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| author | Jakub Kicinski <kuba@kernel.org> | 2024-03-28 17:24:10 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-03-28 17:25:57 -0700 |
| commit | 5e47fbe5cefe5d25d1fa4481c1b9fbe602b4a69f (patch) | |
| tree | b86edc39098cca1d0e53e46dceec6ca856183642 /arch/riscv/include/asm/tlb.h | |
| parent | Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf... (diff) | |
| parent | Merge tag 'net-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netd... (diff) | |
| download | linux-5e47fbe5cefe5d25d1fa4481c1b9fbe602b4a69f.tar.gz linux-5e47fbe5cefe5d25d1fa4481c1b9fbe602b4a69f.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
No conflicts, or adjacent changes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch/riscv/include/asm/tlb.h')
| -rw-r--r-- | arch/riscv/include/asm/tlb.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/tlb.h b/arch/riscv/include/asm/tlb.h index 50b63b5c15bd..1f6c38420d8e 100644 --- a/arch/riscv/include/asm/tlb.h +++ b/arch/riscv/include/asm/tlb.h @@ -10,6 +10,24 @@ struct mmu_gather; static void tlb_flush(struct mmu_gather *tlb); +#ifdef CONFIG_MMU +#include <linux/swap.h> + +/* + * While riscv platforms with riscv_ipi_for_rfence as true require an IPI to + * perform TLB shootdown, some platforms with riscv_ipi_for_rfence as false use + * SBI to perform TLB shootdown. To keep software pagetable walkers safe in this + * case we switch to RCU based table free (MMU_GATHER_RCU_TABLE_FREE). See the + * comment below 'ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE' in include/asm-generic/tlb.h + * for more details. + */ +static inline void __tlb_remove_table(void *table) +{ + free_page_and_swap_cache(table); +} + +#endif /* CONFIG_MMU */ + #define tlb_flush tlb_flush #include <asm-generic/tlb.h> |