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| author |   Hari Bathini <hbathini@linux.ibm.com> | 2020-07-29 17:10:16 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-07-29 23:47:53 +1000 |
| commit | b8e55a3e5c208862eacded5aad822184f89f85d9 (patch) | |
| tree | e90ba99f2146c60a94aeb7efff07e7655f88ad70 /arch/powerpc/include/asm/kexec.h | |
| parent | powerpc/kexec_file: Add helper functions for getting memory ranges (diff) | |
| download | linux-dev-b8e55a3e5c208862eacded5aad822184f89f85d9.tar.xz linux-dev-b8e55a3e5c208862eacded5aad822184f89f85d9.zip | |
powerpc/kexec_file: Avoid stomping memory used by special regions
crashkernel region could have an overlap with special memory regions
like OPAL, RTAS, TCE table & such. These regions are referred to as
excluded memory ranges. Setup these ranges during image probe in order
to avoid them while finding the buffer for different kdump segments.
Override arch_kexec_locate_mem_hole() to locate a memory hole taking
these ranges into account.
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/159602281047.575379.6636807148335160795.stgit@hbathini
Diffstat (limited to 'arch/powerpc/include/asm/kexec.h')
| -rw-r--r-- | arch/powerpc/include/asm/kexec.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h index 9b3feef55aaa..639f31e13593 100644 --- a/arch/powerpc/include/asm/kexec.h +++ b/arch/powerpc/include/asm/kexec.h @@ -100,14 +100,16 @@ void relocate_new_kernel(unsigned long indirection_page, unsigned long reboot_co #ifdef CONFIG_KEXEC_FILE extern const struct kexec_file_ops kexec_elf64_ops; -#ifdef CONFIG_IMA_KEXEC #define ARCH_HAS_KIMAGE_ARCH struct kimage_arch { + struct crash_mem *exclude_ranges; + +#ifdef CONFIG_IMA_KEXEC phys_addr_t ima_buffer_addr; size_t ima_buffer_size; -}; #endif +}; int setup_purgatory(struct kimage *image, const void *slave_code, const void *fdt, unsigned long kernel_load_addr, @@ -125,6 +127,7 @@ int setup_new_fdt_ppc64(const struct kimage *image, void *fdt, unsigned long initrd_load_addr, unsigned long initrd_len, const char *cmdline); #endif /* CONFIG_PPC64 */ + #endif /* CONFIG_KEXEC_FILE */ #else /* !CONFIG_KEXEC_CORE */ |