Hi, Refer https://lore.kernel.org/all/alpine.DEB.2.22.394.2312071341540.1265976@ubuntu-linux-20-04-desktop/T/ for the previous discussion on this issue.
Also, the linux earlycon hvc driver has been fixed. See https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h=tty-next&id=0ec058ece2f933aed66b76bd5cb9b5e6764853c3 Changes from v1:- 1. Split the change across 3 patches as per the design consensus. v2 :- 1. Reordered the patches. Ayan Kumar Halder (2): xen/arm: Introduce CONFIG_PARTIAL_EMULATION and "partial-emulation" cmd option xen/arm: arm32: Add emulation of Debug Data Transfer Registers Michal Orzel (1): xen/arm: arm64: Add emulation of Debug Data Transfer Registers docs/misc/xen-command-line.pandoc | 7 ++++++ xen/arch/arm/Kconfig | 8 +++++++ xen/arch/arm/arm64/vsysreg.c | 25 +++++++++++++++---- xen/arch/arm/include/asm/arm64/hsr.h | 3 +++ xen/arch/arm/include/asm/cpregs.h | 2 ++ xen/arch/arm/include/asm/regs.h | 6 +++++ xen/arch/arm/traps.c | 3 +++ xen/arch/arm/vcpreg.c | 36 ++++++++++++++++++++-------- 8 files changed, 76 insertions(+), 14 deletions(-) -- 2.25.1