So far, VM reported only the number of bytes actually allocated to
each process. This patch adds two additional fields: the sum of the
byte sizes of all the virtual address ranges in the process, and that
number minus the part of the process stack that is not actually
mapped in. Unfortunately, we have to guess where the process stack
is, so the second field is not necessarily accurate.
Change-Id: If9e07c20e8588bc3e11601ec79bdcebc06eba6ee
Two bugs fixed wrt vm restartability.
. make sure pagetable data is only allocated
using dynamic data instead of static spare pages
(bootstrap pages). They are needed for bootstrap
but now repeat some of the initialization so only
dynamic data remains. This solves the problem of
physical addresses changing (as static pages are
re-allocated for the new instance) after update.
. pt_ptalloc has to be specified in bytes instead of
pde slot numbers. leaving pt_pt NULL causes mapping
transfers to fail because NULL happens to be mapped in
then and updates then happen there.
. added some sanity checks against the above happening.
The new state is that VM can update many times, but the system
isn't fully reliable afterwards yet.
Change-Id: I7313602c740cdae8590589132291116ed921aed7
Fix for problems reported by Alejandro Hernández:
. VM unmap: handle case where there is no nextvr
Fixes for problems found by running Melkor ELF fuzzing tool:
. VM: better handle case where region prealloc fails by
freeing memory that was allocated so far
. MFS fs_readwrite: EOF check should happen for read and
peek requests, not just read
This fixes#4.
Change-Id: I2adf4eebdfb4c48a297beff0478eed5c917a53a4
