[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v6 2/3] ACPI: add config for BIOS table scan
From: Graeme Gregory <graeme.gregory@xxxxxxxxxx> With the addition of ARM64 that does not have a traditional BIOS to scan, add a config option which is selected on x86 (ia64 doesn't need it either, it is EFI/UEFI based system) to do the traditional BIOS scanning for tables. Signed-off-by: Graeme Gregory <graeme.gregory@xxxxxxxxxx> Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> [Linux commit 8a1664be0b922dd6afd60eca96a992ef5ec22c40] [Include <xen/kconfig.h> in osl.c so that it could use IS_ENABLED] Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx> --- xen/arch/x86/Kconfig | 1 + xen/drivers/acpi/Kconfig | 3 +++ xen/drivers/acpi/osl.c | 5 ++++- 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig index 7d2ed96..9fdd3b1 100644 --- a/xen/arch/x86/Kconfig +++ b/xen/arch/x86/Kconfig @@ -3,6 +3,7 @@ config X86_64 config X86 def_bool y + select ACPI_LEGACY_TABLES_LOOKUP select COMPAT select HAS_ACPI select HAS_CPUFREQ diff --git a/xen/drivers/acpi/Kconfig b/xen/drivers/acpi/Kconfig index 11ab5e4..82d73ca 100644 --- a/xen/drivers/acpi/Kconfig +++ b/xen/drivers/acpi/Kconfig @@ -2,3 +2,6 @@ # Select HAS_ACPI if ACPI is supported config HAS_ACPI bool + +config ACPI_LEGACY_TABLES_LOOKUP + bool diff --git a/xen/drivers/acpi/osl.c b/xen/drivers/acpi/osl.c index ce15470..2f1d723 100644 --- a/xen/drivers/acpi/osl.c +++ b/xen/drivers/acpi/osl.c @@ -38,6 +38,7 @@ #include <xen/domain_page.h> #include <xen/efi.h> #include <xen/vmap.h> +#include <xen/kconfig.h> #define _COMPONENT ACPI_OS_SERVICES ACPI_MODULE_NAME("osl") @@ -75,12 +76,14 @@ acpi_physical_address __init acpi_os_get_root_pointer(void) "System description tables not found\n"); return 0; } - } else { + } else if (IS_ENABLED(CONFIG_ACPI_LEGACY_TABLES_LOOKUP)) { acpi_physical_address pa = 0; acpi_find_root_pointer(&pa); return pa; } + + return 0; } void __iomem * -- 2.0.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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