[PATCH v3 53/62] arm/acpi: Map the new created EFI and ACPI tables to Dom0
Stefano Stabellini
stefano.stabellini at eu.citrix.com
Fri Nov 27 06:34:59 PST 2015
On Tue, 17 Nov 2015, shannon.zhao at linaro.org wrote:
> From: Shannon Zhao <shannon.zhao at linaro.org>
>
> Here we map these new created EFI and ACPI tables to the non-RAM space
> of Dom0. Then Dom0 could visit them.
"Map the UEFI and ACPI tables which we created to non-RAM space in
Dom0."
> Signed-off-by: Shannon Zhao <shannon.zhao at linaro.org>
> ---
> 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 073c634..55f85b4 100644
> --- a/xen/arch/arm/domain_build.c
> +++ b/xen/arch/arm/domain_build.c
> @@ -1740,6 +1740,21 @@ 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_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),
> + DIV_ROUND_UP(d->arch.efi_acpi_len, PAGE_SIZE),
PFN_UP
> + 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
> --
> 2.1.0
>
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