On 05.03.21 16:42, Peter Xu wrote:
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"?
Indeed, interestingly it has the same effect (as we don't have anonymous read-only memory in QEMU :) )
(wouldn't have happened with flags ... hmm) Thanks! -- Thanks, David / dhildenb
