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Donenfeld" , Christophe Leroy , Michael Ellerman , Nicholas Piggin , Naveen N Rao , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Theodore Ts'o , Andrew Morton , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers Subject: Re: [PATCH v3 2/2] vdso: Introduce vdso/page.h In-Reply-To: <423e571b-3ef6-4e80-ba81-bf42589a4ba8@app.fastmail.com> References: <20241003152910.3287259-1-vincenzo.frascino@arm.com> <20241003152910.3287259-3-vincenzo.frascino@arm.com> <423e571b-3ef6-4e80-ba81-bf42589a4ba8@app.fastmail.com> Date: Mon, 07 Oct 2024 18:23:23 +0200 Message-ID: <87ldyzubk4.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-Rspam-User: X-Stat-Signature: 7eohh9qb7o8zzz4bptu76fngj1xien3p X-Rspamd-Queue-Id: 5CE6114000B X-Rspamd-Server: rspam11 X-HE-Tag: 1728318207-620823 X-HE-Meta: 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 18wveElx gslZpjSa+vC7i7yxELlshg3q2V10qAgguH7drfIFohcb9R7AC4ei9NZrhzcQ4u0+BTKWXR3GrIqOnaRE/7DH+W1YCpuPaNdzFN7KsqvZ+yvAA95p9C5bLZrROHnaMPhlljsVpts5GrjIpRWi2X5DmbWo/cO64ATnNSwKFONHy2dmJ09aT8RIM4DlBcF4uQJXNSKMX27tQ/+IoBbmm4xv/hmYBpZ2t8H+My7U98K8jEcFUsxKmHykfVUKKD/DosayQe9/5X76ceQaGSxb7dc81WD8Yfuz3w9oPUmAkQzBKpAkgJEo= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Oct 04 2024 at 13:13, Arnd Bergmann wrote: > On Thu, Oct 3, 2024, at 15:29, Vincenzo Frascino wrote: >> The VDSO implementation includes headers from outside of the >> vdso/ namespace. >> >> Introduce vdso/page.h to make sure that the generic library >> uses only the allowed namespace. >> >> Note: on a 32-bit architecture UL is an unsigned 32 bit long. Hence when >> it supports 64-bit phys_addr_t we might end up in situation in which the >> top 32 bit are cleared. To prevent this issue this patch provides >> separate macros for PAGE_MASK. >> >> Cc: Arnd Bergmann >> Cc: Andy Lutomirski >> Cc: Thomas Gleixner >> Cc: Jason A. Donenfeld >> Signed-off-by: Vincenzo Frascino > > Looks good to me. I would apply this to the asm-generic > tree for 6.13, but there is one small detail I'm unsure > about: Please don't. We have related changes upcoming for VDSO which would heavily conflict. I rather take it through my tree. Thanks, tglx