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Diffstat (limited to 'results/scraper/launchpad-without-comments/1838277')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1838277 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1838277 b/results/scraper/launchpad-without-comments/1838277 new file mode 100644 index 000000000..1d7190d95 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1838277 @@ -0,0 +1,21 @@ +qemu-system-aarch64: regression in 3.1: breakpoint instructions always routed to EL_D even when current EL is higher + +Affects 3.1.0 (latest stable release) and latest commit (893dc8300c80e3dc32f31e968cf7aa0904da50c3) but did *not* affect 2.11 (qemu from bionic ubuntu LTS). + +With the following code and shell commands: + +test.s: + +.text +mov x0, #0x60000000 +msr vbar_el2, x0 +dsb sy +isb sy + +$ aarch64-none-elf-as test.s -o test.o +$ aarch64-none-elf-objcopy -S -O binary test.o test.bin +$ qemu-system-aarch64 -nographic -machine virt,virtualization=on -cpu cortex-a57 -kernel test.bin -s -S + +vbar_el2 is still 0 after the code, instead of being the expected 0x60000000. (see screenshot). + +This regression doesn't seem to happen for vbar_el1 & virtualization=off. \ No newline at end of file |