[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH 0/2] Introduce reserved heap
The reserved heap, or statically configured heap, refers to parts of RAM reserved in the beginning for heap. Like the static memory allocation, such reserved heap regions are reserved by configuration in the device tree using physical address ranges. This feature is useful to run Xen on Arm MPU systems, where only a finite number of memory protection regions are available. The limited number of protection regions places requirement on planning the use of MPU protection regions and one or more MPU protection regions needs to be reserved only for heap. The first patch introduces the reserved heap and the device tree parsing code. The second patch adds the implementation of the reserved heap pages handling in boot and heap allocator for Arm. Changes from RFC to v1: - Rename the terminology to reserved heap. - Rebase on top of latest `setup_mm()` changes. - Added Arm32 logic in `setup_mm()`. Henry Wang (2): docs, xen/arm: Introduce reserved heap memory xen/arm: Handle reserved heap pages in boot and heap allocator docs/misc/arm/device-tree/booting.txt | 46 ++++++++++++++++ xen/arch/arm/bootfdt.c | 51 +++++++++++++---- xen/arch/arm/domain_build.c | 5 +- xen/arch/arm/include/asm/setup.h | 3 + xen/arch/arm/setup.c | 79 +++++++++++++++++++++------ 5 files changed, 156 insertions(+), 28 deletions(-) -- 2.17.1
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