From nobody Wed Dec 17 14:31:21 2025 Received: from forwardcorp1a.mail.yandex.net (forwardcorp1a.mail.yandex.net [178.154.239.72]) (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 9AE49221733 for ; Mon, 10 Mar 2025 12:04:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.154.239.72 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741608278; cv=none; b=YmiEyvc8YFsro59t0v4j8SJKpCmmMFkRGVQNsCE0LqBJjHvRnaYjlwdFByTepOeN8L/DTnvxI2uSJe1yvc5m3zFOCq5q+y7I+AOgCgWjedsqXa3T+N2spF4b3uI0OwZ0HkVmu5ezonwTvWrIAULLeS7Ezg8ohRywXRE+I0ysvqA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741608278; c=relaxed/simple; bh=Npn4X6d6WGu5s6M3va8+mm8EMB42OwT4Yrz2X7vo9ok=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=n4gxrQUKPMYd+UmhzNjU+Fqi86uhmQSwmh1XmAtn6fsXqfNc1fY1CaN6NeM4EZEVvyvz7/osyRA2l1hCyQGYJeuibQ+3wVZsBPsUWa42azb9s+n20GHgfqpTmc4YRwDZWLHx4HZUhJmz4AqTcUCDK0oYeutq+PlTJfKja9fNthQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=yandex-team.com; spf=pass smtp.mailfrom=yandex-team.com; dkim=pass (1024-bit key) header.d=yandex-team.com header.i=@yandex-team.com header.b=X8XMfwpK; arc=none smtp.client-ip=178.154.239.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=yandex-team.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=yandex-team.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=yandex-team.com header.i=@yandex-team.com header.b="X8XMfwpK" Received: from mail-nwsmtp-smtp-corp-main-83.vla.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-83.vla.yp-c.yandex.net [IPv6:2a02:6b8:c1f:600c:0:640:a431:0]) by forwardcorp1a.mail.yandex.net (Yandex) with ESMTPS id EB62A60EA5; Mon, 10 Mar 2025 15:04:14 +0300 (MSK) Received: from dellarbn.yandex.net (unknown [10.214.35.248]) by mail-nwsmtp-smtp-corp-main-83.vla.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id s3o0lL2FT0U0-4JGepy3f; Mon, 10 Mar 2025 15:04:14 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.com; s=default; t=1741608254; bh=x8DAP9eUkaG75fkMO+dR1XpuCnXAgRk3qwZNeEbFzSE=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=X8XMfwpKpDu3TGM8eK67J+BXWD2pI0JbT66tVSPMZZ0DiCY2JiXh7/uXc320kZaMU IJHEWFV9cPloQKHvb18wQ0KuvOvE+q0ePmRIbCRYatLzo/haokQJ41l3Mfs/0sOpwX 2f3uIuhOrLk7paFJV3a+Y4xsnqPm9YHI58QoRTVk= Authentication-Results: mail-nwsmtp-smtp-corp-main-83.vla.yp-c.yandex.net; dkim=pass header.i=@yandex-team.com From: Andrey Ryabinin To: linux-kernel@vger.kernel.org Cc: Alexander Graf , James Gowans , Mike Rapoport , Andrew Morton , linux-mm@kvack.org, Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H . Peter Anvin" , Eric Biederman , kexec@lists.infradead.org, Pratyush Yadav , Jason Gunthorpe , Pasha Tatashin , David Rientjes , Andrey Ryabinin Subject: [PATCH v2 6/7] kexec, kstate: save kstate data before kexec'ing Date: Mon, 10 Mar 2025 13:03:17 +0100 Message-ID: <20250310120318.2124-7-arbn@yandex-team.com> X-Mailer: git-send-email 2.45.3 In-Reply-To: <20250310120318.2124-1-arbn@yandex-team.com> References: <20250310120318.2124-1-arbn@yandex-team.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Call kstate_save_state() to serialize all the required data into the kstate data stream. Signed-off-by: Andrey Ryabinin --- kernel/kexec_core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c index 5d001b7a9e44..7dcdaee14bfa 100644 --- a/kernel/kexec_core.c +++ b/kernel/kexec_core.c @@ -1017,11 +1017,14 @@ int kernel_kexec(void) error =3D -EINVAL; goto Unlock; } + error =3D kstate_save_state(); + if (error) + goto Unlock; =20 if (kexec_late_load(kexec_image)) { error =3D kexec_file_load_segments(kexec_image); if (error) - goto Unlock; + goto Free_kstate; } =20 #ifdef CONFIG_KEXEC_JUMP @@ -1104,6 +1107,8 @@ int kernel_kexec(void) } #endif =20 + Free_kstate: + free_kstate_stream(); Unlock: kexec_unlock(); return error; --=20 2.45.3