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865e2acd3e
Now crash codes under kernel/ folder has been split out from kexec code, crash dumping can be separated from kexec reboot in config items on s390 with some adjustments. Here wrap up crash dumping codes with CONFIG_CRASH_DUMP ifdeffery. Link: https://lkml.kernel.org/r/20240124051254.67105-10-bhe@redhat.com Signed-off-by: Baoquan He <bhe@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Hari Bathini <hbathini@linux.ibm.com> Cc: Pingfan Liu <piliu@redhat.com> Cc: Klara Modin <klarasmodin@gmail.com> Cc: Michael Kelley <mhklinux@outlook.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Yang Li <yang.lee@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Image loader for kexec_file_load system call.
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*
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* Copyright IBM Corp. 2018
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*
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* Author(s): Philipp Rudo <prudo@linux.vnet.ibm.com>
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*/
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/kexec.h>
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#include <asm/ipl.h>
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#include <asm/setup.h>
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static int kexec_file_add_kernel_image(struct kimage *image,
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struct s390_load_data *data)
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{
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struct kexec_buf buf;
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buf.image = image;
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buf.buffer = image->kernel_buf;
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buf.bufsz = image->kernel_buf_len;
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buf.mem = 0;
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#ifdef CONFIG_CRASH_DUMP
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if (image->type == KEXEC_TYPE_CRASH)
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buf.mem += crashk_res.start;
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#endif
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buf.memsz = buf.bufsz;
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data->kernel_buf = image->kernel_buf;
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data->kernel_mem = buf.mem;
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data->parm = image->kernel_buf + PARMAREA;
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data->memsz += buf.memsz;
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ipl_report_add_component(data->report, &buf,
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IPL_RB_COMPONENT_FLAG_SIGNED |
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IPL_RB_COMPONENT_FLAG_VERIFIED,
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IPL_RB_CERT_UNKNOWN);
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return kexec_add_buffer(&buf);
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}
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static void *s390_image_load(struct kimage *image,
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char *kernel, unsigned long kernel_len,
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char *initrd, unsigned long initrd_len,
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char *cmdline, unsigned long cmdline_len)
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{
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return kexec_file_add_components(image, kexec_file_add_kernel_image);
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}
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static int s390_image_probe(const char *buf, unsigned long len)
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{
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/* Can't reliably tell if an image is valid. Therefore give the
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* user whatever he wants.
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*/
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return 0;
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}
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const struct kexec_file_ops s390_kexec_image_ops = {
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.probe = s390_image_probe,
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.load = s390_image_load,
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#ifdef CONFIG_KEXEC_SIG
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.verify_sig = s390_verify_sig,
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#endif /* CONFIG_KEXEC_SIG */
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};
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