linux-next: manual merge of the tip tree with the arm64 tree

[Stephen Rothwell]

Hi all,

Today's linux-next merge of the tip tree got a conflict in:

  drivers/firmware/efi/libstub/arm64-stub.c

between commit:

  2b5fe07a78a0 ("arm64: efi: invoke EFI_RNG_PROTOCOL to supply KASLR 
randomness")

from the arm64 tree and commit:

  42b55734030c ("efi/arm64: Check for h/w support before booting a >4 KB 
granular kernel")

from the tip tree.

I fixed it up (see below) and can carry the fix as necessary (no action
is required).

-- 
Cheers,
Stephen Rothwell

diff --cc drivers/firmware/efi/libstub/arm64-stub.c
index e0e6b74fef8f,047fc343665a..000000000000
--- a/drivers/firmware/efi/libstub/arm64-stub.c
+++ b/drivers/firmware/efi/libstub/arm64-stub.c
@@@ -12,18 -12,34 +12,38 @@@
  #include <linux/efi.h>
  #include <asm/efi.h>
  #include <asm/sections.h>
+ #include <asm/sysreg.h>
  
 +#include "efistub.h"
 +
 +extern bool __nokaslr;
 +
- efi_status_t __init handle_kernel_image(efi_system_table_t *sys_table_arg,
-                                       unsigned long *image_addr,
-                                       unsigned long *image_size,
-                                       unsigned long *reserve_addr,
-                                       unsigned long *reserve_size,
-                                       unsigned long dram_base,
-                                       efi_loaded_image_t *image)
+ efi_status_t check_platform_features(efi_system_table_t *sys_table_arg)
+ {
+       u64 tg;
+ 
+       /* UEFI mandates support for 4 KB granularity, no need to check */
+       if (IS_ENABLED(CONFIG_ARM64_4K_PAGES))
+               return EFI_SUCCESS;
+ 
+       tg = (read_cpuid(ID_AA64MMFR0_EL1) >> ID_AA64MMFR0_TGRAN_SHIFT) & 0xf;
+       if (tg != ID_AA64MMFR0_TGRAN_SUPPORTED) {
+               if (IS_ENABLED(CONFIG_ARM64_64K_PAGES))
+                       pr_efi_err(sys_table_arg, "This 64 KB granular kernel 
is not supported by your CPU\n");
+               else
+                       pr_efi_err(sys_table_arg, "This 16 KB granular kernel 
is not supported by your CPU\n");
+               return EFI_UNSUPPORTED;
+       }
+       return EFI_SUCCESS;
+ }
+ 
+ efi_status_t handle_kernel_image(efi_system_table_t *sys_table_arg,
+                                unsigned long *image_addr,
+                                unsigned long *image_size,
+                                unsigned long *reserve_addr,
+                                unsigned long *reserve_size,
+                                unsigned long dram_base,
+                                efi_loaded_image_t *image)
  {
        efi_status_t status;
        unsigned long kernel_size, kernel_memsize = 0;