netdev - 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
>
>