Re: [Xen-devel] [PATCH v3 2/2] x86/mmcfg/drhd: Move acpi_mmcfg_init() call before calling acpi_parse_dmar()

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Tue, Aug 21, 2018 at 09:53:08PM -0700, Zhenzhong Duan wrote:
> pci_conf_read8() needs pci mmcfg mapping to work on multiple pci
> segments system such as HPE Superdome-Flex.
> 
> Move acpi_mmcfg_init() call in acpi_boot_init() before calling
> acpi_parse_dmar() so that when pci_conf_read8() is called in
> acpi_parse_dev_scope(), we already have the mapping set up.
> 
> mmio_ro_ranges initialization is also moved ahead as it's the only
> dependency of pci_mmcfg_arch_enable() need to be moved. Also
> checked codes between the old and new call sites to ensure we
> don't break anything.
> 
> Furthermore MMCFG will continue to not work this early (or
> more precisely not at all until Dom0 boot has progressed far
> enough) if the range(s) isn't/aren't marked reserved in E820.
> 
> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@xxxxxxxxxx>
> Tested-by: Gopalasetty, Manoj <manoj.gopalasetty@xxxxxxx>

LGTM:

Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

I'm however failing to find patch 1/2 in this series. Could you please
make sure threading is setup correctly?

Thanks, Roger.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel