Re: [PATCH v3 2/3] xen/ppc: Relocate kernel to physical address 0 on boot

On 8/14/23 8:09 AM, Jan Beulich wrote: > On 10.08.2023 00:48, Shawn Anastasio wrote: >> --- a/xen/arch/ppc/ppc64/head.S >> +++ b/xen/arch/ppc/ppc64/head.S >> @@ -17,6 +17,33 @@ ENTRY(start) >> addis %r2, %r12, .TOC.-1b@ha >> addi%r2, %r2, .TOC.-1b@l >> >> +/* >> + * Copy Xen

Re: [PATCH v3 2/3] xen/ppc: Relocate kernel to physical address 0 on boot

On 10.08.2023 00:48, Shawn Anastasio wrote: > --- a/xen/arch/ppc/ppc64/head.S > +++ b/xen/arch/ppc/ppc64/head.S > @@ -17,6 +17,33 @@ ENTRY(start) > addis %r2, %r12, .TOC.-1b@ha > addi%r2, %r2, .TOC.-1b@l > > +/* > + * Copy Xen to physical address zero and jump to XEN_VIRT_S

[PATCH v3 2/3] xen/ppc: Relocate kernel to physical address 0 on boot

Introduce a small assembly loop in `start` to copy the kernel to physical address 0 before continuing. This ensures that the physical address lines up with XEN_VIRT_START (0xc000) and allows us to identity map the kernel when the MMU is set up in the next patch. We are also able to sta