From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BE224293C58; Thu, 26 Jun 2025 23:56:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750982211; cv=none; b=JM6ZJFlmcIrOzcIl1mPc7WlrZ18ftU0B+RP3g59lc6fsD4ywLIidnkfKtyvx4+PCenJZdpOjao8gaQJiO6r8jl+saBFP0R3M8SndO5t5LT05xMxY1In3Xk8chQSbVLzm1p92TaCaNxQBexn0ATNSabozjQ3Mr+BXP+BIyotC9S4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750982211; c=relaxed/simple; bh=Ft/SDFBoP1mGfNI3AHYATzlmZliEzR8uCXsFtlQ3RME=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ExdkBe2yURThUqzIu3I4t22PNuGPuLkynvfXqhc/OFSQWpCOBKCpSbixZh5zKqNzl8z+h/nnDCvMFDUg5vvWJVnqL/Hob3Ks8kGANHmGf2vSszM5fmcxtphoEvbLTIyvMv/Ix4UgHNlZPiBYmp11a/1/U3p63QnGGo0ybZIE8RA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ival/QGR; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Ival/QGR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 17DCCC4CEF4; Thu, 26 Jun 2025 23:56:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750982211; bh=Ft/SDFBoP1mGfNI3AHYATzlmZliEzR8uCXsFtlQ3RME=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ival/QGR0TnT6z1zvcGFcQU4RrudIBDzchswpKsfcH0W1b4DUOWi5KR31+tRoJ8Or iDEI1tEeUfUlCRZyoOl9ilEG+o7YNH8lacTW74cwlI8viTvQ7BDt3UUt9werUX/Xne NLUPGWIQO2hmn+3sqLBBMVvhLpan/3H0zrT6jMKy6kx5CwG1WsIlBK8fnpUQkyMf2h 6frw5XS4pzYvBokuc3L5r+RgFqEw6jJYYbnOkiHGz2o34GbvG9OWC6kw/Uj9LftxLP 4rsi50KzasFRbo/8aP3Tf2qsXQhHRP4PgyWX06i52VWpXG2ilQBEfxItr1YpWdOk0k FrfMygguTDEfA== From: Josh Poimboeuf To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Petr Mladek , Miroslav Benes , Joe Lawrence , live-patching@vger.kernel.org, Song Liu , laokz , Jiri Kosina , Marcos Paulo de Souza , Weinan Liu , Fazla Mehrab , Chen Zhongjin , Puranjay Mohan , Dylan Hatch Subject: [PATCH v3 57/64] livepatch: Add CONFIG_KLP_BUILD Date: Thu, 26 Jun 2025 16:55:44 -0700 Message-ID: <38ab721002c42abe6664aeef25b4bfa095f6b101.1750980517.git.jpoimboe@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: live-patching@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit In preparation for introducing klp-build, add a new CONFIG_KLP_BUILD option. The initial version will only be supported on x86-64. Signed-off-by: Josh Poimboeuf --- arch/x86/Kconfig | 1 + kernel/livepatch/Kconfig | 12 ++++++++++++ 2 files changed, 13 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 62faa62b5959..448c6bfb71d6 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -266,6 +266,7 @@ config X86 select HAVE_FUNCTION_ERROR_INJECTION select HAVE_KRETPROBES select HAVE_RETHOOK + select HAVE_KLP_BUILD if X86_64 select HAVE_LIVEPATCH if X86_64 select HAVE_MIXED_BREAKPOINTS_REGS select HAVE_MOD_ARCH_SPECIFIC diff --git a/kernel/livepatch/Kconfig b/kernel/livepatch/Kconfig index 53d51ed619a3..4c0a9c18d0b2 100644 --- a/kernel/livepatch/Kconfig +++ b/kernel/livepatch/Kconfig @@ -18,3 +18,15 @@ config LIVEPATCH module uses the interface provided by this option to register a patch, causing calls to patched functions to be redirected to new function code contained in the patch module. + +config HAVE_KLP_BUILD + bool + help + Arch supports klp-build + +config KLP_BUILD + def_bool y + depends on LIVEPATCH && HAVE_KLP_BUILD + select OBJTOOL + help + Enable klp-build support -- 2.49.0