Merge tag 'riscv-for-linus-6.11-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:

 - Support for NUMA (via SRAT and SLIT), console output (via SPCR), and
   cache info (via PPTT) on ACPI-based systems.

 - The trap entry/exit code no longer breaks the return address stack
   predictor on many systems, which results in an improvement to trap
   latency.

 - Support for HAVE_ARCH_STACKLEAK.

 - The sv39 linear map has been extended to support 128GiB mappings.

 - The frequency of the mtime CSR is now visible via hwprobe.

* tag 'riscv-for-linus-6.11-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (21 commits)
  RISC-V: Provide the frequency of time CSR via hwprobe
  riscv: Extend sv39 linear mapping max size to 128G
  riscv: enable HAVE_ARCH_STACKLEAK
  riscv: signal: Remove unlikely() from WARN_ON() condition
  riscv: Improve exception and system call latency
  RISC-V: Select ACPI PPTT drivers
  riscv: cacheinfo: initialize cacheinfo's level and type from ACPI PPTT
  riscv: cacheinfo: remove the useless input parameter (node) of ci_leaf_init()
  RISC-V: ACPI: Enable SPCR table for console output on RISC-V
  riscv: boot: remove duplicated targets line
  trace: riscv: Remove deprecated kprobe on ftrace support
  riscv: cpufeature: Extract common elements from extension checking
  riscv: Introduce vendor variants of extension helpers
  riscv: Add vendor extensions to /proc/cpuinfo
  riscv: Extend cpufeature.c to detect vendor extensions
  RISC-V: run savedefconfig for defconfig
  RISC-V: hwprobe: sort EXT_KEY()s in hwprobe_isa_ext0() alphabetically
  ACPI: NUMA: replace pr_info with pr_debug in arch_acpi_numa_init
  ACPI: NUMA: change the ACPI_NUMA to a hidden option
  ACPI: NUMA: Add handler for SRAT RINTC affinity structure
  ...

Author: torvalds

Documentation/arch/riscv/hwprobe.rst

@@ -264,3 +264,5 @@ The following keys are defined:
 
 * :c:macro:`RISCV_HWPROBE_KEY_HIGHEST_VIRT_ADDRESS`: An unsigned long which
   represent the highest userspace virtual address usable.
+
+* :c:macro:`RISCV_HWPROBE_KEY_TIME_CSR_FREQ`: Frequency (in Hz) of `time CSR`.

Documentation/arch/riscv/vm-layout.rst

@@ -47,11 +47,12 @@ RISC-V Linux Kernel SV39
                                                               | Kernel-space virtual memory, shared between all processes:
   ____________________________________________________________|___________________________________________________________
                     |            |                  |         |
-   ffffffc6fea00000 | -228    GB | ffffffc6feffffff |    6 MB | fixmap
-   ffffffc6ff000000 | -228    GB | ffffffc6ffffffff |   16 MB | PCI io
-   ffffffc700000000 | -228    GB | ffffffc7ffffffff |    4 GB | vmemmap
-   ffffffc800000000 | -224    GB | ffffffd7ffffffff |   64 GB | vmalloc/ioremap space
-   ffffffd800000000 | -160    GB | fffffff6ffffffff |  124 GB | direct mapping of all physical memory
+   ffffffc4fea00000 | -236    GB | ffffffc4feffffff |    6 MB | fixmap
+   ffffffc4ff000000 | -236    GB | ffffffc4ffffffff |   16 MB | PCI io
+   ffffffc500000000 | -236    GB | ffffffc5ffffffff |    4 GB | vmemmap
+   ffffffc600000000 | -232    GB | ffffffd5ffffffff |   64 GB | vmalloc/ioremap space
+   ffffffd600000000 | -168    GB | fffffff5ffffffff |  128 GB | direct mapping of all physical memory
+                    |            |                  |         |
    fffffff700000000 |  -36    GB | fffffffeffffffff |   32 GB | kasan
   __________________|____________|__________________|_________|____________________________________________________________
                                                               |

arch/arm64/Kconfig

@@ -1471,7 +1471,6 @@ config HOTPLUG_CPU
 config NUMA
 	bool "NUMA Memory Allocation and Scheduler Support"
 	select GENERIC_ARCH_NUMA
-	select ACPI_NUMA if ACPI
 	select OF_NUMA
 	select HAVE_SETUP_PER_CPU_AREA
 	select NEED_PER_CPU_EMBED_FIRST_CHUNK

arch/loongarch/Kconfig

@@ -476,7 +476,6 @@ config NR_CPUS
 config NUMA
 	bool "NUMA Support"
 	select SMP
-	select ACPI_NUMA if ACPI
 	help
 	  Say Y to compile the kernel with NUMA (Non-Uniform Memory Access)
 	  support.  This option improves performance on systems with more

