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From: Ingo Molnar <mingo@kernel.org>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Andy Lutomirski <luto@kernel.org>,
	"H. Peter Anvin" <hpa@zytor.com>, Andi Kleen <ak@linux.intel.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Joerg Roedel <joro@8bytes.org>, Jiri Olsa <jolsa@redhat.com>,
	linux-kernel@vger.kernel.org, x86@kernel.org
Subject: Re: [PATCH RFC 10/19] perf tools: Create maps for x86_64 KPTI entry trampolines
Date: Mon, 14 May 2018 10:32:57 +0200	[thread overview]
Message-ID: <20180514083257.GA29509@gmail.com> (raw)
In-Reply-To: <1525866228-30321-11-git-send-email-adrian.hunter@intel.com>


* Adrian Hunter <adrian.hunter@intel.com> wrote:

> Create maps for x86_64 KPTI entry trampolines, based on symbols found in
> kallsyms. It is also necessary to keep track of whether the trampolines
> have been mapped particularly when the kernel dso is kcore.
> 
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> ---
>  tools/perf/util/machine.c | 138 ++++++++++++++++++++++++++++++++++++++++++++--
>  tools/perf/util/machine.h |   1 +
>  tools/perf/util/symbol.c  |  17 ++++++
>  3 files changed, 150 insertions(+), 6 deletions(-)

Minor detail, please call it 'x86 PTI'.

Thanks,

	Ingo

  reply	other threads:[~2018-05-14  8:33 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-09 11:43 [PATCH RFC 00/19] perf tools and x86_64 KPTI entry trampolines Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 01/19] kallsyms: Simplify update_iter_mod() Adrian Hunter
2018-05-10 13:01   ` Jiri Olsa
2018-05-10 17:02     ` Hunter, Adrian
2018-05-14 17:55       ` Arnaldo Carvalho de Melo
2018-05-09 11:43 ` [PATCH RFC 02/19] kallsyms, x86: Export addresses of syscall trampolines Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 03/19] x86: Add entry trampolines to kcore Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 04/19] x86: kcore: Give entry trampolines all the same offset in kcore Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 05/19] perf tools: Use the _stest symbol to identify the kernel map when loading kcore Adrian Hunter
2018-05-16 18:04   ` [tip:perf/core] perf tools: Use the "_stest" " tip-bot for Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 06/19] perf tools: Fix kernel_start for KPTI on x86_64 Adrian Hunter
2018-05-09 17:08   ` Arnaldo Carvalho de Melo
2018-05-09 11:43 ` [PATCH RFC 07/19] perf tools: Workaround missing maps for x86_64 KPTI entry trampolines Adrian Hunter
2018-05-09 17:07   ` Arnaldo Carvalho de Melo
2018-05-10 19:08     ` Hunter, Adrian
2018-05-10 20:15       ` Arnaldo Carvalho de Melo
2018-05-10 20:19         ` Arnaldo Carvalho de Melo
2018-05-10 20:47           ` Arnaldo Carvalho de Melo
2018-05-11 11:18             ` Adrian Hunter
2018-05-11 14:45               ` Arnaldo Carvalho de Melo
2018-05-14 13:02                 ` Adrian Hunter
2018-05-11 11:15         ` Adrian Hunter
2018-05-15 10:30   ` Jiri Olsa
2018-05-15 10:40     ` Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 08/19] perf tools: Fix map_groups__split_kallsyms() for entry trampoline symbols Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 09/19] perf tools: Allow for special kernel maps Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 10/19] perf tools: Create maps for x86_64 KPTI entry trampolines Adrian Hunter
2018-05-14  8:32   ` Ingo Molnar [this message]
2018-05-09 11:43 ` [PATCH RFC 11/19] perf tools: Synthesize and process mmap events " Adrian Hunter
2018-05-15 10:49   ` Jiri Olsa
2018-05-09 11:43 ` [PATCH RFC 12/19] perf buildid-cache: kcore_copy: Keep phdr data in a list Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 13/19] perf buildid-cache: kcore_copy: Keep a count of phdrs Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 14/19] perf buildid-cache: kcore_copy: Calculate offset from phnum Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 15/19] perf buildid-cache: kcore_copy: Layout sections Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 16/19] perf buildid-cache: kcore_copy: Iterate phdrs Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 17/19] perf buildid-cache: kcore_copy: Get rid of kernel_map Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 18/19] perf buildid-cache: kcore_copy: Copy x86_64 entry trampoline sections Adrian Hunter
2018-05-09 11:43 ` [PATCH RFC 19/19] perf buildid-cache: kcore_copy: Amend the offset of sections that remap kernel text Adrian Hunter

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