mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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8ffe6fc67a
As ACRN prepares to support servers with large amounts of memory current logic to allocate space for 4K pages of EPT at compile time will increase the size of .bss section of ACRN binary. Bootloaders could run into a situation where they cannot find enough contiguous space to load ACRN binary under 4GB, which is typically heavily fragmented with E820 types Reserved, ACPI data, 32-bit PCI hole etc. This patch does the following 1) Works only for "direct" mode of vboot 2) reserves space for 4K pages of EPT, after boot by parsing platform E820 table, for all types of VMs. Size comparison: w/o patch Size of DRAM Size of .bss 48 GB 0xe1bbc98 (~226 MB) 128 GB 0x222abc98 (~548 MB) w/ patch Size of DRAM Size of .bss 48 GB 0x1991c98 (~26 MB) 128 GB 0x1a81c98 (~28 MB) Tracked-On: #4563 Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com> |
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| .. | ||
| acpi_parser | ||
| arch/x86 | ||
| boot | ||
| bsp/ld | ||
| common | ||
| debug | ||
| dm | ||
| hw | ||
| include | ||
| lib | ||
| pre_build | ||
| release | ||
| scenarios | ||
| scripts | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README.rst | ||
ACRN Hypervisor ############### The open source `Project ACRN`_ defines a device hypervisor reference stack and an architecture for running multiple software subsystems, managed securely, on a consolidated system by means of a virtual machine manager. It also defines a reference framework implementation for virtual device emulation, called the "ACRN Device Model". The ACRN Hypervisor is a Type 1 reference hypervisor stack, running directly on the bare-metal hardware, and is suitable for a variety of IoT and embedded device solutions. The ACRN hypervisor addresses the gap that currently exists between datacenter hypervisors, and hard partitioning hypervisors. The ACRN hypervisor architecture partitions the system into different functional domains, with carefully selected guest OS sharing optimizations for IoT and embedded devices. You can find out more about Project ACRN on the `Project ACRN documentation`_ website. .. _`Project ACRN`: https://projectacrn.org .. _`ACRN Hypervisor`: https://github.com/projectacrn/acrn-hypervisor .. _`Project ACRN documentation`: https://projectacrn.github.io/