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https://github.com/projectacrn/acrn-hypervisor.git
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dc9d18a868
Add static paging table allocation API for hypervisor. Note: must configure PLATFORM_RAM_SIZE and PLATFORM_MMIO_SIZE exactly as the platform. Rename RAM_START/RAM_SIZE to HV_RAM_START/HV_RAM_SIZE for HV. Tracked-On: #861 Signed-off-by: Li, Fei1 <fei1.li@intel.com>
68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <hypervisor.h>
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#define PML4_PAGE_NUM(size) 1UL
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#define PDPT_PAGE_NUM(size) (((size) + PML4E_SIZE - 1UL) >> PML4E_SHIFT)
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#define PD_PAGE_NUM(size) (((size) + PDPTE_SIZE - 1UL) >> PDPTE_SHIFT)
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#define PT_PAGE_NUM(size) (((size) + PDE_SIZE - 1UL) >> PDE_SHIFT)
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#define DEFINE_PGTABLE_PAGE(prefix, lvl, LVL, size) \
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static struct page prefix ## lvl ## _pages[LVL ## _PAGE_NUM(size)]
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DEFINE_PGTABLE_PAGE(ppt_, pml4, PML4, CONFIG_PLATFORM_RAM_SIZE + PLATFORM_LO_MMIO_SIZE);
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DEFINE_PGTABLE_PAGE(ppt_, pdpt, PDPT, CONFIG_PLATFORM_RAM_SIZE + PLATFORM_LO_MMIO_SIZE);
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DEFINE_PGTABLE_PAGE(ppt_, pd, PD, CONFIG_PLATFORM_RAM_SIZE + PLATFORM_LO_MMIO_SIZE);
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/* ppt: pripary page table */
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static union pgtable_pages_info ppt_pages_info = {
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.ppt = {
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.pml4_base = ppt_pml4_pages,
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.pdpt_base = ppt_pdpt_pages,
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.pd_base = ppt_pd_pages,
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}
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};
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static inline uint64_t ppt_get_default_access_right(void)
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{
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return (PAGE_PRESENT | PAGE_RW | PAGE_USER);
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}
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static inline uint64_t ppt_pgentry_present(uint64_t pte)
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{
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return pte & PAGE_PRESENT;
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}
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static inline struct page *ppt_get_pml4_page(const union pgtable_pages_info *info, __unused uint64_t gpa)
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{
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struct page *page = info->ppt.pml4_base;
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(void)memset(page, 0U, PAGE_SIZE);
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return page;
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}
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static inline struct page *ppt_get_pdpt_page(const union pgtable_pages_info *info, uint64_t gpa)
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{
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struct page *page = info->ppt.pdpt_base + (gpa >> PML4E_SHIFT);
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(void)memset(page, 0U, PAGE_SIZE);
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return page;
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}
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static inline struct page *ppt_get_pd_page(const union pgtable_pages_info *info, uint64_t gpa)
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{
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struct page *page = info->ppt.pd_base + (gpa >> PDPTE_SHIFT);
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(void)memset(page, 0U, PAGE_SIZE);
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return page;
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}
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const struct memory_ops ppt_mem_ops = {
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.info = &ppt_pages_info,
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.get_default_access_right = ppt_get_default_access_right,
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.pgentry_present = ppt_pgentry_present,
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.get_pml4_page = ppt_get_pml4_page,
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.get_pdpt_page = ppt_get_pdpt_page,
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.get_pd_page = ppt_get_pd_page,
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};
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