Merge tag 'parisc-for-6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc architecture fixes from Helge Deller:
 "This patchset fixes and enforces correct section alignments for the
  ex_table, altinstructions, parisc_unwind, jump_table and bug_table
  which are created by inline assembly.

  Due to not being correctly aligned at link & load time they can
  trigger unnecessarily the kernel unaligned exception handler at
  runtime. While at it, I switched the bug table to use relative
  addresses which reduces the size of the table by half on 64-bit.

  We still had the ENOSYM and EREMOTERELEASE errno symbols as left-overs
  from HP-UX, which now trigger build-issues with glibc. We can simply
  remove them.

  Most of the patches are tagged for stable kernel series.

  Summary:

   - Drop HP-UX ENOSYM and EREMOTERELEASE return codes to avoid glibc
     build issues

   - Fix section alignments for ex_table, altinstructions, parisc unwind
     table, jump_table and bug_table

   - Reduce size of bug_table on 64-bit kernel by using relative
     pointers"

* tag 'parisc-for-6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Reduce size of the bug_table on 64-bit kernel by half
  parisc: Drop the HP-UX ENOSYM and EREMOTERELEASE error codes
  parisc: Use natural CPU alignment for bug_table
  parisc: Ensure 32-bit alignment on parisc unwind section
  parisc: Mark lock_aligned variables 16-byte aligned on SMP
  parisc: Mark jump_table naturally aligned
  parisc: Mark altinstructions read-only and 32-bit aligned
  parisc: Mark ex_table entries 32-bit aligned in uaccess.h
  parisc: Mark ex_table entries 32-bit aligned in assembly.h

1 files changed, 22 insertions, 16 deletions

diff --git a/arch/parisc/include/asm/bug.h b/arch/parisc/include/asm/bug.h
index 4b6d60b94124..1641ff9a8b83 100644
--- a/arch/parisc/include/asm/bug.h
+++ b/arch/parisc/include/asm/bug.h
@@ -17,24 +17,27 @@
 #define	PARISC_BUG_BREAK_ASM	"break 0x1f, 0x1fff"
 #define	PARISC_BUG_BREAK_INSN	0x03ffe01f  /* PARISC_BUG_BREAK_ASM */
 
-#if defined(CONFIG_64BIT)
-#define ASM_WORD_INSN		".dword\t"
+#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
+# define __BUG_REL(val) ".word " __stringify(val) " - ."
 #else
-#define ASM_WORD_INSN		".word\t"
+# define __BUG_REL(val) ".word " __stringify(val)
 #endif
 
+
 #ifdef CONFIG_DEBUG_BUGVERBOSE
 #define BUG()								\
 	do {								\
 		asm volatile("\n"					\
 			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
-			     "\t.pushsection __bug_table,\"aw\"\n"	\
-			     "2:\t" ASM_WORD_INSN "1b, %c0\n"		\
-			     "\t.short %c1, %c2\n"			\
-			     "\t.org 2b+%c3\n"				\
+			     "\t.pushsection __bug_table,\"a\"\n"	\
+			     "\t.align 4\n"				\
+			     "2:\t" __BUG_REL(1b) "\n"			\
+			     "\t" __BUG_REL(%c0)  "\n"			\
+			     "\t.short %1, %2\n"			\
+			     "\t.blockz %3-2*4-2*2\n"			\
 			     "\t.popsection"				\
 			     : : "i" (__FILE__), "i" (__LINE__),	\
-			     "i" (0), "i" (sizeof(struct bug_entry)) ); \
+			     "i" (0), "i" (sizeof(struct bug_entry)) );	\
 		unreachable();						\
 	} while(0)
 
@@ -51,10 +54,12 @@
 	do {								\
 		asm volatile("\n"					\
 			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
-			     "\t.pushsection __bug_table,\"aw\"\n"	\
-			     "2:\t" ASM_WORD_INSN "1b, %c0\n"		\
-			     "\t.short %c1, %c2\n"			\
-			     "\t.org 2b+%c3\n"				\
+			     "\t.pushsection __bug_table,\"a\"\n"	\
+			     "\t.align 4\n"				\
+			     "2:\t" __BUG_REL(1b) "\n"			\
+			     "\t" __BUG_REL(%c0)  "\n"			\
+			     "\t.short %1, %2\n"			\
+			     "\t.blockz %3-2*4-2*2\n"			\
 			     "\t.popsection"				\
 			     : : "i" (__FILE__), "i" (__LINE__),	\
 			     "i" (BUGFLAG_WARNING|(flags)),		\
@@ -65,10 +70,11 @@
 	do {								\
 		asm volatile("\n"					\
 			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
-			     "\t.pushsection __bug_table,\"aw\"\n"	\
-			     "2:\t" ASM_WORD_INSN "1b\n"		\
-			     "\t.short %c0\n"				\
-			     "\t.org 2b+%c1\n"				\
+			     "\t.pushsection __bug_table,\"a\"\n"	\
+			     "\t.align %2\n"				\
+			     "2:\t" __BUG_REL(1b) "\n"			\
+			     "\t.short %0\n"				\
+			     "\t.blockz %1-4-2\n"			\
 			     "\t.popsection"				\
 			     : : "i" (BUGFLAG_WARNING|(flags)),		\
 			     "i" (sizeof(struct bug_entry)) );		\