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

Pull arm64 updates from Catalin Marinas:
 "The major features are support for LPA2 (52-bit VA/PA with 4K and 16K
  pages), the dpISA extension and Rust enabled on arm64. The changes are
  mostly contained within the usual arch/arm64/, drivers/perf, the arm64
  Documentation and kselftests. The exception is the Rust support which
  touches some generic build files.

  Summary:

   - Reorganise the arm64 kernel VA space and add support for LPA2 (at
     stage 1, KVM stage 2 was merged earlier) - 52-bit VA/PA address
     range with 4KB and 16KB pages

   - Enable Rust on arm64

   - Support for the 2023 dpISA extensions (data processing ISA), host
     only

   - arm64 perf updates:

      - StarFive's StarLink (integrates one or more CPU cores with a
        shared L3 memory system) PMU support

      - Enable HiSilicon Erratum 162700402 quirk for HIP09

      - Several updates for the HiSilicon PCIe PMU driver

      - Arm CoreSight PMU support

      - Convert all drivers under drivers/perf/ to use .remove_new()

   - Miscellaneous:

      - Don't enable workarounds for "rare" errata by default

      - Clean up the DAIF flags handling for EL0 returns (in preparation
        for NMI support)

      - Kselftest update for ptrace()

      - Update some of the sysreg field definitions

      - Slight improvement in the code generation for inline asm I/O
        accessors to permit offset addressing

      - kretprobes: acquire regs via a BRK exception (previously done
        via a trampoline handler)

      - SVE/SME cleanups, comment updates

      - Allow CALL_OPS+CC_OPTIMIZE_FOR_SIZE with clang (previously
        disabled due to gcc silently ignoring -falign-functions=N)"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (134 commits)
  Revert "mm: add arch hook to validate mmap() prot flags"
  Revert "arm64: mm: add support for WXN memory translation attribute"
  Revert "ARM64: Dynamically allocate cpumasks and increase supported CPUs to 512"
  ARM64: Dynamically allocate cpumasks and increase supported CPUs to 512
  kselftest/arm64: Add 2023 DPISA hwcap test coverage
  kselftest/arm64: Add basic FPMR test
  kselftest/arm64: Handle FPMR context in generic signal frame parser
  arm64/hwcap: Define hwcaps for 2023 DPISA features
  arm64/ptrace: Expose FPMR via ptrace
  arm64/signal: Add FPMR signal handling
  arm64/fpsimd: Support FEAT_FPMR
  arm64/fpsimd: Enable host kernel access to FPMR
  arm64/cpufeature: Hook new identification registers up to cpufeature
  docs: perf: Fix build warning of hisi-pcie-pmu.rst
  perf: starfive: Only allow COMPILE_TEST for 64-bit architectures
  MAINTAINERS: Add entry for StarFive StarLink PMU
  docs: perf: Add description for StarFive's StarLink PMU
  dt-bindings: perf: starfive: Add JH8100 StarLink PMU
  perf: starfive: Add StarLink PMU support
  docs: perf: Update usage for target filter of hisi-pcie-pmu
  ...

1 files changed, 29 insertions, 26 deletions

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index ae0db7c97435..6e1a2edb2be0 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -164,7 +164,7 @@ config ARM64
 	select HAVE_ARCH_HUGE_VMAP
 	select HAVE_ARCH_JUMP_LABEL
 	select HAVE_ARCH_JUMP_LABEL_RELATIVE
-	select HAVE_ARCH_KASAN if !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
+	select HAVE_ARCH_KASAN
 	select HAVE_ARCH_KASAN_VMALLOC if HAVE_ARCH_KASAN
 	select HAVE_ARCH_KASAN_SW_TAGS if HAVE_ARCH_KASAN
 	select HAVE_ARCH_KASAN_HW_TAGS if (HAVE_ARCH_KASAN && ARM64_MTE)
@@ -198,7 +198,7 @@ config ARM64
 		if DYNAMIC_FTRACE_WITH_ARGS && DYNAMIC_FTRACE_WITH_CALL_OPS
 	select HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS \
 		if (DYNAMIC_FTRACE_WITH_ARGS && !CFI_CLANG && \
-		    !CC_OPTIMIZE_FOR_SIZE)
+		    (CC_IS_CLANG || !CC_OPTIMIZE_FOR_SIZE))
 	select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY \
 		if DYNAMIC_FTRACE_WITH_ARGS
 	select HAVE_SAMPLE_FTRACE_DIRECT
@@ -229,6 +229,7 @@ config ARM64
 	select HAVE_FUNCTION_ARG_ACCESS_API
 	select MMU_GATHER_RCU_TABLE_FREE
 	select HAVE_RSEQ
+	select HAVE_RUST if CPU_LITTLE_ENDIAN
 	select HAVE_STACKPROTECTOR
 	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_KPROBES
@@ -362,7 +363,9 @@ config PGTABLE_LEVELS
 	default 3 if ARM64_64K_PAGES && (ARM64_VA_BITS_48 || ARM64_VA_BITS_52)
 	default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
 	default 3 if ARM64_16K_PAGES && ARM64_VA_BITS_47
+	default 4 if ARM64_16K_PAGES && (ARM64_VA_BITS_48 || ARM64_VA_BITS_52)
 	default 4 if !ARM64_64K_PAGES && ARM64_VA_BITS_48
+	default 5 if ARM64_4K_PAGES && ARM64_VA_BITS_52
 
