From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
Paul Mackerras <paulus@samba.org>, Zong Li <zong.li@sifive.com>,
Andi Kleen <ak@linux.intel.com>,
Paul Burton <paulburton@kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Vincent Whitchurch <vincent.whitchurch@axis.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Petr Mladek <pmladek@suse.com>, Brian Gerst <brgerst@gmail.com>,
Andy Lutomirski <luto@kernel.org>, Yonghong Song <yhs@fb.com>,
Thomas Gleixner <tglx@linutronix.de>,
Jiri Kosina <jkosina@suse.cz>, Anup Patel <anup.patel@wdc.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Philipp Rudo <prudo@linux.ibm.com>, Torsten Duwe <duwe@lst.de>,
Masami Hiramatsu <mhiramat@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Mark Rutland <mark.rutland@arm.com>,
"James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
Vincent Chen <deanbo422@gmail.com>,
"open list:S390" <linux-s390@vger.kernel.org>,
Joe Lawrence <joe.lawrence@redhat.com>,
Helge Deller <deller@gmx.de>,
John Fastabend <john.fastabend@gmail.com>,
Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Iurii Zaikin <yzaikin@google.com>,
Andrii Nakryiko <andriin@fb.com>,
Vasily Gorbik <gor@linux.ibm.com>,
"moderated list:ARM PORT" <linux-arm-kernel@lists.infradead.org>,
Daniel Axtens <dja@axtens.net>,
Damien Le Moal <damien.lemoal@wdc.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Alexei Starovoitov <ast@kernel.org>,
Atish Patra <atish.patra@wdc.com>, Will Deacon <will@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Masahiro Yamada <masahiroy@kernel.org>,
Nayna Jain <nayna@linux.ibm.com>,
Ley Foon Tan <ley.foon.tan@intel.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Dmitry Vyukov <dvyukov@google.com>,
Sami Tolvanen <samitolvanen@google.com>,
"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
Mao Han <han_mao@c-sky.com>, Marco Elver <elver@google.com>,
Steven Rostedt <rostedt@goodmis.org>,
Babu Moger <Babu.Moger@amd.com>, Borislav Petkov <bp@alien8.de>,
Greentime Hu <green.hu@gmail.com>,
Ben Dooks <ben-linux@fluff.org>, Guan Xuetao <gxt@pku.edu.cn>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
"open list:PARISC ARCHITECTURE" <linux-parisc@vger.kernel.org>,
Jessica Yu <jeyu@kernel.org>,
"open list:BPF JIT for MIPS \(32-BIT AND 64-BIT\)"
<bpf@vger.kernel.org>, "David S. Miller" <davem@davemloft.net>,
Thiago Jung Bauermann <bauerman@linux.ibm.com>,
Peter Zijlstra <peterz@infradead.org>,
"open list:SPARC + UltraSPARC \(sparc/sparc64\)"
<sparclinux@vger.kernel.org>,
Sandipan Das <sandipan@linux.ibm.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Amit Daniel Kachhap <amit.kachhap@arm.com>,
Tiezhu Yang <yangtiezhu@loongson.cn>,
Miroslav Benes <mbenes@suse.cz>, Jiri Olsa <jolsa@redhat.com>,
"open list:RISC-V ARCHITECTURE" <linux-riscv@lists.infradead.org>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Anders Roxell <anders.roxell@linaro.org>,
Sven Schnelle <svens@stackframe.org>,
"maintainer:X86 ARCHITECTURE \(32-BIT AND 64-BIT\)"
<x86@kernel.org>, Russell King <linux@armlinux.org.uk>,
Mike Rapoport <rppt@linux.ibm.com>,
Ingo Molnar <mingo@redhat.com>, Albert Ou <aou@eecs.berkeley.edu>,
"Paul E. McKenney" <paulmck@kernel.org>,
Josh Poimboeuf <jpoimboe@redhat.com>,
KP Singh <kpsingh@chromium.org>,
Gerald Schaefer <gerald.schaefer@de.ibm.com>,
Nick Hu <nickhu@andestech.com>,
"open list:BPF JIT for MIPS \(32-BIT AND 64-BIT\)"
<netdev@vger.kernel.org>,
"open list:MIPS" <linux-mips@vger.kernel.org>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
"open list:LINUX FOR POWERPC \(32-BIT AND 64-BIT\)"
<linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH 1/3] module: Rename module_alloc() to text_alloc() and move to kernel proper
Date: Tue, 14 Jul 2020 12:52:43 +0300 [thread overview]
Message-ID: <20200714095243.GB1442951@linux.intel.com> (raw)
In-Reply-To: <CAMj1kXGhZYxjZTP+_PGdBy4hZgdeeTNUkuaE_eQKwB4pPAYNXA@mail.gmail.com>
On Mon, Jul 13, 2020 at 10:49:48PM +0300, Ard Biesheuvel wrote:
> This patch suggests that there are other reasons why conflating
> allocation of module space and allocating text pages for other uses
> is a bad idea, but switching all users to text_alloc() is a step in
> the wrong direction. It would be better to stop using module_alloc()
> in core code except in the module loader, and have a generic
> text_alloc() that can be overridden by the arch if necessary. Note
> that x86 and s390 are the only architectures that use module_alloc()
> in ftrace code.
