *cmask, unsigned long asid,
unsigned long start, unsigned long size,
unsigned long stride)
{
@@ -200,7 +200,7 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
void flush_tlb_kernel_range(unsigned long start, unsigned long end)
{
__flush_tlb_range((struct cpumask *)cpu_online_mask, FLUSH_TLB_NO_ASID,
__flush_tlb_range(cpu_online_mask, FLUSH_TLB_NO_ASID,
start, end - start, PAGE_SIZE);
}