Re: [Qemu-devel] [PATCH 1/1] target/ppc: Fix emulated userspace access to USPRG3

2017-04-19 Thread David Gibson
On Thu, Apr 20, 2017 at 11:44:17AM +1000, Sam Bobroff wrote: > On a fully emulated Power8 system, user space is currently unable to > read from USPRG3 (SPR number 0x103) because it receives an illegal > instruction exception. > > However the ISA indicates that it should have read access (to the >

[Qemu-devel] [PATCH 1/1] target/ppc: Fix emulated userspace access to USPRG3

2017-04-19 Thread Sam Bobroff
On a fully emulated Power8 system, user space is currently unable to read from USPRG3 (SPR number 0x103) because it receives an illegal instruction exception. However the ISA indicates that it should have read access (to the content of SPR 0x113, similar to some other registers with user space rea