linux-kernel - Re: [PATCH v3 09/13] powerpc: extend execmem

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Message-ID: <CAPhsuW5Vg7yDn8zb5ez4JY4efoQ6aW+vYm9OL+Xr0NJnLfMYHg@mail.gmail.com>
Date:   Thu, 21 Sep 2023 15:30:46 -0700
From:   Song Liu <song@...nel.org>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Björn Töpel <bjorn@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        "David S. Miller" <davem@...emloft.net>,
        Dinh Nguyen <dinguyen@...nel.org>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Helge Deller <deller@....de>,
        Huacai Chen <chenhuacai@...nel.org>,
        Kent Overstreet <kent.overstreet@...ux.dev>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Nadav Amit <nadav.amit@...il.com>,
        "Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Puranjay Mohan <puranjay12@...il.com>,
        Rick Edgecombe <rick.p.edgecombe@...el.com>,
        Russell King <linux@...linux.org.uk>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Will Deacon <will@...nel.org>, bpf@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-mips@...r.kernel.org,
        linux-mm@...ck.org, linux-modules@...r.kernel.org,
        linux-parisc@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-s390@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, loongarch@...ts.linux.dev,
        netdev@...r.kernel.org, sparclinux@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH v3 09/13] powerpc: extend execmem_params for kprobes allocations

On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport <rppt@...nel.org> wrote:
>
[...]
> @@ -135,5 +138,13 @@ struct execmem_params __init *execmem_arch_params(void)
>
>         range->pgprot = prot;
>
> +       execmem_params.ranges[EXECMEM_KPROBES].start = VMALLOC_START;
> +       execmem_params.ranges[EXECMEM_KPROBES].start = VMALLOC_END;

.end = VMALLOC_END.

Thanks,
Song

> +
> +       if (strict_module_rwx_enabled())
> +               execmem_params.ranges[EXECMEM_KPROBES].pgprot = PAGE_KERNEL_ROX;
> +       else
> +               execmem_params.ranges[EXECMEM_KPROBES].pgprot = PAGE_KERNEL_EXEC;
> +
>         return &execmem_params;
>  }
> --
> 2.39.2
>
>