Re: [PATCH] target/hppa: Fix boot with old Linux installation CDs

2020-08-30 Thread Richard Henderson
On 8/30/20 6:21 AM, Helge Deller wrote: > The patch below modifies the qemu instruction decoder to ignore the > 64-bit flag too - which is what real 32-bit hardware seems to do as > well. With this modification qemu now successfully boots those older > images too. > > I suggest to apply the patch

[PATCH] target/hppa: Fix boot with old Linux installation CDs

2020-08-30 Thread Helge Deller
The current qemu hppa emulation emulates a PA1.1 CPU, which can only execute the 32-bit instruction set. For unknown 64-bit instructions, a instruction trap is sent to the virtual CPU. This behaviour is correct in the sense that we emulate what the PA1.1 specification says. But when trying to boot