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authorDavid S. Miller <davem@davemloft.net>2019-02-08 15:00:17 -0800
committerDavid S. Miller <davem@davemloft.net>2019-02-08 15:00:17 -0800
commita655fe9f194842693258f43b5382855db1c2f654 (patch)
treea6e523c42378f43881c421530941dcbb529461ab /arch/riscv
parentxen-netback: mark expected switch fall-through (diff)
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff)
downloadlinux-dev-a655fe9f194842693258f43b5382855db1c2f654.tar.xz
linux-dev-a655fe9f194842693258f43b5382855db1c2f654.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
An ipvlan bug fix in 'net' conflicted with the abstraction away of the IPV6 specific support in 'net-next'. Similarly, a bug fix for mlx5 in 'net' conflicted with the flow action conversion in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/Kconfig2
-rw-r--r--arch/riscv/configs/defconfig8
-rw-r--r--arch/riscv/include/asm/page.h2
-rw-r--r--arch/riscv/include/asm/processor.h2
-rw-r--r--arch/riscv/kernel/asm-offsets.c1
-rw-r--r--arch/riscv/kernel/entry.S18
-rw-r--r--arch/riscv/kernel/setup.c2
-rw-r--r--arch/riscv/kernel/smpboot.c6
-rw-r--r--arch/riscv/mm/init.c3
9 files changed, 30 insertions, 14 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index e64c657060bb..bd149905a5b5 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -104,7 +104,7 @@ choice
prompt "Base ISA"
default ARCH_RV64I
help
- This selects the base ISA that this kernel will traget and must match
+ This selects the base ISA that this kernel will target and must match
the target platform.
config ARCH_RV32I
diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
index f399659d3b8d..2fd3461e50ab 100644
--- a/arch/riscv/configs/defconfig
+++ b/arch/riscv/configs/defconfig
@@ -13,8 +13,6 @@ CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_BPF_SYSCALL=y
CONFIG_SMP=y
-CONFIG_PCI=y
-CONFIG_PCIE_XILINX=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_NET=y
@@ -28,6 +26,10 @@ CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
CONFIG_NETLINK_DIAG=y
+CONFIG_PCI=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCI_HOST_GENERIC=y
+CONFIG_PCIE_XILINX=y
CONFIG_DEVTMPFS=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_VIRTIO_BLK=y
@@ -63,7 +65,6 @@ CONFIG_USB_STORAGE=y
CONFIG_USB_UAS=y
CONFIG_VIRTIO_MMIO=y
CONFIG_SIFIVE_PLIC=y
-CONFIG_RAS=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_AUTOFS4_FS=y
@@ -77,5 +78,6 @@ CONFIG_NFS_V4_1=y
CONFIG_NFS_V4_2=y
CONFIG_ROOT_NFS=y
CONFIG_CRYPTO_USER_API_HASH=y
+CONFIG_CRYPTO_DEV_VIRTIO=y
CONFIG_PRINTK_TIME=y
# CONFIG_RCU_TRACE is not set
diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h
index 06cfbb3aacbb..2a546a52f02a 100644
--- a/arch/riscv/include/asm/page.h
+++ b/arch/riscv/include/asm/page.h
@@ -80,7 +80,7 @@ typedef struct page *pgtable_t;
#define __pgd(x) ((pgd_t) { (x) })
#define __pgprot(x) ((pgprot_t) { (x) })
-#ifdef CONFIG_64BITS
+#ifdef CONFIG_64BIT
#define PTE_FMT "%016lx"
#else
#define PTE_FMT "%08lx"
diff --git a/arch/riscv/include/asm/processor.h b/arch/riscv/include/asm/processor.h
index 0531f49af5c3..ce70bceb8872 100644
--- a/arch/riscv/include/asm/processor.h
+++ b/arch/riscv/include/asm/processor.h
@@ -22,7 +22,7 @@
* This decides where the kernel will search for a free chunk of vm
* space during mmap's.
