diff options
Diffstat (limited to 'gitlab/issues_text/target_arm/host_missing/accel_TCG/2183')
| -rw-r--r-- | gitlab/issues_text/target_arm/host_missing/accel_TCG/2183 | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/gitlab/issues_text/target_arm/host_missing/accel_TCG/2183 b/gitlab/issues_text/target_arm/host_missing/accel_TCG/2183 deleted file mode 100644 index 937cfc0df..000000000 --- a/gitlab/issues_text/target_arm/host_missing/accel_TCG/2183 +++ /dev/null @@ -1,20 +0,0 @@ -aarch-64 emulation much slower since release 8.1.5 (issue also present on 8.2.1) -Description of problem: -Since QEMU 8.1.5 our aarch64 based emulation got much slower. We use a linux 5.4 kernel which we cross-compile with the ARM toolchain. Things that are noticable: -- Boot time got a lot longer -- All memory accesses seem to take 3x longer (can be verified by e.g. executing below script, address does not matter): -``` -date -for i in $(seq 0 1000); do - devmem 0x200000000 2>/dev/null -done -date -``` -Steps to reproduce: -Just boot an ARM based kernel on the virt machine and execute above script. -Additional information: -I've tried reproducing the issue on the master branch. There the issue is not present. It only seems to be present on releases 8.1.5 and 8.2.1. - -I've narrowed the problem down to following commit on the 8.2 branch (@bonzini): ef74024b76bf285e247add8538c11cb3c7399a1a accel/tcg: Revert mapping of PCREL translation block to multiple virtual addresses. - -Let me know if any other information / tests are required. |