This series essentially does this: introduces text_alloc() and
text_memfree(), which have generic implementations in kernel/text.c.
Those can be overriddent by arch specific implementations.
What you think should be done differently than in my patch set?
/Jarkko
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
WARNING: multiple messages have this Message-ID (diff)
From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
Paul Mackerras <paulus@samba.org>, Zong Li <zong.li@sifive.com>,
Andi Kleen <ak@linux.intel.com>,
Paul Burton <paulburton@kernel.org>,
Vincent Whitchurch <vincent.whitchurch@axis.com>,
Petr Mladek <pmladek@suse.com>, Brian Gerst <brgerst@gmail.com>,
Andy Lutomirski <luto@kernel.org>, Yonghong Song <yhs@fb.com>,
Thomas Gleixner <tglx@linutronix.de>,
Jiri Kosina <jkosina@suse.cz>, Anup Patel <anup.patel@wdc.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Philipp Rudo <prudo@linux.ibm.com>, Torsten Duwe <duwe@lst.de>,
Masami Hiramatsu <mhiramat@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Mark Rutland <mark.rutland@arm.com>,
"James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
Vincent Chen <deanbo422@gmail.com>,
"open list:S390" <linux-s390@vger.kernel.org>,
Joe Lawrence <joe.lawrence@redhat.com>,
Helge Deller <deller@gmx.de>,
John Fastabend <john.fastabend@gmail.com>,
Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Iurii Zaikin <yzaikin@google.com>,
Andrii Nakryiko <andriin@fb.com>,
Vasily Gorbik <gor@linux.ibm.com>,
"moderated list:ARM PORT" <linux-arm-kernel@lists.infradead.org>,
Daniel Axtens <dja@axtens.net>,
Damien Le Moal <damien.lemoal@wdc.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Alexei Starovoitov <ast@kernel.org>,
Atish Patra <atish.patra@wdc.com>, Will Deacon <will@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Masahiro Yamada <masahiroy@kernel.org>,
Nayna Jain <nayna@linux.ibm.com>,
Ley Foon Tan <ley.foon.tan@intel.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Dmitry Vyukov <dvyukov@google.com>,
Sami Tolvanen <samitolvanen@google.com>,
"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
Mao Han <han_mao@c-sky.com>, Marco Elver <elver@google.com>,
Steven Rostedt <rostedt@goodmis.org>,
Babu Moger <Babu.Moger@amd.com>, Borislav Petkov <bp@alien8.de>,
Greentime Hu <green.hu@gmail.com>,
Ben Dooks <ben-linux@fluff.org>, Guan Xuetao <gxt@pku.edu.cn>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
"open list:PARISC ARCHITECTURE" <linux-parisc@vger.kernel.org>,
Jessica Yu <jeyu@kernel.org>,
"open list:BPF JIT for MIPS \(32-BIT AND 64-BIT\)"
<bpf@vger.kernel.org>, "David S. Miller" <davem@davemloft.net>,
Thiago Jung Bauermann <bauerman@linux.ibm.com>,
Peter Zijlstra <peterz@infradead.org>,
"open list:SPARC + UltraSPARC \(sparc/sparc64\)"
<sparclinux@vger.kernel.org>,
Sandipan Das <sandipan@linux.ibm.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Amit Daniel Kachhap <amit.kachhap@arm.com>,
Tiezhu Yang <yangtiezhu@loongson.cn>,
Miroslav Benes <mbenes@suse.cz>, Jiri Olsa <jolsa@redhat.com>,
