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From: Steven Rostedt <rostedt@goodmis.org>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Andy Lutomirski <luto@amacapital.net>,
	Ingo Molnar <mingo@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Andy Lutomirski <luto@kernel.org>,
	Nicolai Stange <nstange@suse.de>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	"H. Peter Anvin" <hpa@zytor.com>,
	the arch/x86 maintainers <x86@kernel.org>,
	Jiri Kosina <jikos@kernel.org>, Miroslav Benes <mbenes@suse.cz>,
	Petr Mladek <pmladek@suse.com>,
	Joe Lawrence <joe.lawrence@redhat.com>,
	Shuah Khan <shuah@kernel.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Tim Chen <tim.c.chen@linux.intel.com>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Mimi Zohar <zohar@linux.ibm.com>, Juergen Gross <jgross@suse.com>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Nayna Jain <nayna@linux.ibm.com>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Joerg Roedel <jroedel@suse.de>,
	"open list:KERNEL SELFTEST FRAMEWORK" 
	<linux-kselftest@vger.kernel.org>,
	stable <stable@vger.kernel.org>,
	Masami Hiramatsu <mhiramat@kernel.org>
Subject: Re: [RFC][PATCH 1/3] x86_64: Add gap to int3 to allow for call emulation
Date: Tue, 7 May 2019 14:57:24 -0400	[thread overview]
Message-ID: <20190507145724.132dc8ec@gandalf.local.home> (raw)
In-Reply-To: <20190507175655.u3kcvedpfao4rchj@treble>

On Tue, 7 May 2019 12:56:55 -0500
Josh Poimboeuf <jpoimboe@redhat.com> wrote:


> > +	.if \create_gap == 1
> > +	/*
> > +	 * If coming from kernel space, create a 6-word gap to allow the static
> > +	 * call #BP handler to emulate a call instruction.  
> 
> Might as well refer to it as the int3 handler, since that's what the
> rest of the code calls it.  Also, no static calls yet :-)  So:
> 
> s/static call #BP handler/int3 handler/
> 

Done.

-- Steve

WARNING: multiple messages have this Message-ID (diff)
From: rostedt at goodmis.org (Steven Rostedt)
Subject: [RFC][PATCH 1/3] x86_64: Add gap to int3 to allow for call emulation
Date: Tue, 7 May 2019 14:57:24 -0400	[thread overview]
Message-ID: <20190507145724.132dc8ec@gandalf.local.home> (raw)
In-Reply-To: <20190507175655.u3kcvedpfao4rchj@treble>

On Tue, 7 May 2019 12:56:55 -0500
Josh Poimboeuf <jpoimboe at redhat.com> wrote:


> > +	.if \create_gap == 1
> > +	/*
> > +	 * If coming from kernel space, create a 6-word gap to allow the static
> > +	 * call #BP handler to emulate a call instruction.  
> 
> Might as well refer to it as the int3 handler, since that's what the
> rest of the code calls it.  Also, no static calls yet :-)  So:
> 
> s/static call #BP handler/int3 handler/
> 

Done.

-- Steve

WARNING: multiple messages have this Message-ID (diff)
From: rostedt@goodmis.org (Steven Rostedt)
Subject: [RFC][PATCH 1/3] x86_64: Add gap to int3 to allow for call emulation
Date: Tue, 7 May 2019 14:57:24 -0400	[thread overview]
Message-ID: <20190507145724.132dc8ec@gandalf.local.home> (raw)
Message-ID: <20190507185724.Tc-54GqMO1-cLx0KlJlpwSzHBNBpxwMPYr1N0FvoUQE@z> (raw)
In-Reply-To: <20190507175655.u3kcvedpfao4rchj@treble>

On Tue, 7 May 2019 12:56:55 -0500
Josh Poimboeuf <jpoimboe@redhat.com> wrote:


> > +	.if \create_gap == 1
> > +	/*
> > +	 * If coming from kernel space, create a 6-word gap to allow the static
> > +	 * call #BP handler to emulate a call instruction.  
> 
> Might as well refer to it as the int3 handler, since that's what the
> rest of the code calls it.  Also, no static calls yet :-)  So:
> 
> s/static call #BP handler/int3 handler/
> 

Done.

-- Steve

  reply	other threads:[~2019-05-07 18:57 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-07 17:42 [RFC][PATCH 0/3] x86_64/ftrace: Emulate calls from int3 when patching functions Steven Rostedt
2019-05-07 17:42 ` Steven Rostedt
2019-05-07 17:42 ` rostedt
2019-05-07 17:42 ` [RFC][PATCH 1/3] x86_64: Add gap to int3 to allow for call emulation Steven Rostedt
2019-05-07 17:42   ` Steven Rostedt
2019-05-07 17:42   ` rostedt
2019-05-07 17:56   ` Josh Poimboeuf
2019-05-07 17:56     ` Josh Poimboeuf
2019-05-07 17:56     ` jpoimboe
2019-05-07 18:57     ` Steven Rostedt [this message]
2019-05-07 18:57       ` Steven Rostedt
2019-05-07 18:57       ` rostedt
2019-05-07 17:42 ` [RFC][PATCH 2/3] x86_64: Allow breakpoints to emulate call functions Steven Rostedt
2019-05-07 17:42   ` Steven Rostedt
2019-05-07 17:42   ` rostedt
2019-05-07 17:53   ` Josh Poimboeuf
2019-05-07 17:53     ` Josh Poimboeuf
2019-05-07 17:53     ` jpoimboe
2019-05-07 19:01     ` Steven Rostedt
2019-05-07 19:01       ` Steven Rostedt
2019-05-07 19:01       ` rostedt
2019-05-07 19:14       ` Josh Poimboeuf
2019-05-07 19:14         ` Josh Poimboeuf
2019-05-07 19:14         ` jpoimboe
2019-05-07 19:20         ` Steven Rostedt
2019-05-07 19:20           ` Steven Rostedt
2019-05-07 19:20           ` rostedt
2019-05-07 19:49           ` Josh Poimboeuf
2019-05-07 19:49             ` Josh Poimboeuf
2019-05-07 19:49             ` jpoimboe
2019-05-07 19:58             ` Steven Rostedt
2019-05-07 19:58               ` Steven Rostedt
2019-05-07 19:58               ` rostedt
2019-05-07 20:02               ` Josh Poimboeuf
2019-05-07 20:02                 ` Josh Poimboeuf
2019-05-07 20:02                 ` jpoimboe
2019-05-07 17:42 ` [RFC][PATCH 3/3] ftrace/x86_64: Emulate call function while updating in breakpoint handler Steven Rostedt
2019-05-07 17:42   ` Steven Rostedt
2019-05-07 17:42   ` rostedt

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