 config ARCH_SUPPORTS_UPROBES
 	def_bool y
@@ -390,13 +393,13 @@ config BUILTIN_RETURN_ADDRESS_STRIPS_PAC
 config KASAN_SHADOW_OFFSET
 	hex
 	depends on KASAN_GENERIC || KASAN_SW_TAGS
-	default 0xdfff800000000000 if (ARM64_VA_BITS_48 || ARM64_VA_BITS_52) && !KASAN_SW_TAGS
-	default 0xdfffc00000000000 if ARM64_VA_BITS_47 && !KASAN_SW_TAGS
+	default 0xdfff800000000000 if (ARM64_VA_BITS_48 || (ARM64_VA_BITS_52 && !ARM64_16K_PAGES)) && !KASAN_SW_TAGS
+	default 0xdfffc00000000000 if (ARM64_VA_BITS_47 || ARM64_VA_BITS_52) && ARM64_16K_PAGES && !KASAN_SW_TAGS
 	default 0xdffffe0000000000 if ARM64_VA_BITS_42 && !KASAN_SW_TAGS
 	default 0xdfffffc000000000 if ARM64_VA_BITS_39 && !KASAN_SW_TAGS
 	default 0xdffffff800000000 if ARM64_VA_BITS_36 && !KASAN_SW_TAGS
-	default 0xefff800000000000 if (ARM64_VA_BITS_48 || ARM64_VA_BITS_52) && KASAN_SW_TAGS
-	default 0xefffc00000000000 if ARM64_VA_BITS_47 && KASAN_SW_TAGS
+	default 0xefff800000000000 if (ARM64_VA_BITS_48 || (ARM64_VA_BITS_52 && !ARM64_16K_PAGES)) && KASAN_SW_TAGS
+	default 0xefffc00000000000 if (ARM64_VA_BITS_47 || ARM64_VA_BITS_52) && ARM64_16K_PAGES && KASAN_SW_TAGS
 	default 0xeffffe0000000000 if ARM64_VA_BITS_42 && KASAN_SW_TAGS
 	default 0xefffffc000000000 if ARM64_VA_BITS_39 && KASAN_SW_TAGS
 	default 0xeffffff800000000 if ARM64_VA_BITS_36 && KASAN_SW_TAGS
@@ -541,9 +544,8 @@ config ARM64_ERRATUM_832075
 	  If unsure, say Y.
 
 config ARM64_ERRATUM_834220
-	bool "Cortex-A57: 834220: Stage 2 translation fault might be incorrectly reported in presence of a Stage 1 fault"
+	bool "Cortex-A57: 834220: Stage 2 translation fault might be incorrectly reported in presence of a Stage 1 fault (rare)"
 	depends on KVM
-	default y
 	help
 	  This option adds an alternative code sequence to work around ARM
 	  erratum 834220 on Cortex-A57 parts up to r1p2.
@@ -559,7 +561,7 @@ config ARM64_ERRATUM_834220
 	  as it depends on the alternative framework, which will only patch
 	  the kernel if an affected CPU is detected.
 
-	  If unsure, say Y.
+	  If unsure, say N.
 
 config ARM64_ERRATUM_1742098
 	bool "Cortex-A57/A72: 1742098: ELR recorded incorrectly on interrupt taken between cryptographic instructions in a sequence"
@@ -686,8 +688,7 @@ config ARM64_WORKAROUND_REPEAT_TLBI
 	bool
 
 config ARM64_ERRATUM_2441007
-	bool "Cortex-A55: Completion of affected memory accesses might not be guaranteed by completion of a TLBI"
-	default y
+	bool "Cortex-A55: Completion of affected memory accesses might not be guaranteed by completion of a TLBI (rare)"
 	select ARM64_WORKAROUND_REPEAT_TLBI
 	help
 	  This option adds a workaround for ARM Cortex-A55 erratum #2441007.
@@ -700,11 +701,10 @@ config ARM64_ERRATUM_2441007
 	  Work around this by adding the affected CPUs to the list that needs
 	  TLB sequences to be done twice.
 