"open list:RISC-V ARCHITECTURE" <linux-riscv@lists.infradead.org>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Anders Roxell <anders.roxell@linaro.org>,
Sven Schnelle <svens@stackframe.org>,
"maintainer:X86 ARCHITECTURE \(32-BIT AND 64-BIT\)"
<x86@kernel.org>, Russell King <linux@armlinux.org.uk>,
Mike Rapoport <rppt@linux.ibm.com>,
Ingo Molnar <mingo@redhat.com>, Albert Ou <aou@eecs.berkeley.edu>,
"Paul E. McKenney" <paulmck@kernel.org>,
Josh Poimboeuf <jpoimboe@redhat.com>,
KP Singh <kpsingh@chromium.org>,
Gerald Schaefer <gerald.schaefer@de.ibm.com>,
Nick Hu <nickhu@andestech.com>,
"open list:BPF JIT for MIPS \(32-BIT AND 64-BIT\)"
<netdev@vger.kernel.org>,
"open list:MIPS" <linux-mips@vger.kernel.org>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
"open list:LINUX FOR POWERPC \(32-BIT AND 64-BIT\)"
<linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH 1/3] module: Rename module_alloc() to text_alloc() and move to kernel proper
Date: Tue, 14 Jul 2020 12:52:43 +0300 [thread overview]
Message-ID: <20200714095243.GB1442951@linux.intel.com> (raw)
In-Reply-To: <CAMj1kXGhZYxjZTP+_PGdBy4hZgdeeTNUkuaE_eQKwB4pPAYNXA@mail.gmail.com>
On Mon, Jul 13, 2020 at 10:49:48PM +0300, Ard Biesheuvel wrote:
> This patch suggests that there are other reasons why conflating
> allocation of module space and allocating text pages for other uses
> is a bad idea, but switching all users to text_alloc() is a step in
> the wrong direction. It would be better to stop using module_alloc()
> in core code except in the module loader, and have a generic
> text_alloc() that can be overridden by the arch if necessary. Note
> that x86 and s390 are the only architectures that use module_alloc()
> in ftrace code.
This series essentially does this: introduces text_alloc() and
text_memfree(), which have generic implementations in kernel/text.c.
Those can be overriddent by arch specific implementations.
What you think should be done differently than in my patch set?
/Jarkko
next prev parent reply other threads:[~2020-07-14 9:53 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-13 18:19 [PATCH 1/3] module: Rename module_alloc() to text_alloc() and move to kernel proper Jarkko Sakkinen
2020-07-13 18:19 ` Jarkko Sakkinen
2020-07-13 18:19 ` [PATCH 2/3] module: Add lock_modules() and unlock_modules() Jarkko Sakkinen
2020-07-13 18:19 ` [PATCH 3/3] kprobes: Flag out CONFIG_MODULES dependent code Jarkko Sakkinen
2020-07-13 18:34 ` [PATCH 1/3] module: Rename module_alloc() to text_alloc() and move to kernel proper Russell King - ARM Linux admin
2020-07-13 18:34 ` Russell King - ARM Linux admin
2020-07-14 9:49 ` Jarkko Sakkinen
2020-07-14 9:49 ` Jarkko Sakkinen
2020-07-14 9:53 ` Russell King - ARM Linux admin
2020-07-14 9:53 ` Russell King - ARM Linux admin
2020-07-14 11:43 ` Jarkko Sakkinen
2020-07-14 11:43 ` Jarkko Sakkinen
2020-07-13 19:49 ` Ard Biesheuvel
2020-07-13 19:49 ` Ard Biesheuvel
2020-07-14 2:04 ` Steven Rostedt
2020-07-14 2:04 ` Steven Rostedt
2020-07-14 6:35 ` Ard Biesheuvel
2020-07-14 6:35 ` Ard Biesheuvel
2020-07-14 9:52 ` Jarkko Sakkinen [this message]
2020-07-14 9:52 ` Jarkko Sakkinen
2020-07-14 10:17 ` Ard Biesheuvel
