On Mon, May 24, 2021 at 12:22 PM <guoren@xxxxxxxxxx> wrote: > > From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> > > Kernel virtual address translation should avoid care asid or it'll > cause more TLB-miss and TLB-refill. Because the current asid in satp > belongs to the current process, but the target kernel va TLB entry's > asid still belongs to the previous process. > > Signed-off-by: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> > Cc: Anup Patel <anup.patel@xxxxxxx> > Cc: Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx> First of all thanks for doing this series, I had similar changes in mind as follow-up to the ASID allocator. I went through all three patches and at least I don't see any obvious issue but I think we should try testing it more on a few existing platforms. Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx> Regards, Anup > --- > arch/riscv/include/asm/pgtable.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h > index 78f2323..017da15 100644 > --- a/arch/riscv/include/asm/pgtable.h > +++ b/arch/riscv/include/asm/pgtable.h > @@ -135,6 +135,7 @@ > | _PAGE_PRESENT \ > | _PAGE_ACCESSED \ > | _PAGE_DIRTY \ > + | _PAGE_GLOBAL \ > | _PAGE_CACHE) > > #define PAGE_KERNEL __pgprot(_PAGE_KERNEL) > -- > 2.7.4 >
