Re: [PATCH v2 6/7] xen: allow mapping ACPI data using a different physical address

2024-09-10 Thread Jan Beulich
On 10.09.2024 10:15, Juergen Gross wrote: > On 20.08.24 11:56, Jan Beulich wrote: >> On 20.08.2024 10:20, Juergen Gross wrote: >>> @@ -838,6 +839,31 @@ void __init xen_do_remap_nonram(void) >>> pr_info("Remapped %u non-RAM page(s)\n", remapped); >>> } >>> >>> +/* >>> + * Xen variant of acp

Re: [PATCH v2 6/7] xen: allow mapping ACPI data using a different physical address

2024-09-10 Thread Juergen Gross
On 20.08.24 11:56, Jan Beulich wrote: On 20.08.2024 10:20, Juergen Gross wrote: @@ -838,6 +839,31 @@ void __init xen_do_remap_nonram(void) pr_info("Remapped %u non-RAM page(s)\n", remapped); } +/* + * Xen variant of acpi_os_ioremap() taking potentially remapped non-RAM + * regions

Re: [PATCH v2 6/7] xen: allow mapping ACPI data using a different physical address

2024-08-20 Thread kernel test robot
t-checking/20240820-162344 base: tip/x86/core patch link: https://lore.kernel.org/r/20240820082012.31316-7-jgross%40suse.com patch subject: [PATCH v2 6/7] xen: allow mapping ACPI data using a different physical address config: x86_64-randconfig-004-20240820 (https://download.01.org/0day-

Re: [PATCH v2 6/7] xen: allow mapping ACPI data using a different physical address

2024-08-20 Thread kernel test robot
t-checking/20240820-162344 base: tip/x86/core patch link: https://lore.kernel.org/r/20240820082012.31316-7-jgross%40suse.com patch subject: [PATCH v2 6/7] xen: allow mapping ACPI data using a different physical address config: i386-buildonly-randconfig-002-20240820 (https://download.01.org/0day-

Re: [PATCH v2 6/7] xen: allow mapping ACPI data using a different physical address

2024-08-20 Thread Jan Beulich
On 20.08.2024 10:20, Juergen Gross wrote: > @@ -838,6 +839,31 @@ void __init xen_do_remap_nonram(void) > pr_info("Remapped %u non-RAM page(s)\n", remapped); > } > > +/* > + * Xen variant of acpi_os_ioremap() taking potentially remapped non-RAM > + * regions into acount. > + * Any attempt t

[PATCH v2 6/7] xen: allow mapping ACPI data using a different physical address

2024-08-20 Thread Juergen Gross
When running as a Xen PV dom0 the system needs to map ACPI data of the host using host physical addresses, while those addresses can conflict with the guest physical addresses of the loaded linux kernel. This conflict can be solved by mapping the ACPI data to a different guest physical address, bu