Merge tag 'riscv-for-linus-5.19-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - Support for the Svpbmt extension, which allows memory attributes to
   be encoded in pages

 - Support for the Allwinner D1's implementation of page-based memory
   attributes

 - Support for running rv32 binaries on rv64 systems, via the compat
   subsystem

 - Support for kexec_file()

 - Support for the new generic ticket-based spinlocks, which allows us
   to also move to qrwlock. These should have already gone in through
   the asm-geneic tree as well

 - A handful of cleanups and fixes, include some larger ones around
   atomics and XIP

* tag 'riscv-for-linus-5.19-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (51 commits)
  RISC-V: Prepare dropping week attribute from arch_kexec_apply_relocations[_add]
  riscv: compat: Using seperated vdso_maps for compat_vdso_info
  RISC-V: Fix the XIP build
  RISC-V: Split out the XIP fixups into their own file
  RISC-V: ignore xipImage
  RISC-V: Avoid empty create_*_mapping definitions
  riscv: Don't output a bogus mmu-type on a no MMU kernel
  riscv: atomic: Add custom conditional atomic operation implementation
  riscv: atomic: Optimize dec_if_positive functions
  riscv: atomic: Cleanup unnecessary definition
  RISC-V: Load purgatory in kexec_file
  RISC-V: Add purgatory
  RISC-V: Support for kexec_file on panic
  RISC-V: Add kexec_file support
  RISC-V: use memcpy for kexec_file mode
  kexec_file: Fix kexec_file.c build error for riscv platform
  riscv: compat: Add COMPAT Kbuild skeletal support
  riscv: compat: ptrace: Add compat_arch_ptrace implement
  riscv: compat: signal: Add rt_frame implementation
  riscv: add memory-type errata for T-Head
  ...

1 files changed, 96 insertions, 33 deletions

diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
index 67406c376389..e13b1f6bb400 100644
--- a/arch/riscv/include/asm/alternative-macros.h
+++ b/arch/riscv/include/asm/alternative-macros.h
@@ -2,7 +2,7 @@
 #ifndef __ASM_ALTERNATIVE_MACROS_H
 #define __ASM_ALTERNATIVE_MACROS_H
 
-#ifdef CONFIG_RISCV_ERRATA_ALTERNATIVE
+#ifdef CONFIG_RISCV_ALTERNATIVE
 
 #ifdef __ASSEMBLY__
 
@@ -21,7 +21,11 @@
 	.popsection
 	.subsection 1
 888 :
+	.option push
+	.option norvc
+	.option norelax
 	\new_c
+	.option pop
 889 :
 	.previous
 	.org    . - (889b - 888b) + (887b - 886b)
@@ -31,7 +35,11 @@
 
 .macro __ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, enable
 886 :
+	.option push
+	.option norvc
+	.option norelax
 	\old_c
+	.option pop
 887 :
 	ALT_NEW_CONTENT \vendor_id, \errata_id, \enable, \new_c
 .endm
@@ -39,44 +47,97 @@
 #define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
 	__ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k)
 
+.macro __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1, \
+				  new_c_2, vendor_id_2, errata_id_2, enable_2
+886 :
+	.option push
+	.option norvc
+	.option norelax
+	\old_c
+	.option pop
+887 :
+	ALT_NEW_CONTENT \vendor_id_1, \errata_id_1, \enable_1, \new_c_1
+	ALT_NEW_CONTENT \vendor_id_2, \errata_id_2, \enable_2, \new_c_2
+.endm
+
+#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1,	\
+					CONFIG_k_1,			\
+				  new_c_2, vendor_id_2, errata_id_2,	\
+					CONFIG_k_2)			\
+	__ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1,	\
+					IS_ENABLED(CONFIG_k_1),		\
+				   new_c_2, vendor_id_2, errata_id_2,	\
+					IS_ENABLED(CONFIG_k_2)
+
 #else /* !__ASSEMBLY__ */
 
 #include <asm/asm.h>
 #include <linux/stringify.h>
 
-#define ALT_ENTRY(oldptr, newptr, vendor_id, errata_id, newlen) \
-	RISCV_PTR " " oldptr "\n" \
-	RISCV_PTR " " newptr "\n" \
-	REG_ASM " " vendor_id "\n" \
-	REG_ASM " " newlen "\n" \
+#define ALT_ENTRY(oldptr, newptr, vendor_id, errata_id, newlen)		\
+	RISCV_PTR " " oldptr "\n"					\
+	RISCV_PTR " " newptr "\n"					\
+	REG_ASM " " vendor_id "\n"					\
+	REG_ASM " " newlen "\n"						\
 	".word " errata_id "\n"
 
-#define ALT_NEW_CONTENT(vendor_id, errata_id, enable, new_c) \
+#define ALT_NEW_CONTENT(vendor_id, errata_id, enable, new_c)		\
 	".if " __stringify(enable) " == 1\n"				\
 	".pushsection .alternative, \"a\"\n"				\
 	ALT_ENTRY("886b", "888f", __stringify(vendor_id), __stringify(errata_id), "889f - 888f") \
 	".popsection\n"							\
 	".subsection 1\n"						\
 	"888 :\n"							\
+	".option push\n"						\
+	".option norvc\n"						\
+	".option norelax\n"						\
 	new_c "\n"							\
+	".option pop\n"							\
 	"889 :\n"							\
 	".previous\n"							\
 	".org	. - (887b - 886b) + (889b - 888b)\n"			\
 	".org	. - (889b - 888b) + (887b - 886b)\n"			\
 	".endif\n"
 
