powerpc/64s: Remove overlaps_kvm_tmp()

kvm_tmp is now in .text and so doesn't need a special overlap check.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190911115746.12433-2-mpe@ellerman.id.au

diff --git a/arch/powerpc/include/asm/sections.h b/arch/powerpc/include/asm/sections.h
index 4a1664a8658d7b4c1a3f0b70c50ec69b6363cdae..5a9b6eb651b6c0dccda755a51c83baba5e008070 100644 (file)
--- a/arch/powerpc/include/asm/sections.h
+++ b/arch/powerpc/include/asm/sections.h
@@ -61,17 +61,6 @@ static inline int overlaps_kernel_text(unsigned long start, unsigned long end)
                (unsigned long)_stext < end;
 }
 
-static inline int overlaps_kvm_tmp(unsigned long start, unsigned long end)
-{
-#ifdef CONFIG_KVM_GUEST
-       extern char kvm_tmp[];
-       return start < (unsigned long)kvm_tmp &&
-               (unsigned long)&kvm_tmp[1024 * 1024] < end;
-#else
-       return 0;
-#endif
-}
-
 #ifdef PPC64_ELF_ABI_v1
 
 #define HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR 1

diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
index 7684a596158b63147116b6c00e8ccaf811b91b88..3410ea9f4de1c1a1627b83b22a8ff4b1fa78d012 100644 (file)
--- a/arch/powerpc/mm/book3s64/hash_utils.c
+++ b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -273,10 +273,6 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
                if (overlaps_kernel_text(vaddr, vaddr + step))
                        tprot &= ~HPTE_R_N;
 
-               /* Make kvm guest trampolines executable */
-               if (overlaps_kvm_tmp(vaddr, vaddr + step))
-                       tprot &= ~HPTE_R_N;
-
                /*
                 * If relocatable, check if it overlaps interrupt vectors that
                 * are copied down to real 0. For relocatable kernel