123 lines
4.6 KiB
C
123 lines
4.6 KiB
C
/*
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* Copyright (c) 2016 MCST, Salavat Gilyazov atic@mcst.ru
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __ASM_E2K_PV_INFO_H
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#define __ASM_E2K_PV_INFO_H
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#include <linux/types.h>
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/*
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* e2k kernel general info
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*/
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/*
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* Even 32-bit applications must have big TASK_SIZE since hardware
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* stacks are placed behind the 4Gb boundary.
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*/
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/* Virtual space is splitted into two parts: user and kernel spaces. */
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/* Kernel virtual space takes high area and starts from the following base */
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#define NATIVE_KERNEL_VIRTUAL_SPACE_BASE 0x0000d00000000000
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/* direct mapping of all physical memory starts now from kernel virtual */
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/* space beginning, but cannot map all possible 2**48 bytes */
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#define NATIVE_PAGE_OFFSET NATIVE_KERNEL_VIRTUAL_SPACE_BASE
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/* Users virtual spaces take low area from 0 right up to kernel base */
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#define NATIVE_TASK_SIZE NATIVE_KERNEL_VIRTUAL_SPACE_BASE
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#ifdef CONFIG_MMU_SEP_VIRT_SPACE
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/* Users Separate Page Tables virtual base at the top of user space */
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/* 0x0000 cf80 0000 0000 */
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#define USER_VPTB_BASE_SIZE PGDIR_SIZE
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#define USER_VPTB_BASE_ADDR (NATIVE_TASK_SIZE - USER_VPTB_BASE_SIZE)
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#else /* ! CONFIG_MMU_SEP_VIRT_SPACE */
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#define USER_VPTB_BASE_SIZE 0
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#define USER_VPTB_BASE_ADDR KERNEL_VPTB_BASE_ADDR
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#endif /* CONFIG_MMU_SEP_VIRT_SPACE */
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/* virtualization support */
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#include <asm/kvm/page.h>
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#ifndef CONFIG_VIRTUALIZATION
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/* it is native kernel without any virtualization */
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#define IS_HOST_KERNEL_ADDRESS(addr) ((addr) >= NATIVE_TASK_SIZE)
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#define IS_HOST_USER_ADDRESS(addr) ((addr) < NATIVE_TASK_SIZE)
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#define IS_GUEST_KERNEL_ADDRESS(addr) false
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#define IS_GUEST_USER_ADDRESS(addr) false
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#define IS_GUEST_PHYS_ADDRESS(addr) false
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#else /* CONFIG_VIRTUALIZATION */
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/* it is host kernel with virtualization support */
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/* or paravirtualized host and guest kernel */
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/* or pure guest kernel (not paravirtualized based on pv_ops) */
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#define HOST_TASK_SIZE (HOST_PAGE_OFFSET)
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#define GUEST_TASK_SIZE (GUEST_PAGE_OFFSET)
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#define HOST_TASK_TOP HOST_TASK_SIZE
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#define GUEST_TASK_TOP GUEST_TASK_SIZE
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#define BOOT_HOST_TASK_SIZE HOST_TASK_SIZE
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#define BOOT_GUEST_TASK_SIZE GUEST_TASK_SIZE
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#define IS_HOST_KERNEL_ADDRESS(addr) ((addr) >= HOST_TASK_SIZE)
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#define IS_HOST_USER_ADDRESS(addr) ((addr) < HOST_TASK_SIZE)
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#define IS_GUEST_KERNEL_ADDRESS(addr) ((addr) >= GUEST_TASK_SIZE && \
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(addr) < HOST_TASK_SIZE)
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#define IS_GUEST_USER_ADDRESS(addr) ((addr) < GUEST_TASK_SIZE)
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#define IS_GUEST_PHYS_ADDRESS(addr) \
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((e2k_addr_t)(addr) >= GUEST_PAGE_OFFSET && \
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(e2k_addr_t)(addr) < GUEST_PAGE_OFFSET + MAX_PM_SIZE)
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#endif /* ! CONFIG_VIRTUALIZATION */
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#ifdef CONFIG_PARAVIRT_GUEST
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/* it is paravirtualized host and guest kernel */
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#define is_paravirt_kernel() true /* it is paravirtualized */
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/* host and guest kernel */
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#include <asm/paravirt/pv_info.h>
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#elif defined(CONFIG_KVM_GUEST_KERNEL)
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/* pure guest kernel (not paravirtualized) */
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#define is_paravirt_kernel() false
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#include <asm/kvm/guest/pv_info.h>
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#else /* ! CONFIG_PARAVIRT_GUEST && ! CONFIG_KVM_GUEST_KERNEL */
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/* it is native kernel without virtualization support */
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/* or host kernel with virtualization support */
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#define TASK_SIZE NATIVE_TASK_SIZE
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#define paravirt_enabled() (IS_HV_GM() || false)
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#define boot_paravirt_enabled() (BOOT_IS_HV_GM() || false)
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#define is_paravirt_kernel() false
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#ifndef CONFIG_VIRTUALIZATION
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/* it is native kernel without virtualization support */
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#define KERNEL_VIRTUAL_SPACE_BASE NATIVE_KERNEL_VIRTUAL_SPACE_BASE
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#define PAGE_OFFSET NATIVE_PAGE_OFFSET
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#define VMALLOC_START NATIVE_VMALLOC_START
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#define VMALLOC_END NATIVE_VMALLOC_END
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#define VMEMMAP_START NATIVE_VMEMMAP_START
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#define VMEMMAP_END NATIVE_VMEMMAP_END
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#define BOOT_KERNEL_VIRTUAL_SPACE_BASE KERNEL_VIRTUAL_SPACE_BASE
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#define BOOT_PAGE_OFFSET PAGE_OFFSET
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#define BOOT_TASK_SIZE TASK_SIZE
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#endif /* ! CONFIG_VIRTUALIZATION */
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#endif /* CONFIG_PARAVIRT_GUEST */
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#define kernel_is_privileged() (!paravirt_enabled() || IS_HV_GM())
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#endif /* __ASM_E2K_PV_INFO_H */
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