[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 04/11] x86/xen: Introduce architecture dependent data for kexec/kdump
Introduce architecture dependent constants, structures and functions required by Xen kexec/kdump implementation. Signed-off-by: Daniel Kiper <daniel.kiper@xxxxxxxxxx> --- arch/x86/include/asm/xen/hypercall.h | 6 +++ arch/x86/include/asm/xen/kexec.h | 83 ++++++++++++++++++++++++++++++++++ 2 files changed, 89 insertions(+), 0 deletions(-) create mode 100644 arch/x86/include/asm/xen/kexec.h diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h index c20d1ce..e76a1b8 100644 --- a/arch/x86/include/asm/xen/hypercall.h +++ b/arch/x86/include/asm/xen/hypercall.h @@ -459,6 +459,12 @@ HYPERVISOR_hvm_op(int op, void *arg) } static inline int +HYPERVISOR_kexec_op(unsigned long op, void *args) +{ + return _hypercall2(int, kexec_op, op, args); +} + +static inline int HYPERVISOR_tmem_op( struct tmem_op *op) { diff --git a/arch/x86/include/asm/xen/kexec.h b/arch/x86/include/asm/xen/kexec.h new file mode 100644 index 0000000..3349031 --- /dev/null +++ b/arch/x86/include/asm/xen/kexec.h @@ -0,0 +1,83 @@ +/* + * Copyright (c) 2011 Daniel Kiper + * Copyright (c) 2012 Daniel Kiper, Oracle Corporation + * + * kexec/kdump implementation for Xen was written by Daniel Kiper. + * Initial work on it was sponsored by Google under Google Summer + * of Code 2011 program and Citrix. Konrad Rzeszutek Wilk from Oracle + * was the mentor for this project. + * + * Some ideas are taken from: + * - native kexec/kdump implementation, + * - kexec/kdump implementation for Xen Linux Kernel Ver. 2.6.18, + * - PV-GRUB. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _ASM_X86_XEN_KEXEC_H +#define _ASM_X86_XEN_KEXEC_H + +#include <linux/init.h> + +#define KEXEC_XEN_NO_PAGES 17 + +#define XK_MA_CONTROL_PAGE 0 +#define XK_VA_CONTROL_PAGE 1 +#define XK_MA_PGD_PAGE 2 +#define XK_VA_PGD_PAGE 3 +#define XK_MA_PUD0_PAGE 4 +#define XK_VA_PUD0_PAGE 5 +#define XK_MA_PUD1_PAGE 6 +#define XK_VA_PUD1_PAGE 7 +#define XK_MA_PMD0_PAGE 8 +#define XK_VA_PMD0_PAGE 9 +#define XK_MA_PMD1_PAGE 10 +#define XK_VA_PMD1_PAGE 11 +#define XK_MA_PTE0_PAGE 12 +#define XK_VA_PTE0_PAGE 13 +#define XK_MA_PTE1_PAGE 14 +#define XK_VA_PTE1_PAGE 15 +#define XK_MA_TABLE_PAGE 16 + +#ifndef __ASSEMBLY__ +struct xen_kexec_image { + unsigned long page_list[KEXEC_XEN_NO_PAGES]; + unsigned long indirection_page; + unsigned long start_address; +}; + +struct xen_kexec_load { + int type; + struct xen_kexec_image image; +}; + +extern unsigned int xen_kexec_control_code_size; + +extern void __init xen_init_kexec_ops(void); + +#ifdef CONFIG_X86_32 +extern void xen_relocate_kernel(unsigned long indirection_page, + unsigned long *page_list, + unsigned long start_address, + unsigned int has_pae, + unsigned int preserve_context); +#else +extern void xen_relocate_kernel(unsigned long indirection_page, + unsigned long *page_list, + unsigned long start_address, + unsigned int preserve_context); +#endif +#endif +#endif /* _ASM_X86_XEN_KEXEC_H */ -- 1.5.6.5 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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