On 9/9/24 10:13 AM, Ard Biesheuvel via groups.io wrote:
On Mon, 9 Sept 2024 at 18:11, Rebecca Cran <rebe...@bsdio.com> wrote:
Replace the old X86EmulatorDxe with one built from
https://github.com/intel/MultiArchUefiPkg. This is a much more modern,
recent implementation that's more reliable and is actively maintained.
What was the conclusion in the end regarding NULL pointer deref handling?
Andrei (cc'd) said:
"- All memory but the zero page is visible to the emulator. See
CpuNullReadCb/CpuNullWriteCb. See also TestNullDeref in
Application/EmulatorTest. I don't remember if I added the behavior
because this is what the original did, or because I actively tripped on
the NULL accesses from some x86 code I was testing..."
I don't know if that resolved the concern or not.
--
Rebecca
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