From: Dmitry Safonov <0x7f454c46@gmail.com>
To: Andy Lutomirski <luto@kernel.org>, Dmitry Safonov <dima@arista.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>,
Arnd Bergmann <arnd@arndb.de>, Borislav Petkov <bp@alien8.de>,
Catalin Marinas <catalin.marinas@arm.com>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Guo Ren <guoren@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
Ingo Molnar <mingo@redhat.com>, Oleg Nesterov <oleg@redhat.com>,
Russell King <linux@armlinux.org.uk>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Thomas Gleixner <tglx@linutronix.de>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Will Deacon <will@kernel.org>, X86 ML <x86@kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
Albert Ou <aou@eecs.berkeley.edu>,
"David S. Miller" <davem@davemloft.net>,
Palmer Dabbelt <palmer@dabbelt.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Linux FS Devel <linux-fsdevel@vger.kernel.org>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
linux-s390 <linux-s390@vger.kernel.org>,
sparclinux <sparclinux@vger.kernel.org>,
"open list:MIPS" <linux-mips@vger.kernel.org>
Subject: Re: [PATCH 00/19] Add generic user_landing tracking
Date: Mon, 9 Nov 2020 01:27:27 +0000 [thread overview]
Message-ID: <9f416ebd-2535-1b57-7033-e1755e906743@gmail.com> (raw)
In-Reply-To: <CALCETrW-hHyh3nF3ATmy61PCy1iFqVhVYX+-ptBCMP5Bf7aJ0w@mail.gmail.com>
On 11/8/20 7:07 PM, Andy Lutomirski wrote:
> On Sat, Nov 7, 2020 at 9:17 PM Dmitry Safonov <dima@arista.com> wrote:
>>
>> Started from discussion [1], where was noted that currently a couple of
>> architectures support mremap() for vdso/sigpage, but not munmap().
>> If an application maps something on the ex-place of vdso/sigpage,
>> later after processing signal it will land there (good luck!)
>>
>> Patches set is based on linux-next (next-20201106) and it depends on
>> changes in x86/cleanups (those reclaim TIF_IA32/TIF_X32) and also
>> on my changes in akpm (fixing several mremap() issues).
>>
>> Logically, the patches set divides on:
>> - patch 1: cleanup for patches in x86/cleanups
>> - patches 2-11: cleanups for arch_setup_additional_pages()
>
> I like these cleanups, although I think you should stop using terms
> like "new-born". A task being exec'd is not newborn at all -- it's in
> the middle of a transformation.
Thank you for looking at them, Andy :-)
Yeah, somehow I thought about new-execed process as a new-born binary.
I'll try to improve changelogs in v2.
Thanks,
Dmitry
prev parent reply other threads:[~2020-11-09 1:27 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-08 5:17 [PATCH 00/19] Add generic user_landing tracking Dmitry Safonov
2020-11-08 5:17 ` [PATCH 01/19] x86/elf: Check in_x32_syscall() in compat_arch_setup_additional_pages() Dmitry Safonov
2020-11-08 5:17 ` [PATCH 02/19] elf: Move arch_setup_additional_pages() to generic elf.h Dmitry Safonov
2020-11-13 6:58 ` kernel test robot
2020-11-13 7:01 ` kernel test robot
2020-11-08 5:17 ` [PATCH 03/19] arm64: Use in_compat_task() in arch_setup_additional_pages() Dmitry Safonov
2020-11-08 5:17 ` [PATCH 04/19] x86: Remove compat_arch_setup_additional_pages() Dmitry Safonov
2020-11-08 5:17 ` [PATCH 05/19] elf: " Dmitry Safonov
2020-11-08 5:17 ` [PATCH 06/19] elf/vdso: Reuse arch_setup_additional_pages() parameters Dmitry Safonov
2020-11-13 6:57 ` kernel test robot
2020-11-13 8:04 ` kernel test robot
2020-11-08 5:17 ` [PATCH 07/19] elf: Use sysinfo_ehdr in ARCH_DLINFO() Dmitry Safonov
2020-11-08 5:17 ` [PATCH 08/19] arm/vdso: Remove vdso pointer from mm->context Dmitry Safonov
2020-11-08 5:17 ` [PATCH 09/19] s390/vdso: Remove vdso_base " Dmitry Safonov
2020-11-08 5:17 ` [PATCH 10/19] sparc/vdso: Remove vdso " Dmitry Safonov
2020-11-08 5:17 ` [PATCH 11/19] mm/mmap: Make vm_special_mapping::mremap return void Dmitry Safonov
2020-11-08 5:17 ` [PATCH 12/19] x86/signal: Land on &frame->retcode when vdso isn't mapped Dmitry Safonov
2020-11-08 19:06 ` Andy Lutomirski
2020-11-09 1:22 ` Dmitry Safonov
2020-11-08 5:17 ` [PATCH 13/19] x86/signal: Check if vdso_image_32 is mapped before trying to land on it Dmitry Safonov
2020-11-08 5:17 ` [PATCH 14/19] mm: Add user_landing in mm_struct Dmitry Safonov
2020-11-08 19:04 ` Andy Lutomirski
2020-11-09 1:25 ` Dmitry Safonov
2020-11-08 5:17 ` [PATCH 15/19] x86/vdso: Migrate to user_landing Dmitry Safonov
2020-11-08 5:17 ` [PATCH 16/19] arm/vdso: " Dmitry Safonov
2020-11-08 5:17 ` [PATCH 17/19] arm64/vdso: Migrate compat signals " Dmitry Safonov
2020-11-08 5:17 ` [PATCH 18/19] arm64/vdso: Migrate native " Dmitry Safonov
2020-11-08 5:17 ` [PATCH 19/19] mips/vdso: Migrate " Dmitry Safonov
2020-11-13 9:58 ` kernel test robot
2020-11-08 19:07 ` [PATCH 00/19] Add generic user_landing tracking Andy Lutomirski
2020-11-09 1:27 ` Dmitry Safonov [this message]
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