Merge tag 'riscv-for-linus-5.15-mw1' of git://git.kernel.org/pub/scm/…

…linux/kernel/git/riscv/linux Pull more RISC-V updates from Palmer Dabbelt: - A pair of defconfig additions, for NVMe and the EFI filesystem localization options. - A larger address space for stack randomization. - A cleanup to our install rules. - A DTS update for the Microchip Icicle board, to fix the serial console. - Support for build-time table sorting, which allows us to have __ex_table read-only. * tag 'riscv-for-linus-5.15-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: Move EXCEPTION_TABLE to RO_DATA segment riscv: Enable BUILDTIME_TABLE_SORT riscv: dts: microchip: mpfs-icicle: Fix serial console riscv: move the (z)install rules to arch/riscv/Makefile riscv: Improve stack randomisation on RV64 riscv: defconfig: enable NLS_CODEPAGE_437, NLS_ISO8859_1 riscv: defconfig: enable BLK_DEV_NVME
josf · Sep 11, 2021 · b79bd0d · b79bd0d
2 parents 4e1c754 + 6f55ab3
commit b79bd0d
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Showing 10 changed files with 22 additions and 15 deletions.
diff --git a/Documentation/features/vm/ELF-ASLR/arch-support.txt b/Documentation/features/vm/ELF-ASLR/arch-support.txt
@@ -22,7 +22,7 @@
     |    openrisc: | TODO |
     |      parisc: |  ok  |
     |     powerpc: |  ok  |
-    |       riscv: | TODO |
+    |       riscv: |  ok  |
     |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: | TODO |

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
@@ -41,6 +41,7 @@ config RISCV
 	select ARCH_WANT_FRAME_POINTERS
 	select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
 	select BINFMT_FLAT_NO_DATA_START_OFFSET if !MMU
+	select BUILDTIME_TABLE_SORT if MMU
 	select CLONE_BACKWARDS
 	select CLINT_TIMER if !MMU
 	select COMMON_CLK

diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
@@ -132,8 +132,11 @@ $(BOOT_TARGETS): vmlinux
 Image.%: Image
 	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 
-zinstall install:
-	$(Q)$(MAKE) $(build)=$(boot) $@
+install: install-image = Image
+zinstall: install-image = Image.gz
+install zinstall:
+	$(CONFIG_SHELL) $(srctree)/$(boot)/install.sh $(KERNELRELEASE) \
+	$(boot)/$(install-image) System.map "$(INSTALL_PATH)"
 
 archclean:
 	$(Q)$(MAKE) $(clean)=$(boot)
diff --git a/arch/riscv/boot/Makefile b/arch/riscv/boot/Makefile
@@ -58,11 +58,3 @@ $(obj)/Image.lzo: $(obj)/Image FORCE
 
 $(obj)/loader.bin: $(obj)/loader FORCE
 	$(call if_changed,objcopy)
-
-install:
-	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
-	$(obj)/Image System.map "$(INSTALL_PATH)"
-
-zinstall:
-	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
-	$(obj)/Image.gz System.map "$(INSTALL_PATH)"
diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
@@ -16,10 +16,14 @@
 
 	aliases {
 		ethernet0 = &emac1;
+		serial0 = &serial0;
+		serial1 = &serial1;
+		serial2 = &serial2;
+		serial3 = &serial3;
 	};
 
 	chosen {
-		stdout-path = &serial0;
+		stdout-path = "serial0:115200n8";
 	};
 
 	cpus {

diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
@@ -39,10 +39,12 @@ CONFIG_PCI=y
 CONFIG_PCIEPORTBUS=y
 CONFIG_PCI_HOST_GENERIC=y
 CONFIG_PCIE_XILINX=y
+CONFIG_PCIE_FU740=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_VIRTIO_BLK=y
+CONFIG_BLK_DEV_NVME=m
 CONFIG_BLK_DEV_SD=y
 CONFIG_BLK_DEV_SR=y
 CONFIG_SCSI_VIRTIO=y
@@ -108,6 +110,8 @@ CONFIG_NFS_V4_1=y
 CONFIG_NFS_V4_2=y
 CONFIG_ROOT_NFS=y
 CONFIG_9P_FS=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=m
 CONFIG_CRYPTO_USER_API_HASH=y
 CONFIG_CRYPTO_DEV_VIRTIO=y
 CONFIG_PRINTK_TIME=y

diff --git a/arch/riscv/include/asm/elf.h b/arch/riscv/include/asm/elf.h
@@ -42,6 +42,9 @@
  */
 #define ELF_ET_DYN_BASE		((TASK_SIZE / 3) * 2)
 
+#ifdef CONFIG_64BIT
+#define STACK_RND_MASK		(0x3ffff >> (PAGE_SHIFT - 12))
+#endif
 /*
  * This yields a mask that user programs can use to figure out what
  * instruction set this CPU supports.  This could be done in user space,

diff --git a/arch/riscv/kernel/vmlinux-xip.lds.S b/arch/riscv/kernel/vmlinux-xip.lds.S
@@ -121,7 +121,6 @@ SECTIONS
 	}
 
 	BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0)
-	EXCEPTION_TABLE(0x10)
 
 	.rel.dyn : AT(ADDR(.rel.dyn) - LOAD_OFFSET) {
 		*(.rel.dyn*)

diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S
@@ -4,6 +4,8 @@
  * Copyright (C) 2017 SiFive
  */
 
+#define RO_EXCEPTION_TABLE_ALIGN	16
+
 #ifdef CONFIG_XIP_KERNEL
 #include "vmlinux-xip.lds.S"
 #else
@@ -112,8 +114,6 @@ SECTIONS
 		*(.srodata*)
 	}
 
-	EXCEPTION_TABLE(0x10)
-
 	. = ALIGN(SECTION_ALIGN);
 	_data = .;
 

diff --git a/scripts/sorttable.c b/scripts/sorttable.c
@@ -349,6 +349,7 @@ static int do_file(char const *const fname, void *addr)
 	case EM_ARM:
 	case EM_MICROBLAZE:
 	case EM_MIPS:
+	case EM_RISCV:
 	case EM_XTENSA:
 		break;
 	default: