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hv: mmu: add static paging table allocation for hypervisor

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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>
This commit is contained in:
Li, Fei1
2018-10-29 23:28:32 +08:00
committed by lijinxia
parent 74a5eec3a7
commit dc9d18a868
12 changed files with 163 additions and 39 deletions
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67
hypervisor/arch/x86/page.c Normal file
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/*
* Copyright (C) 2018 Intel Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <hypervisor.h>
#define PML4_PAGE_NUM(size) 1UL
#define PDPT_PAGE_NUM(size) (((size) + PML4E_SIZE - 1UL) >> PML4E_SHIFT)
#define PD_PAGE_NUM(size) (((size) + PDPTE_SIZE - 1UL) >> PDPTE_SHIFT)
#define PT_PAGE_NUM(size) (((size) + PDE_SIZE - 1UL) >> PDE_SHIFT)
#define DEFINE_PGTABLE_PAGE(prefix, lvl, LVL, size) \
static struct page prefix ## lvl ## _pages[LVL ## _PAGE_NUM(size)]
DEFINE_PGTABLE_PAGE(ppt_, pml4, PML4, CONFIG_PLATFORM_RAM_SIZE + PLATFORM_LO_MMIO_SIZE);
DEFINE_PGTABLE_PAGE(ppt_, pdpt, PDPT, CONFIG_PLATFORM_RAM_SIZE + PLATFORM_LO_MMIO_SIZE);
DEFINE_PGTABLE_PAGE(ppt_, pd, PD, CONFIG_PLATFORM_RAM_SIZE + PLATFORM_LO_MMIO_SIZE);
/* ppt: pripary page table */
static union pgtable_pages_info ppt_pages_info = {
.ppt = {
.pml4_base = ppt_pml4_pages,
.pdpt_base = ppt_pdpt_pages,
.pd_base = ppt_pd_pages,
}
};
static inline uint64_t ppt_get_default_access_right(void)
{
return (PAGE_PRESENT | PAGE_RW | PAGE_USER);
}
static inline uint64_t ppt_pgentry_present(uint64_t pte)
{
return pte & PAGE_PRESENT;
}
static inline struct page *ppt_get_pml4_page(const union pgtable_pages_info *info, __unused uint64_t gpa)
{
struct page *page = info->ppt.pml4_base;
(void)memset(page, 0U, PAGE_SIZE);
return page;
}
static inline struct page *ppt_get_pdpt_page(const union pgtable_pages_info *info, uint64_t gpa)
{
struct page *page = info->ppt.pdpt_base + (gpa >> PML4E_SHIFT);
(void)memset(page, 0U, PAGE_SIZE);
return page;
}
static inline struct page *ppt_get_pd_page(const union pgtable_pages_info *info, uint64_t gpa)
{
struct page *page = info->ppt.pd_base + (gpa >> PDPTE_SHIFT);
(void)memset(page, 0U, PAGE_SIZE);
return page;
}
const struct memory_ops ppt_mem_ops = {
.info = &ppt_pages_info,
.get_default_access_right = ppt_get_default_access_right,
.pgentry_present = ppt_pgentry_present,
.get_pml4_page = ppt_get_pml4_page,
.get_pdpt_page = ppt_get_pdpt_page,
.get_pd_page = ppt_get_pd_page,
};