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hv: mmu: replace dynamic memory allocation in memory

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Replace dynamic memory allocation in memory management with static memory allocation.
Since the static memory allocation can guarantee the allocation never failed, so
split_large_page and construct_pgentry don't need to return a errno any more.
Besides, the destroy_ept don't need to free page any more. Instead, it would memset
the eptp to 0 to make sure we can't walk this paging table again.

Tracked-On: #861
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
This commit is contained in:
Li, Fei1
2018-10-30 05:55:57 +08:00
committed by lijinxia
parent 9c7c0de08f
commit 0391f84c83
13 changed files with 147 additions and 236 deletions
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hypervisor/arch/x86/Kconfig
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@@ -222,7 +222,7 @@ config HV_RAM_START
config HV_RAM_SIZE
hex "Size of the RAM region used by the hypervisor"
default 0x04000000
default 0x06000000
help
A 64-bit integer indicating the size of RAM used by the hypervisor.
It is ensured at link time that the footprint of the hypervisor