2020-07-14 10:17 ` Ard Biesheuvel
2020-07-14 10:33 ` Russell King - ARM Linux admin
2020-07-14 10:33 ` Russell King - ARM Linux admin
2020-07-14 11:45 ` Peter Zijlstra
2020-07-14 11:45 ` Peter Zijlstra
2020-07-14 12:11 ` Jarkko Sakkinen
2020-07-14 12:11 ` Jarkko Sakkinen
2020-07-14 11:55 ` Jarkko Sakkinen
2020-07-14 11:55 ` Jarkko Sakkinen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200714095243.GB1442951@linux.intel.com \
--to=jarkko.sakkinen@linux.intel.com \
--cc=Babu.Moger@amd.com \
--cc=James.Bottomley@hansenpartnership.com \
--cc=ak@linux.intel.com \
--cc=akpm@linux-foundation.org \
--cc=amit.kachhap@arm.com \
--cc=anders.roxell@linaro.org \
--cc=andriin@fb.com \
--cc=anil.s.keshavamurthy@intel.com \
--cc=anup.patel@wdc.com \
--cc=aou@eecs.berkeley.edu \
--cc=ardb@kernel.org \
--cc=aryabinin@virtuozzo.com \
--cc=ast@kernel.org \
--cc=atish.patra@wdc.com \
--cc=bauerman@linux.ibm.com \
--cc=ben-linux@fluff.org \
--cc=benh@kernel.crashing.org \
--cc=borntraeger@de.ibm.com \
--cc=bp@alien8.de \
--cc=bpf@vger.kernel.org \
--cc=brgerst@gmail.com \
--cc=catalin.marinas@arm.com \
--cc=damien.lemoal@wdc.com \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=deanbo422@gmail.com \
--cc=deller@gmx.de \
--cc=dja@axtens.net \
--cc=duwe@lst.de \
--cc=dvyukov@google.com \
--cc=elver@google.com \
--cc=gerald.schaefer@de.ibm.com \
--cc=gor@linux.ibm.com \
--cc=green.hu@gmail.com \
--cc=gxt@pku.edu.cn \
--cc=han_mao@c-sky.com \
--cc=heiko.carstens@de.ibm.com \
--cc=hpa@zytor.com \
--cc=jeyu@kernel.org \
--cc=jkosina@suse.cz \
--cc=joe.lawrence@redhat.com \
--cc=john.fastabend@gmail.com \
--cc=jolsa@redhat.com \
--cc=jpoimboe@redhat.com \
--cc=kafai@fb.com \
--cc=kpsingh@chromium.org \
--cc=ley.foon.tan@intel.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@vger.kernel.org \
--cc=linux-parisc@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=linux-s390@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=luto@kernel.org \
--cc=mark.rutland@arm.com \
--cc=masahiroy@kernel.org \
--cc=mbenes@suse.cz \
--cc=mhiramat@kernel.org \
--cc=mingo@redhat.com \
--cc=mpe@ellerman.id.au \
--cc=naveen.n.rao@linux.ibm.com \
--cc=nayna@linux.ibm.com \
--cc=netdev@vger.kernel.org \
--cc=nickhu@andestech.com \
--cc=oberpar@linux.ibm.com \
--cc=palmer@dabbelt.com \
--cc=paul.walmsley@sifive.com \
--cc=paulburton@kernel.org \
--cc=paulmck@kernel.org \
--cc=paulus@samba.org \
--cc=peterz@infradead.org \
--cc=pmladek@suse.com \
--cc=prudo@linux.ibm.com \
--cc=rostedt@goodmis.org \
--cc=rppt@linux.ibm.com \
--cc=samitolvanen@google.com \
--cc=sandipan@linux.ibm.com \
--cc=sean.j.christopherson@intel.com \
--cc=sergey.senozhatsky@gmail.com \
--cc=songliubraving@fb.com \
--cc=sparclinux@vger.kernel.org \
--cc=svens@stackframe.org \
--cc=tglx@linutronix.de \
--cc=tsbogend@alpha.franken.de \
--cc=vincent.whitchurch@axis.com \
--cc=vincenzo.frascino@arm.com \
--cc=wangkefeng.wang@huawei.com \
--cc=will@kernel.org \
--cc=x86@kernel.org \
--cc=yangtiezhu@loongson.cn \
--cc=yhs@fb.com \
--cc=yzaikin@google.com \
--cc=zong.li@sifive.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.