cregit-Linux how code gets into the kernel

Release 4.14 arch/s390/include/asm/kexec.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright IBM Corp. 2005
 *
 * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
 *
 */

#ifndef _S390_KEXEC_H

#define _S390_KEXEC_H

#include <asm/processor.h>
#include <asm/page.h>
/*
 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
 * I.e. Maximum page that is mapped directly into kernel memory,
 * and kmap is not required.
 */

/* Maximum physical address we can use pages from */

#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)

/* Maximum address we can reach in physical address mode */

#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)

/* Maximum address we can use for the control pages */
/* Not more than 2GB */

#define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31)

/* Allocate control page with GFP_DMA */

#define KEXEC_CONTROL_MEMORY_GFP GFP_DMA

/* Maximum address we can use for the crash control pages */

#define KEXEC_CRASH_CONTROL_MEMORY_LIMIT (-1UL)

/* Allocate one page for the pdp and the second for the code */

#define KEXEC_CONTROL_PAGE_SIZE 4096

/* Alignment of crashkernel memory */

#define KEXEC_CRASH_MEM_ALIGN HPAGE_SIZE

/* The native architecture */

#define KEXEC_ARCH KEXEC_ARCH_S390

/* Provide a dummy definition to avoid build failures. */

static inline void crash_setup_regs(struct pt_regs *newregs, struct pt_regs *oldregs) { }

Contributors

PersonTokensPropCommitsCommitProp
Andrew Morton16100.00%1100.00%
Total16100.00%1100.00%

#endif /*_S390_KEXEC_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Heiko Carstens4255.26%440.00%
Andrew Morton1722.37%110.00%
Michael Holzheu1013.16%220.00%
Martin Schwidefsky56.58%110.00%
Greg Kroah-Hartman11.32%110.00%
Huang Ying11.32%110.00%
Total76100.00%10100.00%
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