From: Borislav Petkov <bp@alien8.de>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>,
Jann Horn <jannh@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Andrey Ryabinin <aryabinin@virtuozzo.com>,
Alexander Potapenko <glider@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org,
Andrey Konovalov <andreyknvl@google.com>,
Andy Lutomirski <luto@kernel.org>,
Sean Christopherson <sean.j.christopherson@intel.com>
Subject: Re: [PATCH v7 1/4] x86/insn-eval: Add support for 64-bit kernel mode
Date: Thu, 2 Jan 2020 10:27:33 +0100 [thread overview]
Message-ID: <20200102092733.GA8345@zn.tnic> (raw)
In-Reply-To: <498AAA9C-4779-4557-BBF5-A05C55563204@amacapital.net>
On Thu, Jan 02, 2020 at 04:55:22PM +0900, Andy Lutomirski wrote:
> > In most cases you have struct insn around (or can easily pass it down to
> > the place). Why not use insn->x86_64?
>
> What populates that?
insn_init() AFAICT.
However, you have cases where you don't have struct insn:
fixup_umip_exception() uses it and it calls insn_get_seg_base() which
does use it too.
> FWIW, this code is a bit buggy: it gets EFI mixed mode wrong. I’m
> not entirely sure we care.
We'll cross that bridge when we get there, I'd say.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2020-01-02 9:27 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-18 23:11 [PATCH v7 1/4] x86/insn-eval: Add support for 64-bit kernel mode Jann Horn
2019-12-18 23:11 ` [PATCH v7 2/4] x86/traps: Print address on #GP Jann Horn
2020-01-01 10:07 ` [tip: x86/core] " tip-bot2 for Jann Horn
2019-12-18 23:11 ` [PATCH v7 3/4] x86/dumpstack: Introduce die_addr() for die() with #GP fault address Jann Horn
2019-12-31 12:11 ` Borislav Petkov
2019-12-31 16:31 ` [PATCH] x86/traps: Cleanup do_general_protection() Borislav Petkov
2020-01-01 10:07 ` [tip: x86/core] x86/dumpstack: Introduce die_addr() for die() with #GP fault address tip-bot2 for Jann Horn
2019-12-18 23:11 ` [PATCH v7 4/4] x86/kasan: Print original address on #GP Jann Horn
2019-12-19 10:21 ` Dmitry Vyukov
2020-01-01 10:07 ` [tip: x86/core] " tip-bot2 for Jann Horn
2020-01-01 10:07 ` [tip: x86/core] x86/insn-eval: Add support for 64-bit kernel mode tip-bot2 for Jann Horn
2020-01-02 7:47 ` [PATCH v7 1/4] " Kirill A. Shutemov
2020-01-02 7:55 ` Andy Lutomirski
2020-01-02 9:27 ` Borislav Petkov [this message]
2020-01-02 9:49 ` Kirill A. Shutemov
2020-01-02 10:01 ` Borislav Petkov
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