-	  If unsure, say Y.
+	  If unsure, say N.
 
 config ARM64_ERRATUM_1286807
-	bool "Cortex-A76: Modification of the translation table for a virtual address might lead to read-after-read ordering violation"
-	default y
+	bool "Cortex-A76: Modification of the translation table for a virtual address might lead to read-after-read ordering violation (rare)"
 	select ARM64_WORKAROUND_REPEAT_TLBI
 	help
 	  This option adds a workaround for ARM Cortex-A76 erratum 1286807.
@@ -718,6 +718,8 @@ config ARM64_ERRATUM_1286807
 	  invalidated has been observed by other observers. The
 	  workaround repeats the TLBI+DSB operation.
 
+	  If unsure, say N.
+
 config ARM64_ERRATUM_1463225
 	bool "Cortex-A76: Software Step might prevent interrupt recognition"
 	default y
@@ -737,8 +739,7 @@ config ARM64_ERRATUM_1463225
 	  If unsure, say Y.
 
 config ARM64_ERRATUM_1542419
-	bool "Neoverse-N1: workaround mis-ordering of instruction fetches"
-	default y
+	bool "Neoverse-N1: workaround mis-ordering of instruction fetches (rare)"
 	help
 	  This option adds a workaround for ARM Neoverse-N1 erratum
 	  1542419.
@@ -750,7 +751,7 @@ config ARM64_ERRATUM_1542419
 	  Workaround the issue by hiding the DIC feature from EL0. This
 	  forces user-space to perform cache maintenance.
 
-	  If unsure, say Y.
+	  If unsure, say N.
 
 config ARM64_ERRATUM_1508412
 	bool "Cortex-A77: 1508412: workaround deadlock on sequence of NC/Device load and store exclusive or PAR read"
@@ -925,8 +926,7 @@ config ARM64_ERRATUM_2224489
 	  If unsure, say Y.
 
 config ARM64_ERRATUM_2441009
-	bool "Cortex-A510: Completion of affected memory accesses might not be guaranteed by completion of a TLBI"
-	default y
+	bool "Cortex-A510: Completion of affected memory accesses might not be guaranteed by completion of a TLBI (rare)"
 	select ARM64_WORKAROUND_REPEAT_TLBI
 	help
 	  This option adds a workaround for ARM Cortex-A510 erratum #2441009.
@@ -939,7 +939,7 @@ config ARM64_ERRATUM_2441009
 	  Work around this by adding the affected CPUs to the list that needs
 	  TLB sequences to be done twice.
 
-	  If unsure, say Y.
+	  If unsure, say N.
 
 config ARM64_ERRATUM_2064142
 	bool "Cortex-A510: 2064142: workaround TRBE register writes while disabled"
@@ -1278,9 +1278,7 @@ endchoice
 
 choice
 	prompt "Virtual address space size"
-	default ARM64_VA_BITS_39 if ARM64_4K_PAGES
-	default ARM64_VA_BITS_47 if ARM64_16K_PAGES
-	default ARM64_VA_BITS_42 if ARM64_64K_PAGES
+	default ARM64_VA_BITS_52
 	help
 	  Allows choosing one of multiple possible virtual address
 	  space sizes. The level of translation table is determined by
@@ -1307,7 +1305,7 @@ config ARM64_VA_BITS_48
 
 config ARM64_VA_BITS_52
 	bool "52-bit"
-	depends on ARM64_64K_PAGES && (ARM64_PAN || !ARM64_SW_TTBR0_PAN)
+	depends on ARM64_PAN || !ARM64_SW_TTBR0_PAN
 	help
 	  Enable 52-bit virtual addressing for userspace when explicitly
 	  requested via a hint to mmap(). The kernel will also use 52-bit
@@ -1354,10 +1352,11 @@ choice
 
 config ARM64_PA_BITS_48
 	bool "48-bit"
+	depends on ARM64_64K_PAGES || !ARM64_VA_BITS_52
 
 config ARM64_PA_BITS_52
-	bool "52-bit (ARMv8.2)"
-	depends on ARM64_64K_PAGES
+	bool "52-bit"
+	depends on ARM64_64K_PAGES || ARM64_VA_BITS_52
 	depends on ARM64_PAN || !ARM64_SW_TTBR0_PAN
 	help
 	  Enable support for a 52-bit physical address space, introduced as
@@ -1374,6 +1373,10 @@ config ARM64_PA_BITS
 	default 48 if ARM64_PA_BITS_48
 	default 52 if ARM64_PA_BITS_52
 
+config ARM64_LPA2
+	def_bool y
+	depends on ARM64_PA_BITS_52 && !ARM64_64K_PAGES
+
 choice
 	prompt "Endianness"
 	default CPU_LITTLE_ENDIAN