Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "A bumper crop of arm64 fixes for -rc3.

  The largest change is fixing our parsing of the 'rodata=full' command
  line option, which kstrtobool() started treating as 'rodata=false'.
  The fix actually makes the parsing of that option much less fragile
  and updates the documentation at the same time.

  We still have a boot issue pending when KASLR is disabled at compile
  time, but there's a fresh fix on the list which I'll send next week if
  it holds up to testing.

  Summary:

   - Fix workaround for Cortex-A76 erratum #1286807

   - Add workaround for AMU erratum #2457168 on Cortex-A510

   - Drop reference to removed CONFIG_ARCH_RANDOM #define

   - Fix parsing of the "rodata=full" cmdline option

   - Fix a bunch of issues in the SME register state switching and sigframe code

   - Fix incorrect extraction of the CTR_EL0.CWG register field

   - Fix ACPI cache topology probing when the PPTT is not present

   - Trivial comment and whitespace fixes"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64/sme: Don't flush SVE register state when handling SME traps
  arm64/sme: Don't flush SVE register state when allocating SME storage
  arm64/signal: Flush FPSIMD register state when disabling streaming mode
  arm64/signal: Raise limit on stack frames
  arm64/cache: Fix cache_type_cwg() for register generation
  arm64/sysreg: Guard SYS_FIELD_ macros for asm
  arm64/sysreg: Directly include bitfield.h
  arm64: cacheinfo: Fix incorrect assignment of signed error value to unsigned fw_level
  arm64: errata: add detection for AMEVCNTR01 incrementing incorrectly
  arm64: fix rodata=full
  arm64: Fix comment typo
  docs/arm64: elf_hwcaps: unify newlines in HWCAP lists
  arm64: adjust KASLR relocation after ARCH_RANDOM removal
  arm64: Fix match_list for erratum 1286807 on Arm Cortex-A76

4 files changed, 23 insertions, 5 deletions

diff --git a/arch/arm64/include/asm/cache.h b/arch/arm64/include/asm/cache.h
index ca9b487112cc..34256bda0da9 100644
--- a/arch/arm64/include/asm/cache.h
+++ b/arch/arm64/include/asm/cache.h
@@ -71,7 +71,7 @@ static __always_inline int icache_is_vpipt(void)
 
 static inline u32 cache_type_cwg(void)
 {
-	return (read_cpuid_cachetype() >> CTR_EL0_CWG_SHIFT) & CTR_EL0_CWG_MASK;
+	return SYS_FIELD_GET(CTR_EL0, CWG, read_cpuid_cachetype());
 }
 
 #define __read_mostly __section(".data..read_mostly")
diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h
index 9bb1873f5295..6f86b7ab6c28 100644
--- a/arch/arm64/include/asm/fpsimd.h
+++ b/arch/arm64/include/asm/fpsimd.h
@@ -153,7 +153,7 @@ struct vl_info {
 
 #ifdef CONFIG_ARM64_SVE
 
-extern void sve_alloc(struct task_struct *task);
+extern void sve_alloc(struct task_struct *task, bool flush);
 extern void fpsimd_release_task(struct task_struct *task);
 extern void fpsimd_sync_to_sve(struct task_struct *task);
 extern void fpsimd_force_sync_to_sve(struct task_struct *task);
@@ -256,7 +256,7 @@ size_t sve_state_size(struct task_struct const *task);
 
 #else /* ! CONFIG_ARM64_SVE */
 
-static inline void sve_alloc(struct task_struct *task) { }
+static inline void sve_alloc(struct task_struct *task, bool flush) { }
 static inline void fpsimd_release_task(struct task_struct *task) { }
 static inline void sve_sync_to_fpsimd(struct task_struct *task) { }
 static inline void sve_sync_from_fpsimd_zeropad(struct task_struct *task) { }
diff --git a/arch/arm64/include/asm/setup.h b/arch/arm64/include/asm/setup.h
index 6437df661700..f4af547ef54c 100644
--- a/arch/arm64/include/asm/setup.h
+++ b/arch/arm64/include/asm/setup.h
@@ -3,6 +3,8 @@
 #ifndef __ARM64_ASM_SETUP_H
 #define __ARM64_ASM_SETUP_H
 
+#include <linux/string.h>
+
 #include <uapi/asm/setup.h>
 
 void *get_early_fdt_ptr(void);
@@ -14,4 +16,19 @@ void early_fdt_map(u64 dt_phys);
 extern phys_addr_t __fdt_pointer __initdata;
 extern u64 __cacheline_aligned boot_args[4];
 
+static inline bool arch_parse_debug_rodata(char *arg)
+{
+	extern bool rodata_enabled;
+	extern bool rodata_full;
+
+	if (arg && !strcmp(arg, "full")) {
+		rodata_enabled = true;
+		rodata_full = true;
+		return true;
+	}
+
+	return false;
+}
+#define arch_parse_debug_rodata arch_parse_debug_rodata
+
 #endif
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index 7c71358d44c4..818df938a7ad 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -1116,6 +1116,7 @@
 
 #else
 
+#include <linux/bitfield.h>
 #include <linux/build_bug.h>
 #include <linux/types.h>
 #include <asm/alternative.h>
@@ -1209,8 +1210,6 @@
 	par;								\
 })
 
-#endif
-
 #define SYS_FIELD_GET(reg, field, val)		\
 		 FIELD_GET(reg##_##field##_MASK, val)
 
@@ -1220,4 +1219,6 @@
 #define SYS_FIELD_PREP_ENUM(reg, field, val)		\
 		 FIELD_PREP(reg##_##field##_MASK, reg##_##field##_##val)
 
+#endif
+
 #endif	/* __ASM_SYSREG_H */