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| author |   Hari Bathini <hbathini@linux.ibm.com> | 2021-02-04 17:01:10 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-02-11 23:35:07 +1100 |
| commit | 2377c92e37fe97bc5b365f55cf60f56dfc4849f5 (patch) | |
| tree | 4a246b1cdb2be32ab4f7bdb3d053ba834836517e /arch/powerpc/include/asm/kexec.h | |
| parent | powerpc/mm: Remove dcache flush from memory remove. (diff) | |
| download | linux-dev-2377c92e37fe97bc5b365f55cf60f56dfc4849f5.tar.xz linux-dev-2377c92e37fe97bc5b365f55cf60f56dfc4849f5.zip | |
powerpc/kexec_file: fix FDT size estimation for kdump kernel
On systems with large amount of memory, loading kdump kernel through
kexec_file_load syscall may fail with the below error:
"Failed to update fdt with linux,drconf-usable-memory property"
This happens because the size estimation for kdump kernel's FDT does
not account for the additional space needed to setup usable memory
properties. Fix it by accounting for the space needed to include
linux,usable-memory & linux,drconf-usable-memory properties while
estimating kdump kernel's FDT size.
Fixes: 6ecd0163d360 ("powerpc/kexec_file: Add appropriate regions for memory reserve map")
Cc: stable@vger.kernel.org # v5.9+
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/161243826811.119001.14083048209224609814.stgit@hbathini
Diffstat (limited to 'arch/powerpc/include/asm/kexec.h')
| -rw-r--r-- | arch/powerpc/include/asm/kexec.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h index 55d6ede30c19..9ab344d29a54 100644 --- a/arch/powerpc/include/asm/kexec.h +++ b/arch/powerpc/include/asm/kexec.h @@ -136,6 +136,7 @@ int load_crashdump_segments_ppc64(struct kimage *image, int setup_purgatory_ppc64(struct kimage *image, const void *slave_code, const void *fdt, unsigned long kernel_load_addr, unsigned long fdt_load_addr); +unsigned int kexec_fdt_totalsize_ppc64(struct kimage *image); int setup_new_fdt_ppc64(const struct kimage *image, void *fdt, unsigned long initrd_load_addr, unsigned long initrd_len, const char *cmdline); |