[PATCH v3 53/62] arm/acpi: Map the new created EFI and ACPI tables to Dom0
From: shannon.zhao at linaro.org <hidden>
Date: 2015-11-17 09:40:52
Also in:
xen-devel
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Shannon Zhao <redacted> Here we map these new created EFI and ACPI tables to the non-RAM space of Dom0. Then Dom0 could visit them. Signed-off-by: Shannon Zhao <redacted> --- 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), + 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
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2.1.0