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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-10-27 13:37:40 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-10-27 13:37:40 -0300
commitbadc0e42604c4465facd81d2323e98b3b1eb9188 (patch)
treee61811e7ddf70517f4b546d522ba3b630b38f50f /arch/arm64
parentf19866e5cb04f8f007cb422132ea4611cdacc8e3 (diff)
Linux-libre 4.2.4-gnupck-4.2.4-gnu
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/kernel/efi.c3
-rw-r--r--arch/arm64/kernel/entry-ftrace.S22
-rw-r--r--arch/arm64/mm/fault.c1
3 files changed, 23 insertions, 3 deletions
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index e8ca6eaed..13671a9cf 100644
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -258,7 +258,8 @@ static bool __init efi_virtmap_init(void)
*/
if (!is_normal_ram(md))
prot = __pgprot(PROT_DEVICE_nGnRE);
- else if (md->type == EFI_RUNTIME_SERVICES_CODE)
+ else if (md->type == EFI_RUNTIME_SERVICES_CODE ||
+ !PAGE_ALIGNED(md->phys_addr))
prot = PAGE_KERNEL_EXEC;
else
prot = PAGE_KERNEL;
diff --git a/arch/arm64/kernel/entry-ftrace.S b/arch/arm64/kernel/entry-ftrace.S
index 08cafc518..0f03a8fe2 100644
--- a/arch/arm64/kernel/entry-ftrace.S
+++ b/arch/arm64/kernel/entry-ftrace.S
@@ -178,6 +178,24 @@ ENTRY(ftrace_stub)
ENDPROC(ftrace_stub)
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+ /* save return value regs*/
+ .macro save_return_regs
+ sub sp, sp, #64
+ stp x0, x1, [sp]
+ stp x2, x3, [sp, #16]
+ stp x4, x5, [sp, #32]
+ stp x6, x7, [sp, #48]
+ .endm
+
+ /* restore return value regs*/
+ .macro restore_return_regs
+ ldp x0, x1, [sp]
+ ldp x2, x3, [sp, #16]
+ ldp x4, x5, [sp, #32]
+ ldp x6, x7, [sp, #48]
+ add sp, sp, #64
+ .endm
+
/*
* void ftrace_graph_caller(void)
*
@@ -204,11 +222,11 @@ ENDPROC(ftrace_graph_caller)
* only when CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST is enabled.
*/
ENTRY(return_to_handler)
- str x0, [sp, #-16]!
+ save_return_regs
mov x0, x29 // parent's fp
bl ftrace_return_to_handler// addr = ftrace_return_to_hander(fp);
mov x30, x0 // restore the original return address
- ldr x0, [sp], #16
+ restore_return_regs
ret
END(return_to_handler)
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 94d98cd1a..27c3e6fd2 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -278,6 +278,7 @@ retry:
* starvation.
*/
mm_flags &= ~FAULT_FLAG_ALLOW_RETRY;
+ mm_flags |= FAULT_FLAG_TRIED;
goto retry;
}
}