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From: Jiri Kosina <jikos@kernel.org>
To: Daniel Bristot de Oliveira <bristot@redhat.com>
Cc: linux-kernel@vger.kernel.org,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Pavel Tatashin <pasha.tatashin@oracle.com>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	"Steven Rostedt (VMware)" <rostedt@goodmis.org>,
	Zhou Chengming <zhouchengming1@huawei.com>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	"Peter Zijlstra (Intel)" <peterz@infradead.org>,
	Chris von Recklinghausen <crecklin@redhat.com>,
	Jason Baron <jbaron@akamai.com>, Scott Wood <swood@redhat.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Clark Williams <williams@redhat.com>,
	x86@kernel.org
Subject: Re: [PATCH V2 5/9] x86/alternative: Split text_poke_bp() into tree steps
Date: Wed, 19 Dec 2018 09:44:17 +0100 (CET)	[thread overview]
Message-ID: <nycvar.YFH.7.76.1812190944040.17216@cbobk.fhfr.pm> (raw)
In-Reply-To: <0ae51df28b823b7ac22be513a65d8c24d3aabb10.1545149539.git.bristot@redhat.com>

On Tue, 18 Dec 2018, Daniel Bristot de Oliveira wrote:

> text_poke_bp() updates instructions on live kernel on SMP in three steps:
>  1) add a int3 trap to the address that will be patched
>  2) update all but the first byte of the patched range
>  3) replace the first byte (int3) by the first byte of
> 
> This patch creates one function for each of these steps.
> 
> Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Pavel Tatashin <pasha.tatashin@oracle.com>
> Cc: Masami Hiramatsu <mhiramat@kernel.org>
> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
> Cc: Zhou Chengming <zhouchengming1@huawei.com>
> Cc: Jiri Kosina <jkosina@suse.cz>

Acked-by: Jiri Kosina <jkosina@suse.cz>

-- 
Jiri Kosina
SUSE Labs


  parent reply	other threads:[~2018-12-19  8:44 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-18 16:46 [PATCH V2 0/9] x86/jump_label: Bound IPIs sent when updating a static key Daniel Bristot de Oliveira
2018-12-18 16:46 ` [PATCH V2 1/9] jump_label: Add for_each_label_entry helper Daniel Bristot de Oliveira
2018-12-18 21:19   ` Borislav Petkov
2018-12-19  7:38     ` Daniel Bristot de Oliveira
2018-12-19 10:37       ` Borislav Petkov
2018-12-18 16:46 ` [PATCH V2 2/9] jump_label: Add the jump_label_can_update_check() helper Daniel Bristot de Oliveira
2018-12-18 16:46 ` [PATCH V2 3/9] x86/jump_label: Move checking code away from __jump_label_transform() Daniel Bristot de Oliveira
2018-12-19  8:43   ` Jiri Kosina
2018-12-19  8:49     ` Thomas Gleixner
2018-12-19 10:14       ` Daniel Bristot de Oliveira
2018-12-18 16:46 ` [PATCH V2 4/9] x86/jump_label: Add __jump_label_set_jump_code() helper Daniel Bristot de Oliveira
2018-12-18 16:46 ` [PATCH V2 5/9] x86/alternative: Split text_poke_bp() into tree steps Daniel Bristot de Oliveira
2018-12-18 17:25   ` Steven Rostedt
2018-12-19  8:44   ` Jiri Kosina [this message]
2018-12-18 16:46 ` [PATCH V2 6/9] jump_label: Sort entries of the same key by the code Daniel Bristot de Oliveira
2018-12-18 16:46 ` [PATCH V2 7/9] x86/alternative: Batch of patch operations Daniel Bristot de Oliveira
2018-12-18 17:31   ` Steven Rostedt
2018-12-18 19:27     ` Daniel Bristot de Oliveira
2018-12-18 16:46 ` [PATCH V2 8/9] x86/jump_label: Batch jump label updates Daniel Bristot de Oliveira
2018-12-18 16:46 ` [PATCH V2 9/9] jump_label: Batch up if arch supports it Daniel Bristot de Oliveira
2018-12-18 17:35   ` Steven Rostedt
2018-12-18 19:33     ` Daniel Bristot de Oliveira
2018-12-18 20:32       ` Steven Rostedt
2018-12-18 21:06         ` Daniel Bristot de Oliveira

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