diff options
| author |   Daniel Kiper <daniel.kiper@oracle.com> | 2014-06-30 19:52:58 +0200 |
|---|---|---|
| committer |   Matt Fleming <matt.fleming@intel.com> | 2014-07-18 21:23:55 +0100 |
| commit | 9f27bc543bdf92e179927037e2ab8ed0261579a9 (patch) | |
| tree | 22ed05817b2d162f25ddb4fbb67495a8a40c3dd4 /include/linux/efi.h | |
| parent | arch/x86: Do not access EFI memory map if it is not available (diff) | |
| download | linux-dev-9f27bc543bdf92e179927037e2ab8ed0261579a9.tar.xz linux-dev-9f27bc543bdf92e179927037e2ab8ed0261579a9.zip | |
efi: Introduce EFI_PARAVIRT flag
Introduce EFI_PARAVIRT flag. If it is set then kernel runs
on EFI platform but it has not direct control on EFI stuff
like EFI runtime, tables, structures, etc. If not this means
that Linux Kernel has direct access to EFI infrastructure
and everything runs as usual.
This functionality is used in Xen dom0 because hypervisor
has full control on EFI stuff and all calls from dom0 to
EFI must be requested via special hypercall which in turn
executes relevant EFI code in behalf of dom0.
Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'include/linux/efi.h')
| -rw-r--r-- | include/linux/efi.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/efi.h b/include/linux/efi.h index bac0f93dc473..c7a29a26e900 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -922,7 +922,8 @@ extern int __init efi_setup_pcdp_console(char *); #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ #define EFI_64BIT 5 /* Is the firmware 64-bit? */ -#define EFI_ARCH_1 6 /* First arch-specific bit */ +#define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ +#define EFI_ARCH_1 7 /* First arch-specific bit */ #ifdef CONFIG_EFI /* |