linux-kernel - Re: [PATCH -fixes] riscv: Fix PTDUMP output now BPF region moved back to module region

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Date:   Fri, 25 Jun 2021 21:31:04 +0800
From:   Jisheng Zhang <jszhang3@...l.ustc.edu.cn>
To:     Alexandre Ghiti <alex@...ti.fr>
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Jisheng Zhang <jszhang@...nel.org>,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -fixes] riscv: Fix PTDUMP output now BPF region moved
 back to module region

On Thu, 24 Jun 2021 14:17:21 +0200
Alexandre Ghiti <alex@...ti.fr> wrote:

> BPF region was moved back to the region below the kernel at the end of the
> module region in commit 3a02764c372c ("riscv: Ensure BPF_JIT_REGION_START
> aligned with PMD size"), so reflect this change in kernel page table
> output.

Nice catch!

> 
> Signed-off-by: Alexandre Ghiti <alex@...ti.fr>

Reviewed-by: Jisheng Zhang <jszhang@...nel.org>

> ---
>  arch/riscv/mm/ptdump.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/riscv/mm/ptdump.c b/arch/riscv/mm/ptdump.c
> index 0536ac84b730..22d6555d89dc 100644
> --- a/arch/riscv/mm/ptdump.c
> +++ b/arch/riscv/mm/ptdump.c
> @@ -98,8 +98,8 @@ static struct addr_marker address_markers[] = {
>  	{0, "vmalloc() end"},
>  	{0, "Linear mapping"},
>  #ifdef CONFIG_64BIT
> -	{0, "Modules mapping"},
> -	{0, "Kernel mapping (kernel, BPF)"},
> +	{0, "Modules/BPF mapping"},
> +	{0, "Kernel mapping"},
>  #endif
>  	{-1, NULL},
>  };