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aab9593c0c
There are a couple of places in the x86 EFI stub code where we select between 32-bit and 64-bit versions of the support routines based on the value of efi_early->is64. Referencing that field directly is a bad idea, since it prevents the compiler from inferring that this field can never be true on a 32-bit build, and can only become false on a 64-bit build if support for mixed mode is compiled in. This results in dead code to be retained in the uncompressed part of the kernel image, which is wasteful. So switch to the efi_is_64bit() helper, which will resolve to a constant boolean unless building for 64-bit with mixed mode support. Tested-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Lukas Wunner <lukas@wunner.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20180720014726.24031-8-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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| .. | ||
| .gitignore | ||
| cmdline.c | ||
| cpuflags.c | ||
| early_serial_console.c | ||
| eboot.c | ||
| eboot.h | ||
| efi_stub_32.S | ||
| efi_stub_64.S | ||
| efi_thunk_64.S | ||
| error.c | ||
| error.h | ||
| head_32.S | ||
| head_64.S | ||
| kaslr_64.c | ||
| kaslr.c | ||
| Makefile | ||
| mem_encrypt.S | ||
| misc.c | ||
| misc.h | ||
| mkpiggy.c | ||
| pgtable_64.c | ||
| pgtable.h | ||
| string.c | ||
| vmlinux.lds.S | ||