On Fri, Mar 05, 2021 at 11:16:33AM +0100, David Hildenbrand wrote:
> +#define OVERCOMMIT_MEMORY_PATH "/proc/sys/vm/overcommit_memory"
> +static bool map_noreserve_effective(int fd, bool readonly, bool shared)
> +{
[...]
> @@ -184,8 +251,7 @@ void *qemu_ram_mmap(int fd,
> size_t offset, total;
> void *ptr, *guardptr;
>
> - if (noreserve) {
> - error_report("Skipping reservation of swap space is not supported");
> + if (noreserve && !map_noreserve_effective(fd, shared, readonly)) {
Need to switch "shared" & "readonly"?
> return MAP_FAILED;
> }
--
Peter Xu
