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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Guenter Roeck <linux@roeck-us.net>
Cc: Richard Henderson <rth@twiddle.net>,
	Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
	Matt Turner <mattst88@gmail.com>,
	"James E . J . Bottomley" <James.Bottomley@hansenpartnership.com>,
	Helge Deller <deller@gmx.de>,
	"David S . Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	alpha <linux-alpha@vger.kernel.org>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-parisc@vger.kernel.org, Netdev <netdev@vger.kernel.org>,
	Sparse Mailing-list <linux-sparse@vger.kernel.org>
Subject: Re: [PATCH v2 0/4] Introduce and use absolute_pointer macro
Date: Wed, 15 Sep 2021 12:18:58 -0700	[thread overview]
Message-ID: <CAHk-=wjXr+NnNPTorhaW81eAbdF90foVo-5pQqRmXZi-ZGaX6Q@mail.gmail.com> (raw)
In-Reply-To: <20210915035227.630204-1-linux@roeck-us.net>

On Tue, Sep 14, 2021 at 8:52 PM Guenter Roeck <linux@roeck-us.net> wrote:
>
> This patch series introduces absolute_pointer() to fix the problem.
> absolute_pointer() disassociates a pointer from its originating symbol
> type and context, and thus prevents gcc from making assumptions about
> pointers passed to memory operations.

Ok, I've applied this to my tree.

I note that the physical BOOT_PCB addresses in the alpha setup.h file
might be useful for things like MILO in user space, but since I
couldn't even find MILO sources any more, I couldn't really check.

I suspect alpha is basically on life support and presumably nobody
would ever compile a bootloader anyway, so it's unlikely to matter.

If somebody does find any issues, we'll know better and we can ask
where the user space sources are that might use that alpha setup.h
file.

                Linus

  parent reply	other threads:[~2021-09-15 19:19 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-15  3:52 [PATCH v2 0/4] Introduce and use absolute_pointer macro Guenter Roeck
2021-09-15  3:52 ` [PATCH v2 1/4] compiler.h: Introduce " Guenter Roeck
2021-09-15  7:07   ` Geert Uytterhoeven
2021-09-15  7:13   ` Geert Uytterhoeven
2021-09-15  7:13     ` Geert Uytterhoeven
2021-09-15 14:03     ` Guenter Roeck
2021-09-15 14:03       ` Guenter Roeck
2021-09-15  3:52 ` [PATCH v2 2/4] net: i825xx: Use absolute_pointer for memcpy from fixed memory location Guenter Roeck
2021-09-15  7:08   ` Geert Uytterhoeven
2021-09-15  3:52 ` [PATCH v2 3/4] alpha: Move setup.h out of uapi Guenter Roeck
2021-09-15  3:52 ` [PATCH v2 4/4] alpha: Use absolute_pointer to define COMMAND_LINE Guenter Roeck
2021-09-15 19:18 ` Linus Torvalds [this message]
2021-09-15 19:35   ` [PATCH v2 0/4] Introduce and use absolute_pointer macro Guenter Roeck
2021-09-15 19:47     ` Linus Torvalds
2021-09-15 19:50       ` Linus Torvalds
2021-09-15 21:19         ` Linus Torvalds
2021-09-16  7:02           ` Anders Larsen
2021-09-16 16:25             ` Linus Torvalds
2021-09-15 20:30       ` Helge Deller
2021-09-15 22:33       ` Guenter Roeck
2021-09-16 18:35         ` Linus Torvalds
2021-09-18  9:51           ` Michael Cree
2021-09-18 13:11             ` Ulrich Teichert
2021-09-18 13:11               ` Ulrich Teichert
2021-09-18 17:04               ` Linus Torvalds
2021-09-18 17:17                 ` Thorsten Glaser
2021-09-18 17:21                   ` Linus Torvalds
2021-09-18 17:28                 ` Linus Torvalds
2021-09-18 20:26                 ` Ulrich Teichert
2021-09-18 20:26                   ` Ulrich Teichert
2021-09-18 20:46                   ` Linus Torvalds
2021-09-18 21:12                     ` Linus Torvalds
2021-09-18 22:09                   ` Linus Torvalds
2021-09-19 15:13                     ` Dave Taht
2021-09-19 15:13                       ` Dave Taht
2021-09-20 18:25                     ` Ulrich Teichert
2021-09-20 18:25                       ` Ulrich Teichert
2021-09-20 18:46                       ` Linus Torvalds
2021-09-20 18:59                         ` Matt Turner
2021-09-20 19:45                           ` Linus Torvalds
2021-09-21 19:13                         ` Ulrich Teichert
2021-09-21 19:13                           ` Ulrich Teichert
2021-09-21 20:42                           ` Linus Torvalds
2021-09-21 21:39                           ` Linus Torvalds
2021-09-22 20:50                             ` Ulrich Teichert
2021-09-22 20:50                               ` Ulrich Teichert
2021-09-23 19:57                               ` Newer kernels on the Jensen (was: [PATCH v2 0/4] Introduce and use absolute_pointer macro) Ulrich Teichert
2021-09-25 21:01                                 ` John Paul Adrian Glaubitz
2021-09-26 11:26                                   ` Newer kernels on the Jensen (was: [PATCH v2 0/4] Introduce and Ulrich Teichert
2021-09-26 11:35                                     ` John Paul Adrian Glaubitz
2021-09-26 11:55                                       ` John Paul Adrian Glaubitz
2021-09-26 17:12                                         ` Ulrich Teichert
2021-09-26 17:16                                           ` John Paul Adrian Glaubitz
2021-10-02 15:30                                             ` John Paul Adrian Glaubitz
2021-10-18 15:37                                     ` John Paul Adrian Glaubitz
2021-10-19 19:46                                       ` Ulrich Teichert
2021-10-22  8:46                                         ` John Paul Adrian Glaubitz
2021-10-24  3:41                                           ` Maciej W. Rozycki
2021-09-16 19:47         ` [PATCH v2 0/4] Introduce and use absolute_pointer macro Linus Torvalds
2021-09-16  0:34   ` Michael Cree

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