arch/riscv/Kconfig

@@ -13,7 +13,9 @@ config 32BIT
 config RISCV
 	def_bool y
 	select ACPI_GENERIC_GSI if ACPI
+	select ACPI_PPTT if ACPI
 	select ACPI_REDUCED_HARDWARE_ONLY if ACPI
+	select ACPI_SPCR_TABLE if ACPI
 	select ARCH_DMA_DEFAULT_COHERENT
 	select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
 	select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM_VMEMMAP
@@ -123,6 +125,7 @@ config RISCV
 	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
 	select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET
 	select HAVE_ARCH_SECCOMP_FILTER
+	select HAVE_ARCH_STACKLEAK
 	select HAVE_ARCH_THREAD_STRUCT_WHITELIST
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT && MMU
@@ -154,7 +157,6 @@ config RISCV
 	select HAVE_KERNEL_UNCOMPRESSED if !XIP_KERNEL && !EFI_ZBOOT
 	select HAVE_KERNEL_ZSTD if !XIP_KERNEL && !EFI_ZBOOT
 	select HAVE_KPROBES if !XIP_KERNEL
-	select HAVE_KPROBES_ON_FTRACE if !XIP_KERNEL
 	select HAVE_KRETPROBES if !XIP_KERNEL
 	# https://github.com/ClangBuiltLinux/linux/issues/1881
 	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if !LD_IS_LLD
@@ -820,6 +822,8 @@ config RISCV_EFFICIENT_UNALIGNED_ACCESS
 
 endchoice
 
+source "arch/riscv/Kconfig.vendor"
+
 endmenu # "Platform type"
 
 menu "Kernel features"

arch/riscv/Kconfig.vendor

@@ -0,0 +1,19 @@
+menu "Vendor extensions"
+
+config RISCV_ISA_VENDOR_EXT
+	bool
+
+menu "Andes"
+config RISCV_ISA_VENDOR_EXT_ANDES
+	bool "Andes vendor extension support"
+	select RISCV_ISA_VENDOR_EXT
+	default y
+	help
+	  Say N here if you want to disable all Andes vendor extension
+	  support. This will cause any Andes vendor extensions that are
+	  requested by hardware probing to be ignored.
+
+	  If you don't know what to do here, say Y.
+endmenu
+
+endmenu

arch/riscv/boot/Makefile

@@ -18,7 +18,6 @@ OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
 OBJCOPYFLAGS_loader.bin :=-O binary
 OBJCOPYFLAGS_xipImage :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
 
-targets := Image Image.* loader loader.o loader.lds loader.bin
 targets := Image Image.* loader loader.o loader.lds loader.bin xipImage
 
 ifeq ($(CONFIG_XIP_KERNEL),y)

