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From d665fa8c7cb6fa6713bad2633b9cccbad98245bc Mon Sep 17 00:00:00 2001
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Message-Id: <d665fa8c7cb6fa6713bad2633b9cccbad98245bc.1431592766.git.panand@redhat.com>
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In-Reply-To: <1fb6841aa15407dbf371589d7abca7bc2d35815c.1431592766.git.panand@redhat.com>
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References: <1fb6841aa15407dbf371589d7abca7bc2d35815c.1431592766.git.panand@redhat.com>
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From: Geoff Levand <geoff@infradead.org>
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Date: Fri, 17 Apr 2015 10:54:55 -0700
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Subject: [PATCH 04/17] arm64: Add support for kexec --lite option
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WARNING: This implementation uses kernel feature not yet merged upstream. In
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the future I may convert this to use a minimal purgatory that is just a
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trampoline.
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---
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kexec/arch/arm64/include/arch/options.h | 2 +-
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kexec/arch/arm64/kexec-arm64.c | 8 +++-----
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2 files changed, 4 insertions(+), 6 deletions(-)
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diff --git a/kexec/arch/arm64/include/arch/options.h b/kexec/arch/arm64/include/arch/options.h
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index 903b4a1fbd7f..afe3e9827ff3 100644
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--- a/kexec/arch/arm64/include/arch/options.h
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+++ b/kexec/arch/arm64/include/arch/options.h
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@@ -29,7 +29,7 @@ static const char arm64_opts_usage[] __attribute__ ((unused)) =
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" --command-line=STRING Set the kernel command line to STRING.\n"
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" --dtb=FILE Use FILE as the device tree blob.\n"
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" --initrd=FILE Use FILE as the kernel initial ramdisk.\n"
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-" --lite Fast reboot, no memory integrity checks - currently NOT SUPPORTED.\n");
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+" --lite Fast reboot, no memory integrity checks.\n"
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" --port=ADDRESS Purgatory output to port ADDRESS.\n"
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" --ramdisk=FILE Use FILE as the kernel initial ramdisk.\n"
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" --reuse-cmdline Use command line arg of primary kernel.\n";
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diff --git a/kexec/arch/arm64/kexec-arm64.c b/kexec/arch/arm64/kexec-arm64.c
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index 22d70244f8db..6398e55fe575 100644
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--- a/kexec/arch/arm64/kexec-arm64.c
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+++ b/kexec/arch/arm64/kexec-arm64.c
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@@ -96,7 +96,6 @@ int arch_process_options(int argc, char **argv)
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break;
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case OPT_LITE:
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arm64_opts.lite = 1;
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- fprintf(stderr, "kexec: --lite option currently NOT SUPPORTED.\n");
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break;
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case OPT_PORT:
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arm64_opts.port = strtoull(optarg, NULL, 0);
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@@ -702,10 +701,9 @@ int arm64_load_other_segments(struct kexec_info *info,
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add_segment_phys_virt(info, initrd_buf, initrd_size,
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initrd_base, initrd_size, 0);
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- if (arm64_opts.lite) {
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- fprintf(stderr, "kexec: --lite option currently NOT SUPPORTED.\n");
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- return -ENOSYS;
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- } else {
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+ if (arm64_opts.lite)
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+ info->entry = (void *)kernel_entry;
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+ else {
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result = build_elf_rel_info(purgatory, purgatory_size, &ehdr,
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0);
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--
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2.1.0
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