Re: [PATCH v1 9/9] hostmem: wire up RAM_NORESERVE via "reserve" property

[Peter Xu]

On Tue, Feb 09, 2021 at 02:49:39PM +0100, David Hildenbrand wrote:
> Let's provide a way to control the use of RAM_NORESERVE via memory
> backends using the "reserve" property which defaults to true (old
> behavior).
> 
> Only POSIX supports setting the flag (and Linux support is checked at
> runtime, depending on the setting of "/proc/sys/vm/overcommit_memory").
> Windows will bail out.
> 
> The target use case is virtio-mem, which dynamically exposes memory
> inside a large, sparse memory area to the VM. This essentially allows
> avoiding to set "/proc/sys/vm/overcommit_memory == 0") when using
> virtio-mem and also supporting hugetlbfs in the future.
> 
> Signed-off-by: David Hildenbrand <david@redhat.com>

Reviewed-by: Peter Xu <peterx@redhat.com>

-- 
Peter Xu