-#define __ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, enable) \
-	"886 :\n"	\
-	old_c "\n"	\
-	"887 :\n"	\
+#define __ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, enable)	\
+	"886 :\n"							\
+	".option push\n"						\
+	".option norvc\n"						\
+	".option norelax\n"						\
+	old_c "\n"							\
+	".option pop\n"							\
+	"887 :\n"							\
 	ALT_NEW_CONTENT(vendor_id, errata_id, enable, new_c)
 
 #define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k)	\
 	__ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k))
 
+#define __ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1,	\
+					enable_1,			\
+				   new_c_2, vendor_id_2, errata_id_2,	\
+					enable_2)			\
+	"886 :\n"							\
+	".option push\n"						\
+	".option norvc\n"						\
+	".option norelax\n"						\
+	old_c "\n"							\
+	".option pop\n"							\
+	"887 :\n"							\
+	ALT_NEW_CONTENT(vendor_id_1, errata_id_1, enable_1, new_c_1)	\
+	ALT_NEW_CONTENT(vendor_id_2, errata_id_2, enable_2, new_c_2)
+
+#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1,	\
+					CONFIG_k_1,			\
+				  new_c_2, vendor_id_2, errata_id_2,	\
+					CONFIG_k_2)			\
+	__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1,	\
+					IS_ENABLED(CONFIG_k_1),		\
+				   new_c_2, vendor_id_2, errata_id_2,	\
+					IS_ENABLED(CONFIG_k_2))
+
 #endif /* __ASSEMBLY__ */
 
-#else /* !CONFIG_RISCV_ERRATA_ALTERNATIVE*/
+#else /* CONFIG_RISCV_ALTERNATIVE */
 #ifdef __ASSEMBLY__
 
 .macro __ALTERNATIVE_CFG old_c
@@ -86,6 +147,12 @@
 #define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
 	__ALTERNATIVE_CFG old_c
 
+#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1,	\
+					CONFIG_k_1,			\
+				  new_c_2, vendor_id_2, errata_id_2,	\
+					CONFIG_k_2)			\
+       __ALTERNATIVE_CFG old_c
+
 #else /* !__ASSEMBLY__ */
 
 #define __ALTERNATIVE_CFG(old_c)  \
@@ -94,8 +161,15 @@
 #define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
 	__ALTERNATIVE_CFG(old_c)
 
+#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1,	\
+					CONFIG_k_1,			\
+				  new_c_2, vendor_id_2, errata_id_2,	\
+					CONFIG_k_2) \
+       __ALTERNATIVE_CFG(old_c)
+
 #endif /* __ASSEMBLY__ */
-#endif /* CONFIG_RISCV_ERRATA_ALTERNATIVE */
+#endif /* CONFIG_RISCV_ALTERNATIVE */
+
 /*
  * Usage:
  *   ALTERNATIVE(old_content, new_content, vendor_id, errata_id, CONFIG_k)
@@ -118,25 +192,14 @@
  * this case, this vendor can create a new macro ALTERNATIVE_2() based
  * on the following sample code and then replace ALTERNATIVE() with
  * ALTERNATIVE_2() to append its customized content.
- *
- * .macro __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1, \
- *                                   new_c_2, vendor_id_2, errata_id_2, enable_2
- * 886 :
- *      \old_c
- * 887 :
- *      ALT_NEW_CONTENT \vendor_id_1, \errata_id_1, \enable_1, \new_c_1
- *      ALT_NEW_CONTENT \vendor_id_2, \errata_id_2, \enable_2, \new_c_2
- * .endm
- *
- * #define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, CONFIG_k_1, \
- *                                   new_c_2, vendor_id_2, errata_id_2, CONFIG_k_2) \
- *        __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, IS_ENABLED(CONFIG_k_1), \
- *                                   new_c_2, vendor_id_2, errata_id_2, IS_ENABLED(CONFIG_k_2) \
- *
- * #define ALTERNATIVE_2(old_content, new_content_1, vendor_id_1, errata_id_1, CONFIG_k_1, \
- *                                    new_content_2, vendor_id_2, errata_id_2, CONFIG_k_2) \
- *         _ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, errata_id_1, CONFIG_k_1, \
- *                                         new_content_2, vendor_id_2, errata_id_2, CONFIG_k_2)
- *
  */
+#define ALTERNATIVE_2(old_content, new_content_1, vendor_id_1,		\
+					errata_id_1, CONFIG_k_1,	\
+				   new_content_2, vendor_id_2,		\
+					errata_id_2, CONFIG_k_2)	\
+	_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1,	\
+					    errata_id_1, CONFIG_k_1,	\
+					new_content_2, vendor_id_2,	\
+					    errata_id_2, CONFIG_k_2)
+
 #endif