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From: Peter Zijlstra <peterz@infradead.org>
To: x86@kernel.org
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
	keescook@chromium.org, hjl.tools@gmail.com,
	andrew.cooper3@citrix.com, mark.rutland@arm.com, will@kernel.org,
	ndesaulniers@google.com
Subject: [PATCH v2 0/6] x86: Add stright-line-speculation mitigations
Date: Sat, 04 Dec 2021 14:43:38 +0100	[thread overview]
Message-ID: <20211204134338.760603010@infradead.org> (raw)

Respin and split of the SLS patch.

Since the old patch hit a snag, I've split up the patch as per popular demand.

New this time are patches 1 and 5 and some minor edits to the last patch, the
rest is mostly identical.

Patch 1 removes a 32bit (abuse) of the RET macro; which got exposed by the
build robot due to a change in the last patch (defining RET even for
!CONFIG_SLS). It would've been possible to revert to the old method of relying
on AS being case insensitive and RET being a valid instruction etc.. but I
figured that code was convoluted enough to warrant cleaning up anyway.

Patch 5 is what made Boris' machine go BUG when he tried to use the SLS patch.

Combined it seems to boot and build a kernel for me, so it must be perfect this
time (fingers crossed).


             reply	other threads:[~2021-12-04 13:54 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-04 13:43 Peter Zijlstra [this message]
2021-12-04 13:43 ` [PATCH v2 1/6] x86/atomic64_386_32: Rename things Peter Zijlstra
2021-12-10 11:05   ` [tip: x86/core] x86/lib/atomic64_386_32: " tip-bot2 for Peter Zijlstra
2021-12-04 13:43 ` [PATCH v2 2/6] x86: Prepare asm files for straight-line-speculation Peter Zijlstra
2021-12-10 11:05   ` [tip: x86/core] " tip-bot2 for Peter Zijlstra
2021-12-04 13:43 ` [PATCH v2 3/6] x86: Prepare inline-asm " Peter Zijlstra
2021-12-10 11:05   ` [tip: x86/core] " tip-bot2 for Peter Zijlstra
2021-12-04 13:43 ` [PATCH v2 4/6] objtool: Add straight-line-speculation validation Peter Zijlstra
2021-12-10 11:05   ` [tip: x86/core] " tip-bot2 for Peter Zijlstra
2021-12-04 13:43 ` [PATCH v2 5/6] x86/alternative: Relax text_poke_bp() constraint Peter Zijlstra
2021-12-10 11:05   ` [tip: x86/core] " tip-bot2 for Peter Zijlstra
2021-12-04 13:43 ` [PATCH v2 6/6] x86: Add straight-line-speculation mitigation Peter Zijlstra
2021-12-10 11:05   ` [tip: x86/core] " tip-bot2 for Peter Zijlstra

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