Re: [PATCH v2 1/4] nitro_enclaves: merge contiguous physical memory regions

From: Greg KH
Date: Tue Sep 21 2021 - 11:20:41 EST


On Tue, Sep 21, 2021 at 11:10:36PM +0800, Longpeng(Mike) wrote:
> There can be cases when there are more memory regions that need to be
> set for an enclave than the maximum supported number of memory regions
> per enclave. One example can be when the memory regions are backed by 2
> MiB hugepages (the minimum supported hugepage size).
>
> Let's merge the adjacent regions if they are physical contiguous. This
> way the final number of memory regions is less than before merging and
> could potentially avoid reaching maximum.
>
> Signed-off-by: Longpeng(Mike) <longpeng2@xxxxxxxxxx>
> ---
> drivers/virt/nitro_enclaves/ne_misc_dev.c | 87 ++++++++++++++++++++-----------
> 1 file changed, 58 insertions(+), 29 deletions(-)
>

What changed from v1?