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 110811F37DA; Sat, 8 Nov 2025 00:21:15 +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=1762561276; cv=none; b=X88eoFq2jRyWXEwLnT/2YE2sRXq449OwP/KQeSfwrbLCa5qVTIYf0s6G1T4JNXdK/5td42B23Y8GjZMmCotNh/r09jRY1BD3rZsQh3YAK/L1H3mqeFQ4du0C+h5WKutmQpYXuyoXENW7j5fVGUUUAdqHnCtP1IEuyi6Ep5hGd1w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762561276; c=relaxed/simple; bh=oooif4lvsoKM3Omr0sJHfIupPNJPx2HzUMN1+/svbfs=; h=Date:To:From:Subject:Message-Id; b=a/whcrNrXcb8UmE86lBSIUsvtMZcRLRrKPFks9h9/PVNU+kFuJNFuhg8zPWw3E/g7AGB016e+nyGJVkE4zTmFXKX/ABU96fUKJVVjFY1LsDBs7r/PTsGCB1MnRdlMvWhjP5J/DCgtOLTyGlUd0zUcJTPeHkTuDnPxJ6tpWR/6ko= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=Bh1KYjuN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="Bh1KYjuN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 83E69C4AF09; Sat, 8 Nov 2025 00:21:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1762561275; bh=oooif4lvsoKM3Omr0sJHfIupPNJPx2HzUMN1+/svbfs=; h=Date:To:From:Subject:From; b=Bh1KYjuNASaQA1LCIkJyXX+vH47+dkVzBq+FW8/3IsQT1eA3tQDdj1GVFOnqWpncD DguGQbVATEdBcaauXnjXa/IScaRdVc3L/9jHG5jelsvjbNhs6jEVgUgbMgUICElnVZ 1hDH3bPQz8bCn7rYjYdzFfc66ToF5PfSqZVuA8LM= Date: Fri, 07 Nov 2025 16:21:14 -0800 To: mm-commits@vger.kernel.org,zohar@linux.ibm.com,stable@vger.kernel.org,roberto.sassu@huawei.com,graf@amazon.com,chenste@linux.microsoft.com,bhe@redhat.com,piliu@redhat.com,akpm@linux-foundation.org From: Andrew Morton Subject: + kernel-kexec-change-the-prototype-of-kimage_map_segment.patch added to mm-hotfixes-unstable branch Message-Id: <20251108002115.83E69C4AF09@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: kernel/kexec: change the prototype of kimage_map_segment() has been added to the -mm mm-hotfixes-unstable branch. Its filename is kernel-kexec-change-the-prototype-of-kimage_map_segment.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kernel-kexec-change-the-prototype-of-kimage_map_segment.patch This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Pingfan Liu Subject: kernel/kexec: change the prototype of kimage_map_segment() Date: Thu, 6 Nov 2025 14:59:03 +0800 The kexec segment index will be required to extract the corresponding information for that segment in kimage_map_segment(). Additionally, kexec_segment already holds the kexec relocation destination address and size. Therefore, the prototype of kimage_map_segment() can be changed. Link: https://lkml.kernel.org/r/20251106065904.10772-1-piliu@redhat.com Fixes: 07d24902977e ("kexec: enable CMA based contiguous allocation") Signed-off-by: Pingfan Liu Cc: Baoquan He Cc: Mimi Zohar Cc: Roberto Sassu Cc: Alexander Graf Cc: Steven Chen Cc: Signed-off-by: Andrew Morton --- include/linux/kexec.h | 4 ++-- kernel/kexec_core.c | 9 ++++++--- security/integrity/ima/ima_kexec.c | 4 +--- 3 files changed, 9 insertions(+), 8 deletions(-) --- a/include/linux/kexec.h~kernel-kexec-change-the-prototype-of-kimage_map_segment +++ a/include/linux/kexec.h @@ -530,7 +530,7 @@ extern bool kexec_file_dbg_print; #define kexec_dprintk(fmt, arg...) \ do { if (kexec_file_dbg_print) pr_info(fmt, ##arg); } while (0) -extern void *kimage_map_segment(struct kimage *image, unsigned long addr, unsigned long size); +extern void *kimage_map_segment(struct kimage *image, int idx); extern void kimage_unmap_segment(void *buffer); #else /* !CONFIG_KEXEC_CORE */ struct pt_regs; @@ -540,7 +540,7 @@ static inline void __crash_kexec(struct static inline void crash_kexec(struct pt_regs *regs) { } static inline int kexec_should_crash(struct task_struct *p) { return 0; } static inline int kexec_crash_loaded(void) { return 0; } -static inline void *kimage_map_segment(struct kimage *image, unsigned long addr, unsigned long size) +static inline void *kimage_map_segment(struct kimage *image, int idx) { return NULL; } static inline void kimage_unmap_segment(void *buffer) { } #define kexec_in_progress false --- a/kernel/kexec_core.c~kernel-kexec-change-the-prototype-of-kimage_map_segment +++ a/kernel/kexec_core.c @@ -960,17 +960,20 @@ int kimage_load_segment(struct kimage *i return result; } -void *kimage_map_segment(struct kimage *image, - unsigned long addr, unsigned long size) +void *kimage_map_segment(struct kimage *image, int idx) { + unsigned long addr, size, eaddr; unsigned long src_page_addr, dest_page_addr = 0; - unsigned long eaddr = addr + size; kimage_entry_t *ptr, entry; struct page **src_pages; unsigned int npages; void *vaddr = NULL; int i; + addr = image->segment[idx].mem; + size = image->segment[idx].memsz; + eaddr = addr + size; + /* * Collect the source pages and map them in a contiguous VA range. */ --- a/security/integrity/ima/ima_kexec.c~kernel-kexec-change-the-prototype-of-kimage_map_segment +++ a/security/integrity/ima/ima_kexec.c @@ -250,9 +250,7 @@ void ima_kexec_post_load(struct kimage * if (!image->ima_buffer_addr) return; - ima_kexec_buffer = kimage_map_segment(image, - image->ima_buffer_addr, - image->ima_buffer_size); + ima_kexec_buffer = kimage_map_segment(image, image->ima_segment_index); if (!ima_kexec_buffer) { pr_err("Could not map measurements buffer.\n"); return; _ Patches currently in -mm which might be from piliu@redhat.com are kernel-kexec-change-the-prototype-of-kimage_map_segment.patch kernel-kexec-fix-ima-when-allocation-happens-in-cma-area.patch