Revert "x86-64/efi: Use EFI to deal with platform wall clock (again)"
This reverts commit bd52276fa1d4 ("x86-64/efi: Use EFI to deal with
platform wall clock (again)"), and the two supporting commits:
da5a108d05b4: "x86/kernel: remove tboot 1:1 page table creation code"
185034e72d59: "x86, efi: 1:1 pagetable mapping for virtual EFI calls")
as they all depend semantically on commit 53b87cf088e2 ("x86, mm:
Include the entire kernel memory map in trampoline_pgd") that got
reverted earlier due to the problems it caused.
This was pointed out by Yinghai Lu, and verified by me on my Macbook Air
that uses EFI.
Pointed-out-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index fd13815..6e8fdf5 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -69,37 +69,23 @@
efi_call6((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3), \
(u64)(a4), (u64)(a5), (u64)(a6))
-extern unsigned long efi_call_virt_prelog(void);
-extern void efi_call_virt_epilog(unsigned long);
-
-#define efi_callx(x, func, ...) \
- ({ \
- efi_status_t __status; \
- unsigned long __pgd; \
- \
- __pgd = efi_call_virt_prelog(); \
- __status = efi_call##x(func, __VA_ARGS__); \
- efi_call_virt_epilog(__pgd); \
- __status; \
- })
-
#define efi_call_virt0(f) \
- efi_callx(0, (void *)(efi.systab->runtime->f))
+ efi_call0((void *)(efi.systab->runtime->f))
#define efi_call_virt1(f, a1) \
- efi_callx(1, (void *)(efi.systab->runtime->f), (u64)(a1))
+ efi_call1((void *)(efi.systab->runtime->f), (u64)(a1))
#define efi_call_virt2(f, a1, a2) \
- efi_callx(2, (void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2))
+ efi_call2((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2))
#define efi_call_virt3(f, a1, a2, a3) \
- efi_callx(3, (void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
+ efi_call3((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
(u64)(a3))
#define efi_call_virt4(f, a1, a2, a3, a4) \
- efi_callx(4, (void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
+ efi_call4((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
(u64)(a3), (u64)(a4))
#define efi_call_virt5(f, a1, a2, a3, a4, a5) \
- efi_callx(5, (void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
+ efi_call5((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
(u64)(a3), (u64)(a4), (u64)(a5))
#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
- efi_callx(6, (void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
+ efi_call6((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
(u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size,