github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2026-06-06 09:06:30 +00:00
Code Issues Projects Releases Wiki Activity

hv: do EPT mapping only for physical memory backed GPA on pre-launched VMs

Browse Source 
Currently for pre-launched VMs, HV intends to do EPT mapping for all GPA
space, which implies that it wastes HPA to back PCI hole and other vE820
entries that are not backed by physical memory.

This patch solves this issue and fixes ve820 entries whose length is not
aligned to 4K, and changes the lowmem entry's start GPA from 1MB to 2MB.

Tracked-On: #2587
Signed-off-by: Zide Chen <zide.chen@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Zide Chen
2019-02-26 23:26:55 -08:00
committed by wenlingz
parent da14c96135
commit 2b35c07857
3 changed files with 62 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
hypervisor/arch/x86/configs/dnv-cb2/ve820.c
View File

@@ -7,33 +7,33 @@
#include <e820.h>
const struct e820_entry ve820_entry[E820_MAX_ENTRIES] = {
{ /* 0 to mptable */
{ /* usable RAM under 1MB */
.baseaddr = 0x0UL,
.length = 0xEFFFFUL,
.length = 0xF0000UL, /* 960KB */
.type = E820_TYPE_RAM
},
{ /* mptable 65536U */
.baseaddr = 0xF0000UL,
.length = 0x10000UL,
{ /* mptable */
.baseaddr = 0xF0000UL, /* 960KB */
.length = 0x10000UL, /* 16KB */
.type = E820_TYPE_RESERVED
},
{ /* mptable to lowmem */
.baseaddr = 0x100000UL,
.length = 0x7FF00000UL,
{ /* lowmem */
.baseaddr = 0x200000UL, /* 2MB */
.length = 0x7FE00000UL, /* 2046MB */
.type = E820_TYPE_RAM
},
{ /* lowmem to PCI hole */
.baseaddr = 0x80000000UL,
.length = 0x40000000UL,
{ /* between lowmem and PCI hole */
.baseaddr = 0x80000000UL, /* 2GB */
.length = 0x40000000UL, /* 1GB */
.type = E820_TYPE_RESERVED
},
{ /* PCI hole to 4G */
.baseaddr = 0xe0000000UL,
.length = 0x20000000UL,
{ /* between PCI hole and 4GB */
.baseaddr = 0xe0000000UL, /* 3.5GB */
.length = 0x20000000UL, /* 512MB */
.type = E820_TYPE_RESERVED
},
};