arch/riscv/configs/defconfig

@@ -7,6 +7,7 @@ CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_CGROUPS=y
 CONFIG_MEMCG=y
+CONFIG_BLK_CGROUP=y
 CONFIG_CGROUP_SCHED=y
 CONFIG_CFS_BANDWIDTH=y
 CONFIG_RT_GROUP_SCHED=y
@@ -35,9 +36,6 @@ CONFIG_ARCH_THEAD=y
 CONFIG_ARCH_VIRT=y
 CONFIG_ARCH_CANAAN=y
 CONFIG_SMP=y
-CONFIG_HOTPLUG_CPU=y
-CONFIG_PM=y
-CONFIG_CPU_IDLE=y
 CONFIG_CPU_FREQ=y
 CONFIG_CPU_FREQ_STAT=y
 CONFIG_CPU_FREQ_GOV_POWERSAVE=m
@@ -52,13 +50,11 @@ CONFIG_ACPI=y
 CONFIG_JUMP_LABEL=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
-CONFIG_SPARSEMEM_MANUAL=y
 CONFIG_BLK_DEV_THROTTLING=y
+CONFIG_SPARSEMEM_MANUAL=y
 CONFIG_NET=y
 CONFIG_PACKET=y
-CONFIG_UNIX=y
 CONFIG_XFRM_USER=m
-CONFIG_INET=y
 CONFIG_IP_MULTICAST=y
 CONFIG_IP_ADVANCED_ROUTER=y
 CONFIG_IP_PNP=y
@@ -102,9 +98,9 @@ CONFIG_NET_SCHED=y
 CONFIG_NET_CLS_CGROUP=m
 CONFIG_NETLINK_DIAG=y
 CONFIG_CGROUP_NET_PRIO=y
+CONFIG_CAN=m
 CONFIG_NET_9P=y
 CONFIG_NET_9P_VIRTIO=y
-CONFIG_CAN=m
 CONFIG_PCI=y
 CONFIG_PCIEPORTBUS=y
 CONFIG_PCI_HOST_GENERIC=y
@@ -153,8 +149,8 @@ CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_DW=y
 CONFIG_SERIAL_OF_PLATFORM=y
-CONFIG_SERIAL_SH_SCI=y
 CONFIG_SERIAL_EARLYCON_RISCV_SBI=y
+CONFIG_SERIAL_SH_SCI=y
 CONFIG_VIRTIO_CONSOLE=y
 CONFIG_HW_RANDOM=y
 CONFIG_HW_RANDOM_VIRTIO=y
@@ -179,7 +175,6 @@ CONFIG_DEVFREQ_THERMAL=y
 CONFIG_RZG2L_THERMAL=y
 CONFIG_WATCHDOG=y
 CONFIG_SUNXI_WATCHDOG=y
-CONFIG_RENESAS_RZG2LWDT=y
 CONFIG_MFD_AXP20X_I2C=y
 CONFIG_REGULATOR=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
@@ -193,11 +188,9 @@ CONFIG_DRM_NOUVEAU=m
 CONFIG_DRM_SUN4I=m
 CONFIG_DRM_VIRTIO_GPU=m
 CONFIG_FB=y
-CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_SOUND=y
 CONFIG_SND=y
 CONFIG_SND_SOC=y
-CONFIG_SND_SOC_RZ=m
 CONFIG_SND_DESIGNWARE_I2S=m
 CONFIG_SND_SOC_STARFIVE=m
 CONFIG_SND_SOC_JH7110_PWMDAC=m
@@ -239,34 +232,31 @@ CONFIG_USB_CONFIGFS_F_FS=y
 CONFIG_MMC=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_PLTFM=y
-CONFIG_MMC_SDHCI_CADENCE=y
 CONFIG_MMC_SDHCI_OF_DWCMSHC=y
+CONFIG_MMC_SDHCI_CADENCE=y
 CONFIG_MMC_SPI=y
+CONFIG_MMC_SDHI=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_STARFIVE=y
-CONFIG_MMC_SDHI=y
 CONFIG_MMC_SUNXI=y
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_SUN6I=y
 CONFIG_DMADEVICES=y
 CONFIG_DMA_SUN6I=m
 CONFIG_DW_AXI_DMAC=y
-CONFIG_RZ_DMAC=y
 CONFIG_VIRTIO_PCI=y
 CONFIG_VIRTIO_BALLOON=y
 CONFIG_VIRTIO_INPUT=y
 CONFIG_VIRTIO_MMIO=y
-CONFIG_RENESAS_OSTM=y
 CONFIG_CLK_SOPHGO_CV1800=y
 CONFIG_SUN8I_DE2_CCU=m
+CONFIG_RENESAS_OSTM=y
 CONFIG_SUN50I_IOMMU=y
 CONFIG_RPMSG_CHAR=y
 CONFIG_RPMSG_CTRL=y
 CONFIG_RPMSG_VIRTIO=y
-CONFIG_ARCH_R9A07G043=y
+CONFIG_PM_DEVFREQ=y
 CONFIG_IIO=y
-CONFIG_RZG2L_ADC=m
-CONFIG_RESET_RZG2L_USBPHY_CTRL=y
 CONFIG_PHY_SUN4I_USB=m
 CONFIG_PHY_RCAR_GEN3_USB2=y
 CONFIG_PHY_STARFIVE_JH7110_DPHY_RX=m

arch/riscv/errata/andes/errata.c

@@ -17,6 +17,7 @@
 #include <asm/processor.h>
 #include <asm/sbi.h>
 #include <asm/vendorid_list.h>
+#include <asm/vendor_extensions.h>
 
 #define ANDES_AX45MP_MARCHID		0x8000000000008a45UL
 #define ANDES_AX45MP_MIMPID		0x500UL
@@ -65,6 +66,8 @@ void __init_or_module andes_errata_patch_func(struct alt_entry *begin, struct al
 					      unsigned long archid, unsigned long impid,
 					      unsigned int stage)
 {
+	BUILD_BUG_ON(ERRATA_ANDES_NUMBER >= RISCV_VENDOR_EXT_ALTERNATIVES_BASE);
+
 	if (stage == RISCV_ALTERNATIVES_BOOT)
 		errata_probe_iocp(stage, archid, impid);
 

arch/riscv/errata/sifive/errata.c

@@ -12,6 +12,7 @@
 #include <asm/alternative.h>
 #include <asm/vendorid_list.h>
 #include <asm/errata_list.h>
+#include <asm/vendor_extensions.h>
 
 struct errata_info_t {
 	char name[32];
@@ -96,6 +97,8 @@ void sifive_errata_patch_func(struct alt_entry *begin, struct alt_entry *end,
 	u32 cpu_apply_errata = 0;
 	u32 tmp;
 
+	BUILD_BUG_ON(ERRATA_SIFIVE_NUMBER >= RISCV_VENDOR_EXT_ALTERNATIVES_BASE);
+
 	if (stage == RISCV_ALTERNATIVES_EARLY_BOOT)
 		return;