*/
-#define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE >> 1)
+#define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3)
#define STACK_TOP TASK_SIZE
#define STACK_TOP_MAX STACK_TOP
diff --git a/arch/riscv/kernel/asm-offsets.c b/arch/riscv/kernel/asm-offsets.c
index 6a92a2fe198e..dac98348c6a3 100644
--- a/arch/riscv/kernel/asm-offsets.c
+++ b/arch/riscv/kernel/asm-offsets.c
@@ -39,6 +39,7 @@ void asm_offsets(void)
OFFSET(TASK_STACK, task_struct, stack);
OFFSET(TASK_TI, task_struct, thread_info);
OFFSET(TASK_TI_FLAGS, task_struct, thread_info.flags);
+ OFFSET(TASK_TI_PREEMPT_COUNT, task_struct, thread_info.preempt_count);
OFFSET(TASK_TI_KERNEL_SP, task_struct, thread_info.kernel_sp);
OFFSET(TASK_TI_USER_SP, task_struct, thread_info.user_sp);
OFFSET(TASK_TI_CPU, task_struct, thread_info.cpu);
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
index 355166f57205..fd9b57c8b4ce 100644
--- a/arch/riscv/kernel/entry.S
+++ b/arch/riscv/kernel/entry.S
@@ -144,6 +144,10 @@ _save_context:
REG_L x2, PT_SP(sp)
.endm
+#if !IS_ENABLED(CONFIG_PREEMPT)
+.set resume_kernel, restore_all
+#endif
+
ENTRY(handle_exception)
SAVE_ALL
@@ -228,7 +232,7 @@ ret_from_exception:
REG_L s0, PT_SSTATUS(sp)
csrc sstatus, SR_SIE
andi s0, s0, SR_SPP
- bnez s0, restore_all
+ bnez s0, resume_kernel
resume_userspace:
/* Interrupts must be disabled here so flags are checked atomically */
@@ -250,6 +254,18 @@ restore_all:
RESTORE_ALL
sret
+#if IS_ENABLED(CONFIG_PREEMPT)
+resume_kernel:
+ REG_L s0, TASK_TI_PREEMPT_COUNT(tp)
+ bnez s0, restore_all
+need_resched:
+ REG_L s0, TASK_TI_FLAGS(tp)
+ andi s0, s0, _TIF_NEED_RESCHED
+ beqz s0, restore_all
+ call preempt_schedule_irq
+ j need_resched
+#endif
+
work_pending:
/* Enter slow path for supplementary processing */
la ra, ret_from_exception
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 6e079e94b638..77564310235f 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -181,7 +181,7 @@ static void __init setup_bootmem(void)
BUG_ON(mem_size == 0);
set_max_mapnr(PFN_DOWN(mem_size));
- max_low_pfn = memblock_end_of_DRAM();
+ max_low_pfn = PFN_DOWN(memblock_end_of_DRAM());
#ifdef CONFIG_BLK_DEV_INITRD
setup_initrd();
diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c
index fc185ecabb0a..18cda0e8cf94 100644
--- a/arch/riscv/kernel/smpboot.c
+++ b/arch/riscv/kernel/smpboot.c
@@ -57,15 +57,12 @@ void __init setup_smp(void)
while ((dn = of_find_node_by_type(dn, "cpu"))) {
hart = riscv_of_processor_hartid(dn);
- if (hart < 0) {
- of_node_put(dn);
+ if (hart < 0)
continue;
- }
if (hart == cpuid_to_hartid_map(0)) {
BUG_ON(found_boot_cpu);
found_boot_cpu = 1;
- of_node_put(dn);
continue;
}
@@ -73,7 +70,6 @@ void __init setup_smp(void)
set_cpu_possible(cpuid, true);
set_cpu_present(cpuid, true);
cpuid++;
- of_node_put(dn);
}
BUG_ON(!found_boot_cpu);
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 1d9bfaff60bc..658ebf645f42 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -28,7 +28,8 @@ static void __init zone_sizes_init(void)
unsigned long max_zone_pfns[MAX_NR_ZONES] = { 0, };
#ifdef CONFIG_ZONE_DMA32
- max_zone_pfns[ZONE_DMA32] = PFN_DOWN(min(4UL * SZ_1G, max_low_pfn));
+ max_zone_pfns[ZONE_DMA32] = PFN_DOWN(min(4UL * SZ_1G,
+ (unsigned long) PFN_PHYS(max_low_pfn)));
#endif
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;