unicorn/qemu/target
Remi Denis-Courmont a20bb60f06
target/arm: fix AArch64 virtual address space size
Since QEMU does not support the ARMv8.2-LVA, Large Virtual Address,
extension (yet), the VA address space is 48-bits plus a sign bit. User
mode can only handle the positive half of the address space, so that
makes a limit of 48 bits.

(With LVA, it would be 53 and 52 bits respectively.)

The incorrectly large address space conflicts with PAuth instructions,
which use bits 48-54 and 56-63 for the pointer authentication code. This
also conflicts with (as yet unsupported by QEMU) data tagging and with
the ARMv8.5-MTE extension.

Backports commit f6768aa1b4c6a80448eabd22bb9b4123c709caea from qemu
2019-02-03 17:55:30 -05:00
..
arm target/arm: fix AArch64 virtual address space size 2019-02-03 17:55:30 -05:00
i386 i386: Enable NPT and NRIPSAVE for AMD CPUs 2019-02-03 17:55:28 -05:00
m68k target/m68k: Fix LGPL information in the file headers 2019-02-03 17:55:29 -05:00
mips target/mips: Add I6500 core configuration 2019-01-25 13:46:18 -05:00
sparc target: Resolve repeated typedef warnings 2019-01-22 20:27:35 -05:00