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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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593e537b93
The userspace kexec-tools need to know the location of the htab on non-lpar machines, as well as the end of the kernel. Export via the device tree. NB. This patch has been updated to use "linux,x" property names. You may need to update your kexec-tools to match. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
#ifndef _ASM_POWERPC_KEXEC_H
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#define _ASM_POWERPC_KEXEC_H
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/*
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* Maximum page that is mapped directly into kernel memory.
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* XXX: Since we copy virt we can use any page we allocate
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*/
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#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
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/*
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* Maximum address we can reach in physical address mode.
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* XXX: I want to allow initrd in highmem. Otherwise set to rmo on LPAR.
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*/
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#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
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/* Maximum address we can use for the control code buffer */
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#ifdef __powerpc64__
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#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
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#else
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/* TASK_SIZE, probably left over from use_mm ?? */
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#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
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#endif
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#define KEXEC_CONTROL_CODE_SIZE 4096
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/* The native architecture */
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#ifdef __powerpc64__
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#define KEXEC_ARCH KEXEC_ARCH_PPC64
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#else
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#define KEXEC_ARCH KEXEC_ARCH_PPC
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#endif
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#ifndef __ASSEMBLY__
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#define MAX_NOTE_BYTES 1024
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typedef u32 note_buf_t[MAX_NOTE_BYTES / sizeof(u32)];
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extern note_buf_t crash_notes[];
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#ifdef __powerpc64__
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extern void kexec_smp_wait(void); /* get and clear naca physid, wait for
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master to copy new code to 0 */
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extern void __init kexec_setup(void);
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#else
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struct kimage;
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extern void machine_kexec_simple(struct kimage *image);
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#endif
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#endif /* ! __ASSEMBLY__ */
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#endif /* _ASM_POWERPC_KEXEC_H */
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