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author | Daniel Kiper <daniel.kiper@oracle.com> | 2014-07-12 21:09:48 (GMT) |
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committer | Matt Fleming <matt.fleming@intel.com> | 2014-07-18 20:24:03 (GMT) |
commit | c7341d6a61c3526631a4e4565cda72cb1f51d146 (patch) | |
tree | dd0c986ac29b5e2a8eaf523bd860588bb3d03a7b /arch/arm64/kernel/Makefile | |
parent | 57f7138d760700f56a8aa944376c28ff83c47c26 (diff) | |
download | linux-c7341d6a61c3526631a4e4565cda72cb1f51d146.tar.xz |
arch/x86/xen: Silence compiler warnings
Compiler complains in the following way when x86 32-bit kernel
with Xen support is build:
CC arch/x86/xen/enlighten.o
arch/x86/xen/enlighten.c: In function ‘xen_start_kernel’:
arch/x86/xen/enlighten.c:1726:3: warning: right shift count >= width of type [enabled by default]
Such line contains following EFI initialization code:
boot_params.efi_info.efi_systab_hi = (__u32)(__pa(efi_systab_xen) >> 32);
There is no issue if x86 64-bit kernel is build. However, 32-bit case
generate warning (even if that code will not be executed because Xen
does not work on 32-bit EFI platforms) due to __pa() returning unsigned long
type which has 32-bits width. So move whole EFI initialization stuff
to separate function and build it conditionally to avoid above mentioned
warning on x86 32-bit architecture.
Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <Konrad.wilk@oracle.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'arch/arm64/kernel/Makefile')
0 files changed, 0 insertions, 0 deletions