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authorJiri Kosina <jkosina@suse.cz>2018-07-14 21:56:13 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-08-15 17:42:11 +0200
commit8f2adf3d2118cc0822b83a7bb43475f9149a1d26 (patch)
parent4b90ff885c6cc88795b678414aaf5d7b0153a5dc (diff)
x86/speculation/l1tf: Unbreak !__HAVE_ARCH_PFN_MODIFY_ALLOWED architectures
commit 6c26fcd2abfe0a56bbd95271fce02df2896cfd24 upstream. pfn_modify_allowed() and arch_has_pfn_modify_check() are outside of the !__ASSEMBLY__ section in include/asm-generic/pgtable.h, which confuses assembler on archs that don't have __HAVE_ARCH_PFN_MODIFY_ALLOWED (e.g. ia64) and breaks build: include/asm-generic/pgtable.h: Assembler messages: include/asm-generic/pgtable.h:538: Error: Unknown opcode `static inline bool pfn_modify_allowed(unsigned long pfn,pgprot_t prot)' include/asm-generic/pgtable.h:540: Error: Unknown opcode `return true' include/asm-generic/pgtable.h:543: Error: Unknown opcode `static inline bool arch_has_pfn_modify_check(void)' include/asm-generic/pgtable.h:545: Error: Unknown opcode `return false' arch/ia64/kernel/entry.S:69: Error: `mov' does not fit into bundle Move those two static inlines into the !__ASSEMBLY__ section so that they don't confuse the asm build pass. Fixes: 42e4089c7890 ("x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings") Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [groeck: Context changes] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
1 files changed, 6 insertions, 6 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 976f749099ef..dabecb661264 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -799,12 +799,6 @@ static inline int pmd_free_pte_page(pmd_t *pmd)
-#endif /* !__ASSEMBLY__ */
-#ifndef io_remap_pfn_range
-#define io_remap_pfn_range remap_pfn_range
static inline bool pfn_modify_allowed(unsigned long pfn, pgprot_t prot)
@@ -815,6 +809,12 @@ static inline bool arch_has_pfn_modify_check(void)
return false;
+#endif /* !__ASSEMBLY__ */
+#ifndef io_remap_pfn_range
+#define io_remap_pfn_range remap_pfn_range