diff options
Diffstat (limited to 'results/classifier/deepseek-1/output/hypervisor/1817846')
| -rw-r--r-- | results/classifier/deepseek-1/output/hypervisor/1817846 | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/results/classifier/deepseek-1/output/hypervisor/1817846 b/results/classifier/deepseek-1/output/hypervisor/1817846 deleted file mode 100644 index 5d4820db..00000000 --- a/results/classifier/deepseek-1/output/hypervisor/1817846 +++ /dev/null @@ -1,56 +0,0 @@ - -Qemu 3.1 Aarch64 TLBI VAE1, x0 - -Hello, - -In my code I'm trying to remove some permissions to a 4KiB MMU descriptor. After that I invalidate the MMU with - -TLBI VAE1, x0 - -where x0 is the start of the address of the 4 KiB page. - -In Qemu 2.12 this did not work, but I worked around it with: - - - /* invalidate the address */ - TLBI VAE1, x0 - - - /*****************************************************************/ - /*****************************************************************/ - /* NOTE: THIS IS A TRICK FOR QEMU!!!!!!!!!!!! */ - /* Apparently we have to change the TTBR0_EL1 when we change a descriptor (especially to remove permissions) */ - /* Otherwise qemu (2.12) will continue with the same descriptor with permissions! **/ - /*****************************************************************/ - /*****************************************************************/ - - /* do a trick (in qemu) */ - mrs x1 , TTBR0_EL1 - - ldr x2 , =kernelTable0Table - - msr TTBR0_EL1 , x2 - - isb - - msr TTBR0_EL1 , x1 - - /* return from function */ - ret - - -That is, I just replaced the TTBR0_EL1 with a temporary value, and then restored it. (guess qemu 2.12 just needed to reload the values again). - -However, even this procedure is not working with qemu 3.1. (I just tested again with qemu 2.12 and the code works fine, with qemu 3.1 it does not). - -Thanks, -Pharos team - -Could you provide a test binary (and the QEMU command line to run it) that demonstrates the bug, please? - - -Marking bug as incomplete -- we can't investigate without a test case. - - -[Expired for QEMU because there has been no activity for 60 days.] - |