summary refs log tree commit diff stats
path: root/results/classifier/118/kernel/1650
diff options
context:
space:
mode:
Diffstat (limited to 'results/classifier/118/kernel/1650')
-rw-r--r--results/classifier/118/kernel/165044
1 files changed, 0 insertions, 44 deletions
diff --git a/results/classifier/118/kernel/1650 b/results/classifier/118/kernel/1650
deleted file mode 100644
index af1d56bc..00000000
--- a/results/classifier/118/kernel/1650
+++ /dev/null
@@ -1,44 +0,0 @@
-i386: 0.969
-kernel: 0.938
-x86: 0.893
-performance: 0.872
-device: 0.836
-architecture: 0.812
-graphic: 0.772
-network: 0.750
-semantic: 0.731
-debug: 0.675
-virtual: 0.643
-PID: 0.551
-vnc: 0.487
-permissions: 0.483
-hypervisor: 0.428
-mistranslation: 0.424
-TCG: 0.420
-VMM: 0.413
-risc-v: 0.390
-ppc: 0.367
-boot: 0.348
-register: 0.318
-peripherals: 0.315
-user-level: 0.299
-socket: 0.283
-KVM: 0.226
-arm: 0.209
-files: 0.130
-assembly: 0.120
-
-Consider doing runtime detection of MAP_FIXED_NOREPLACE
-Description of problem:
-```
-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)
-```
-Steps to reproduce:
-1. `apt install qemu-i386-static 32subsystem`
-2. `strace qemu-i386-static /opt/32/bin/as`
-Additional information:
-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?