On Thu, Sep 26, 2019 at 03:38:28PM +0800, Candle Sun wrote: > From: Candle Sun <candle....@unisoc.com> > > When ARMv8.1/ARMv8.2 cores are used in AArch32 mode, > arch_hw_breakpoint_init() in arch/arm/kernel/hw_breakpoint.c will be used. > > From ARMv8 specification, different debug architecture versions defined: > * 0110 ARMv8, v8 Debug architecture. > * 0111 ARMv8.1, v8 Debug architecture, with Virtualization Host Extensions. > * 1000 ARMv8.2, v8.2 Debug architecture. > > So missing ARMv8.1/ARMv8.2 cases will cause enable_monitor_mode() function > returns -ENODEV, and arch_hw_breakpoint_init() will fail. > > Signed-off-by: Candle Sun <candle....@unisoc.com> > Signed-off-by: Nianfu Bai <nianfu....@unisoc.com> > --- > arch/arm/include/asm/hw_breakpoint.h | 2 ++ > arch/arm/kernel/hw_breakpoint.c | 2 ++ > 2 files changed, 4 insertions(+)
How did you test this? Will
