On Wed, Jun 09, 2021 at 11:29:15AM -0700, Vivek Kasireddy wrote:
> If the VMM's (Qemu) memory backend is backed up by memfd + Hugepages
> (hugetlbfs and not THP), we have to first find the hugepage(s) where
> the Guest allocations are located and then extract the regular 4k
> sized subpages from th
If the VMM's (Qemu) memory backend is backed up by memfd + Hugepages
(hugetlbfs and not THP), we have to first find the hugepage(s) where
the Guest allocations are located and then extract the regular 4k
sized subpages from them.
v2: Ensure that the subpage and hugepage offsets are calculated corr
Hi,
> + hpage = find_get_page_flags(
checkpatch doesn't like that:
-:76: CHECK:OPEN_ENDED_LINE: Lines should not end with a '('
> + page = shmem_read_mapping_page(
Same here.
take care,
Gerd
On Tue, Jun 08, 2021 at 10:35:58AM -0700, Dongwon Kim wrote:
> I see the number of entries in the list often exceeds list_limit
> currently hardcoded to 1024 for full HD scanout resource (==
> 1920*1080*4 bytes). Can we include a change to increase it to something
> like 4096 or higher in this patc
I see the number of entries in the list often exceeds list_limit
currently hardcoded to 1024 for full HD scanout resource (==
1920*1080*4 bytes). Can we include a change to increase it to something
like 4096 or higher in this patch?
On Fri, Jun 04, 2021 at 01:59:39PM -0700, Vivek Kasireddy wrote:
If the VMM's (Qemu) memory backend is backed up by memfd + Hugepages
(hugetlbfs and not THP), we have to first find the hugepage(s) where
the Guest allocations are located and then extract the regular 4k
sized subpages from them.
v2: Ensure that the subpage and hugepage offsets are calculated corr
Hi,
> for (pgidx = 0; pgidx < pgcnt; pgidx++) {
> + if (is_file_hugepages(memfd)) {
> + hpage = find_get_page_flags(
> + file_inode(memfd)->i_mapping,
> +
If the VMM's (Qemu) memory backend is backed up by memfd + Hugepages
(hugetlbfs and not THP), we have to first find the hugepage(s) where
the Guest allocations are located and then extract the regular 4k
sized subpages from them.
v2: Ensure that the subpage offsets are calculated correctly when th
Hi,
> + if (is_file_hugepages(memfd)) {
> + hpstate = hstate_file(memfd);
> + pgoff = list[i].offset >> huge_page_shift(hpstate);
> + subpgoff = (list[i].offset &
> + ~huge_page_mask(hpstate))
If the VMM's (Qemu) memory backend is backed up by memfd + Hugepages
(hugetlbfs and not THP), we have to first find the hugepage(s) where
the Guest allocations are located and then extract the regular 4k
sized subpages from them.
Cc: Gerd Hoffmann
Signed-off-by: Vivek Kasireddy
---
drivers/dma-
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