Displaying 3 results from an estimated 3 matches for "alloc_empty_pages".
2013 May 16
5
xc_map_foreign_bulk() memory leak in ARM version?
...map some memory from domU to dom0, after unmap()
for previous returned address - memory is not freed at all.
Let''s look at call stack:
xc_map_foreign() ->
linux_privcmd_map_foreign_bulk() ->
{
addr = mmap(fd);
ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH_V2 );
} ->
alloc_empty_pages() ->
alloc_xenballoned_pages();
So, I think that unmap(addr) must call free_xenballoned_pages(), but this
doesn''t happen. =(
Let me note, that mmap() knows about privcmd_close() function, and it is
the place where free_xenballoned_pages() is called, So we have that unmap()
does...
2013 Dec 04
5
[PATCH] arm: xen: foreign mapping PTEs are special.
These mappings are in fact special and require special handling in privcmd,
which already exists. Failure to mark the PTE as special on arm64 causes all sorts of bad PTE fun.
x86 already gets this correct.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: xen-devel@lists.xenproject.org
---
arch/arm/xen/enlighten.c |
2012 Oct 04
49
[RFC 00/14] arm: implement ballooning and privcmd foreign mappings based on x86 PVH
This series implements ballooning for Xen on ARM and builds and Mukesh''s
PVH privcmd stuff to implement foreign page mapping on ARM, replacing
the old "HACK: initial (very hacky) XENMAPSPACE_gmfn_foreign" patch.
The baseline is a bit complex, it is basically Stefano''s xenarm-forlinus
branch (commit bbd6eb29214e) merged with Konrad''s linux-next-pvh branch