linux-kernel - Re: [PATCH v2 2/8] execmem: introduce execmem_alloc

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Message-ID: <0d6bcd81-3b27-414f-a626-350cba268c92@suse.com>
Date: Thu, 10 Jul 2025 15:25:14 +0200
From: Petr Pavlu <petr.pavlu@...e.com>
To: Mike Rapoport <rppt@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
 Andy Lutomirski <luto@...nel.org>, Borislav Petkov <bp@...en8.de>,
 Christophe Leroy <christophe.leroy@...roup.eu>,
 Daniel Gomez <da.gomez@...sung.com>,
 Dave Hansen <dave.hansen@...ux.intel.com>, Ingo Molnar <mingo@...hat.com>,
 "Liam R. Howlett" <Liam.Howlett@...cle.com>,
 Luis Chamberlain <mcgrof@...nel.org>, Mark Rutland <mark.rutland@....com>,
 Masami Hiramatsu <mhiramat@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
 Peter Zijlstra <peterz@...radead.org>,
 Sami Tolvanen <samitolvanen@...gle.com>, Steven Rostedt
 <rostedt@...dmis.org>, Thomas Gleixner <tglx@...utronix.de>,
 Yann Ylavic <ylavic.dev@...il.com>, linux-kernel@...r.kernel.org,
 linux-mm@...ck.org, linux-modules@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH v2 2/8] execmem: introduce execmem_alloc_rw()

On 7/9/25 3:49 PM, Mike Rapoport wrote:
> From: "Mike Rapoport (Microsoft)" <rppt@...nel.org>
> 
> Some callers of execmem_alloc() require the memory to be temporarily
> writable even when it is allocated from ROX cache. These callers use
> execemem_make_temp_rw() right after the call to execmem_alloc().
> 
> Wrap this sequence in execmem_alloc_rw() API.
> 
> Signed-off-by: Mike Rapoport (Microsoft) <rppt@...nel.org>

Reviewed-by: Petr Pavlu <petr.pavlu@...e.com>

> @@ -165,6 +149,28 @@ struct execmem_info *execmem_arch_setup(void);
>   */
>  void *execmem_alloc(enum execmem_type type, size_t size);
>  
> +/**
> + * execmem_alloc_rw - allocate writatble executable memory

Nit: writatble -> writable.

-- 
Thanks,
Petr