Add Copy on Write support on the host for nanvix#1345
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jsturtevant wants to merge 1 commit intohyperlight-dev:mainfrom
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Add Copy on Write support on the host for nanvix#1345jsturtevant wants to merge 1 commit intohyperlight-dev:mainfrom
jsturtevant wants to merge 1 commit intohyperlight-dev:mainfrom
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Signed-off-by: James Sturtevant <jsturtevant@gmail.com>
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fixes: #1334
Hyperlight's map_file_cow creates READ+EXECUTE memory regions (no WRITE). Nanvix's VFS/FAT32 layer requires writable memory for the RAMFS image. Currently, Nanvix works around this by copying the entire RAMFS image from the read-only MMIO region to a heap-allocated buffer on Hyperlight (see nanvix/nanvix#1729).