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Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/1650.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_missing/1650.toml | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/1650.toml b/gitlab/issues/target_missing/host_missing/accel_missing/1650.toml deleted file mode 100644 index 9f06794f..00000000 --- a/gitlab/issues/target_missing/host_missing/accel_missing/1650.toml +++ /dev/null @@ -1,22 +0,0 @@ -id = 1650 -title = "Consider doing runtime detection of MAP_FIXED_NOREPLACE" -state = "closed" -created_at = "2023-05-14T03:21:41.028Z" -closed_at = "2023-05-14T03:46:50.136Z" -labels = [] -url = "https://gitlab.com/qemu-project/qemu/-/issues/1650" -host-os = "AOSC OS 10.1.1 \"Jinkela\"" -host-arch = "amd64" -qemu-version = "7.2.0" -guest-os = "n/a" -guest-arch = "n/a" -description = """``` -qemu-i386-static: Unable to reserve 0xfffff000 bytes of virtual address space at 0x1000 (Operation not supported) for use as guest address space (check your virtual memory ulimit setting, min_mmap_addr or reserve less using -R option) -``` -strace says -``` - mmap(0x1000, 4294963200, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE|MAP_FIXED_NOREPLACE, -1, 0) = -1 EOPNOTSUPP (Operation not supported) -```""" -reproduce = """1. `apt install qemu-i386-static 32subsystem` -2. `strace qemu-i386-static /opt/32/bin/as`""" -additional = """Repeating the strace call in a minimal C program gives the same errno as expected -- the kernel is only 4.4. The problem here is that qemu only does `MAP_FIXED_NOREPLACE` feature detection at build-time via a `#ifndef` and even that behavior is poorly documented. Maybe do something at runtime?""" |