Re: [PATCH v2 07/11] x86: drop SWIOTLB and PHYS_ADDR_T_64BIT for PAE

[Arnd Bergmann]

On Fri, Dec 20, 2024, at 03:52, kernel test robot wrote:
>
> config: i386-randconfig-001-20241213
> compiler: gcc-12
> test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
>
> (please refer to attached dmesg/kmsg for entire log/backtrace)
>

I haven't been able to figure this out, apparently something goes
wrong on a KVM guest that has more than 32-bit of addressing (RAM+MMIO)
when it uses a 32-bit phys_addr_t.

I changed the patch now to only drop SWIOTLB, not PHYS_ADDR_T_64BIT.

       Arnd