From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f74.google.com (mail-ed1-f74.google.com [209.85.208.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6DBDD800 for ; Sun, 28 Jun 2026 00:11:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782605479; cv=none; b=Ki0BCLp/E2Z3jOS3Xbi5T1jVL+VPk0h99IAbztOmOPdpEZAp85DYQd4KI4ZSv6x6Ni3ilQiftBOWcnFdYqdMHO81knJdTrZ5ycI43uwLwOiovOr7/4UAC560RMk3sWOeKyTZ0ZybZF2z2dNRDoLcsXXra0AeJpLIuD/q7PNfRKc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782605479; c=relaxed/simple; bh=ZIl00O5Rl1zx/tfbBISYmp8PtI/jgO3yeBNRXK49XYo=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=dVfWTqc7RBgpWL8+AsOV5SI6y8WOYj2DmrZPq4WKtuj8anNW20LmiuTaNt0VZfwbjWi+tj0bFWdXWhkSz75C3uNMxJrTo8W9CteQl9XvFz10Q0L+87TCEfnR0ueAvB+nf1f+H/qdXUzepz8tq+J76TF0ncaN5Z+HrPcrcZjbWF0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--tarunsahu.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=fygqpnRy; arc=none smtp.client-ip=209.85.208.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--tarunsahu.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="fygqpnRy" Received: by mail-ed1-f74.google.com with SMTP id 4fb4d7f45d1cf-695df90dec0so2253294a12.0 for ; Sat, 27 Jun 2026 17:11:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782605477; x=1783210277; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=hgM2C+2tmAHXCXi1Erw+RqOrmUTdjS2vF4qNTQXjKRc=; b=fygqpnRyXn0ZY3nFVvp7zI1I4QBUkk5r+pIqtCj71ltlBNfwADV5v8/mgT56ZtBWif oKxeLaeV6XSS5FxrpsbPj2Sv2rZr9TC9NmB1n7JCqq5020iSszkMvw+E6O6EEi5thRlf 97Tf2nRWXBEy4Xc3QEYPuL4HMOD10/AU3DnnQN3TAIEwcucpqzqRwOv7H8h4ggxrXSnC jKCcAVfdMYd7/Pwr20lMh+razL3cpQlyuiPTy6l+dcaXQSKzcGYP17vlB+RYmKx68XkR l+cdnSlU6Vp4mwIPtZ/imOOe0zestuthaL+GshY0ThYtxkQUXdhlRJiFDXBCZNmG2DCe g/gw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782605477; x=1783210277; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=hgM2C+2tmAHXCXi1Erw+RqOrmUTdjS2vF4qNTQXjKRc=; b=Kr5WKWda9ORkLeKt+dlCnxR2+NKjtJ51yhabE+5DIzR2UIUtcnfCicuV9b1JtD9Lbk JD/BLNTsI8BUKl547674iRdcEF7MhH8W9ZJgqd4HvtsBP/uLZnP1nTts79tf4qUB/soD xcpFpvknUz+VRYLG127ig6u33rv1zA2bry1znn3F4XvVnMFwgq/FCKuDc8BVVWW3EaYb 1TpFzpPVnZS9cS54PCYF2r8mYcyTbWpqe4UXc4YhwXq0Nu+Xu9FB4RA9G0YIGUyRcx3s uJ/LoKZCWsYmQimF9BN2sJq/TlrH26M3EJyQ1UYCnGybFNlcCJip3ekP2okvDvbv5LYf xJVQ== X-Forwarded-Encrypted: i=1; AHgh+RoRTXxrL7vccIgHWF3A/i+WZfAK/e3BxPpGO1GOQAcbu6VXMSVIxp3tt57UZ+CxJkBKody8GfCXJB08ONk=@vger.kernel.org X-Gm-Message-State: AOJu0Yz+q6pgDNtWMYeYKYX8FxIvoyo+wH9J5MmgLvDTbKrOc3QcbcNW l0WCsWY7Ie+ALMri8dABJhIzZFlEnP1Ma3g2VNEOrvUoQgkkHINtYIWPMIMwWDOhLCcCzwlb3rp X8kTzSpiTmuxLWCgSsA== X-Received: from edsk16.prod.google.com ([2002:aa7:d8d0:0:b0:698:4825:edc9]) (user=tarunsahu job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6402:22cb:b0:698:3b7c:be67 with SMTP id 4fb4d7f45d1cf-6983b7cc7e5mr1598424a12.35.1782605476512; Sat, 27 Jun 2026 17:11:16 -0700 (PDT) Date: Sun, 28 Jun 2026 00:11:11 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260628001114.1869564-1-tarunsahu@google.com> Subject: [PATCH v6 0/3] luo: convert serialized ptr to KHOSER_PTR From: Tarun Sahu To: Pasha Tatashin , Pratyush Yadav , Andrew Morton , linux-mm@kvack.org, Mike Rapoport , Alexander Graf , skhawaja@google.com Cc: kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Tarun Sahu Content-Type: text/plain; charset="UTF-8" Convert raw serialized_data to KHO serializeable pointer (KHOSER_PTR). This series also takes care of resolving the bug with memfd of using phys_to_virt before checking the args->serialized_data value. Tested ./luo_kexec_simple --stage 1 && 2 v6 <- v5 -Compilation error fix -Nit comment fixes v5 <- v4 -separate the memfd_luo fix in a new commit to allow backport if needed. v4 <- RESEND V3 -use only KHOSER_COPY_PTR and have compiler time check for type excluding void * types. Remove TYPE(UN)SAFE variants. RESEND V3: -Sent incorrect thread format earlier, this one is with correct one. v3 <- v2 -Rebased on top of liveupdate/next v2 <- v1 -Use KHOSER_PTR across liveupdate files instead of only memfd_luo Tarun Sahu (3): mm/memfd_luo: validate serialized_data before conversion kho: add KHOSER_COPY_PTR to allow phys copy of serialized ptr luo: Update serialized data to use KHOSER_PTR include/linux/kho/abi/kexec_handover.h | 11 +++++++++++ include/linux/kho/abi/luo.h | 5 +++-- include/linux/liveupdate.h | 4 ++-- kernel/liveupdate/luo_file.c | 24 ++++++++++++------------ mm/memfd_luo.c | 16 +++++++--------- 5 files changed, 35 insertions(+), 25 deletions(-) base-commit: e98a9c61721c14bcd29f11f4802e52e908701f7a -- 2.55.0.rc0.799.gd6f94ed593-goog