diff options
| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:24:58 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:27:06 +0000 |
| commit | 33606b41d35115f887ea688b1a16f2ff85bf2fe4 (patch) | |
| tree | 406b2c7b19a087ba437c68f3dbf0b589fa1d6150 /results/scraper/launchpad-without-comments/1078892 | |
| parent | adedf8771bc4de3113041ca21bd4d0d1c0014b6a (diff) | |
| download | emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.tar.gz emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.zip | |
add launchpad bug reports without comments
Diffstat (limited to 'results/scraper/launchpad-without-comments/1078892')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1078892 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1078892 b/results/scraper/launchpad-without-comments/1078892 new file mode 100644 index 00000000..11f55295 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1078892 @@ -0,0 +1,5 @@ +qemu doesn't general protection fault if there are reserved bits set in page-directory-pointer table entries + +While working on implementing 32-bit PAE mode in a custom operating system, which I was testing in QEMU, I noticed that my OS worked correctly, but resulted in a general protection fault when booted on VMware, VirtualBox, or bochs. + +According to the Intel Architecture Manual, Volume 3A, Section 4.4.1 "PDPTE Registers", "If any of the PDPTEs sets both the P flag (bit 0) and any reserved bit, the MOV to CR instruction causes a general-protection exception (#GP(0)) and the PDPTEs are not loaded." QEMU does not emulate this behavior. \ No newline at end of file |