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

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Message-ID: <20230923162547.GN3303@kernel.org>
Date: Sat, 23 Sep 2023 19:25:47 +0300
From: Mike Rapoport <rppt@...nel.org>
To: Song Liu <song@...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 Thu, Sep 21, 2023 at 03:30:46PM -0700, Song Liu wrote:
> 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, this should have been

	execmem_params.ranges[EXECMEM_KPROBES].start = range->start;
	execmem_params.ranges[EXECMEM_KPROBES].end = range->end;

where range points to the same range as EXECMEM_MODULE_TEXT.

 
> 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
> >
> >

-- 
Sincerely yours,
Mike.