Re: [Xen-devel] [PATCH v4 16/24] arm/acpi: Map the new created EFI and ACPI tables to Dom0

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Sun, 28 Feb 2016, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
> 
> Map the UEFI and ACPI tables which we created to non-RAM space in Dom0.
> 
> Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>


>  xen/arch/arm/domain_build.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
> index 1ec6271..083ddd5 100644
> --- a/xen/arch/arm/domain_build.c
> +++ b/xen/arch/arm/domain_build.c
> @@ -1691,6 +1691,21 @@ static int prepare_acpi(struct domain *d, struct 
> kernel_info *kinfo)
>      acpi_create_efi_mmap_table(d->arch.efi_acpi_gpa, d->arch.efi_acpi_len,
>                                 d->arch.efi_acpi_table, &kinfo->mem, tbl_add);
>  
> +    /* Map the EFI and ACPI tables to Dom0 */
> +    rc = map_regions(d,
> +                     paddr_to_pfn(d->arch.efi_acpi_gpa),
> +                     PFN_UP(d->arch.efi_acpi_len),
> +                     paddr_to_pfn(virt_to_maddr(d->arch.efi_acpi_table)));
> +    if ( rc != 0 )
> +    {
> +        printk(XENLOG_ERR "Unable to map 0x%"PRIx64
> +               " - 0x%"PRIx64" in domain %d\n",
> +               d->arch.efi_acpi_gpa & PAGE_MASK,
> +               PAGE_ALIGN(d->arch.efi_acpi_gpa + d->arch.efi_acpi_len) - 1,
> +               d->domain_id);
> +        return rc;
> +    }
> +
>      return 0;
>  }
>  #else
> -- 
> 2.0.4
> 
> 

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