From: Peter Zijlstra <peterz@infradead.org>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
alyssa.milburn@intel.com, scott.d.constable@intel.com,
joao@overdrivepizza.com, jpoimboe@kernel.org,
jose.marchesi@oracle.com, hjl.tools@gmail.com,
ndesaulniers@google.com, samitolvanen@google.com,
nathan@kernel.org, ojeda@kernel.org, kees@kernel.org,
alexei.starovoitov@gmail.com, mhiramat@kernel.org, jmill@asu.edu
Subject: Re: [PATCH v3 03/10] x86/traps: Decode 0xEA #UD
Date: Wed, 19 Feb 2025 17:49:15 +0100 [thread overview]
Message-ID: <20250219164915.GH34567@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <101d4be1-9090-4d3f-8f21-d1ab6ecb79cd@citrix.com>
On Wed, Feb 19, 2025 at 04:47:10PM +0000, Andrew Cooper wrote:
> On 19/02/2025 4:21 pm, Peter Zijlstra wrote:
> > FineIBT will start using 0xEA as #UD
> >
> > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
>
> FINEIBT probably ought to gain a "depends on X86_64" too, or this is
> going to go wrong in a very fun way.
It already is:
config X86_KERNEL_IBT
depends on X86_64 && CC_HAS_IBT && HAVE_OBJTOOL
Nobody wants to touch i386 if they don't have to :-)
next prev parent reply other threads:[~2025-02-19 16:49 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-19 16:21 [PATCH v3 00/10] x86/ibt: FineIBT-BHI Peter Zijlstra
2025-02-19 16:21 ` [PATCH v3 01/10] x86/cfi: Add warn option Peter Zijlstra
2025-02-19 17:50 ` Kees Cook
2025-02-19 17:56 ` Peter Zijlstra
2025-02-19 16:21 ` [PATCH v3 02/10] x86/ibt: Add exact_endbr() helper Peter Zijlstra
2025-02-19 17:51 ` Kees Cook
2025-02-19 16:21 ` [PATCH v3 03/10] x86/traps: Decode 0xEA #UD Peter Zijlstra
2025-02-19 16:47 ` Andrew Cooper
2025-02-19 16:49 ` Peter Zijlstra [this message]
2025-02-19 17:52 ` Kees Cook
2025-02-19 16:21 ` [PATCH v3 04/10] x86/traps: Allow custom fixups in handle_bug() Peter Zijlstra
2025-02-19 17:55 ` Kees Cook
2025-02-19 18:17 ` Peter Zijlstra
2025-02-19 16:21 ` [PATCH v3 05/10] x86/ibt: Optimize FineIBT sequence Peter Zijlstra
2025-02-19 17:15 ` Andrew Cooper
2025-02-20 18:28 ` Constable, Scott D
2025-02-19 18:01 ` Kees Cook
2025-02-19 18:18 ` Peter Zijlstra
2025-02-19 18:23 ` Kees Cook
2025-02-19 16:21 ` [PATCH v3 06/10] x86/traps: Decode LOCK Jcc.d8 #UD Peter Zijlstra
2025-02-19 16:45 ` Peter Zijlstra
2025-02-19 18:20 ` Kees Cook
2025-02-19 18:33 ` Peter Zijlstra
2025-02-19 19:44 ` Peter Zijlstra
2025-02-19 16:21 ` [PATCH v3 07/10] x86/ibt: Add paranoid FineIBT mode Peter Zijlstra
2025-02-19 17:31 ` Andrew Cooper
2025-02-19 20:07 ` Peter Zijlstra
2025-02-21 13:40 ` David Laight
2025-02-19 18:05 ` Kees Cook
2025-02-19 16:21 ` [PATCH v3 08/10] x86: BHI stubs Peter Zijlstra
2025-02-19 18:07 ` Kees Cook
2025-02-19 18:07 ` Peter Zijlstra
2025-02-19 16:21 ` [PATCH v3 09/10] x86/ibt: Implement FineIBT-BHI mitigation Peter Zijlstra
2025-02-19 18:11 ` Kees Cook
2025-02-19 16:21 ` [PATCH v3 10/10] x86/ibt: Optimize fineibt-bhi arity 1 case Peter Zijlstra
2025-02-19 18:21 ` Kees Cook
2025-02-19 17:36 ` [PATCH v3 00/10] x86/ibt: FineIBT-BHI Kees Cook
2025-02-20 11:27 ` Peter Zijlstra
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