diff options
| author | Ben Collins <bcollins@kernel.org> | 2025-04-21 22:36:46 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-03-19 16:08:11 +0100 |
| commit | d5697cf3b91d8917f739efe7e0fa0630cb694eea (patch) | |
| tree | 4280be0847da1ec28163d9c3de074a4784e8f825 | |
| parent | b3c074a394c66bbc4943d2d2bab546f7959365f5 (diff) | |
kexec: Include kernel-end even without crashkernel
[ Upstream commit 38c64dfe0af12778953846df5f259e913275cfe5 ]
Certain versions of kexec don't even work without kernel-end being
added to the device-tree. Add it even if crash-kernel is disabled.
Signed-off-by: Ben Collins <bcollins@kernel.org>
Reviewed-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/2025042122-inescapable-mandrill-8a5ff2@boujee-and-buff
Stable-dep-of: 20197b967a6a ("powerpc/kexec/core: use big-endian types for crash variables")
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/powerpc/kexec/core.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/arch/powerpc/kexec/core.c b/arch/powerpc/kexec/core.c index d1a2d755381c..cf803d09c8e5 100644 --- a/arch/powerpc/kexec/core.c +++ b/arch/powerpc/kexec/core.c @@ -22,6 +22,8 @@ #include <asm/setup.h> #include <asm/firmware.h> +#define cpu_to_be_ulong __PASTE(cpu_to_be, BITS_PER_LONG) + #ifdef CONFIG_CRASH_DUMP void machine_crash_shutdown(struct pt_regs *regs) { @@ -136,17 +138,10 @@ int __init overlaps_crashkernel(unsigned long start, unsigned long size) } /* Values we need to export to the second kernel via the device tree. */ -static phys_addr_t kernel_end; static phys_addr_t crashk_base; static phys_addr_t crashk_size; static unsigned long long mem_limit; -static struct property kernel_end_prop = { - .name = "linux,kernel-end", - .length = sizeof(phys_addr_t), - .value = &kernel_end, -}; - static struct property crashk_base_prop = { .name = "linux,crashkernel-base", .length = sizeof(phys_addr_t), @@ -165,8 +160,6 @@ static struct property memory_limit_prop = { .value = &mem_limit, }; -#define cpu_to_be_ulong __PASTE(cpu_to_be, BITS_PER_LONG) - static void __init export_crashk_values(struct device_node *node) { /* There might be existing crash kernel properties, but we can't @@ -190,6 +183,15 @@ static void __init export_crashk_values(struct device_node *node) mem_limit = cpu_to_be_ulong(memory_limit); of_update_property(node, &memory_limit_prop); } +#endif /* CONFIG_CRASH_RESERVE */ + +static phys_addr_t kernel_end; + +static struct property kernel_end_prop = { + .name = "linux,kernel-end", + .length = sizeof(phys_addr_t), + .value = &kernel_end, +}; static int __init kexec_setup(void) { @@ -200,16 +202,17 @@ static int __init kexec_setup(void) return -ENOENT; /* remove any stale properties so ours can be found */ - of_remove_property(node, of_find_property(node, kernel_end_prop.name, NULL)); + of_remove_property(node, of_find_property(node, kernel_end_prop.name, + NULL)); /* information needed by userspace when using default_machine_kexec */ kernel_end = cpu_to_be_ulong(__pa(_end)); of_add_property(node, &kernel_end_prop); +#ifdef CONFIG_CRASH_RESERVE export_crashk_values(node); - +#endif of_node_put(node); return 0; } late_initcall(kexec_setup); -#endif /* CONFIG_CRASH_RESERVE */ |