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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-14 03:39:21 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-14 03:39:21 +0300
commitf4000cd99750065d5177555c0a805c97174d1b9f (patch)
tree88ab9f09e8fe1e97f34553f7964ee4598e7a0bfc /drivers
parent2ec4584eb89b8933d1ee307f2fc9c42e745847d7 (diff)
parent75037120e62b58c536999eb23d70cfcb6d6c0bcc (diff)
downloadlinux-f4000cd99750065d5177555c0a805c97174d1b9f.tar.xz
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas: - struct thread_info moved off-stack (also touching include/linux/thread_info.h and include/linux/restart_block.h) - cpus_have_cap() reworked to avoid __builtin_constant_p() for static key use (also touching drivers/irqchip/irq-gic-v3.c) - uprobes support (currently only for native 64-bit tasks) - Emulation of kernel Privileged Access Never (PAN) using TTBR0_EL1 switching to a reserved page table - CPU capacity information passing via DT or sysfs (used by the scheduler) - support for systems without FP/SIMD (IOW, kernel avoids touching these registers; there is no soft-float ABI, nor kernel emulation for AArch64 FP/SIMD) - handling of hardware watchpoint with unaligned addresses, varied lengths and offsets from base - use of the page table contiguous hint for kernel mappings - hugetlb fixes for sizes involving the contiguous hint - remove unnecessary I-cache invalidation in flush_cache_range() - CNTHCTL_EL2 access fix for CPUs with VHE support (ARMv8.1) - boot-time checks for writable+executable kernel mappings - simplify asm/opcodes.h and avoid including the 32-bit ARM counterpart and make the arm64 kernel headers self-consistent (Xen headers patch merged separately) - Workaround for broken .inst support in certain binutils versions * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (60 commits) arm64: Disable PAN on uaccess_enable() arm64: Work around broken .inst when defective gas is detected arm64: Add detection code for broken .inst support in binutils arm64: Remove reference to asm/opcodes.h arm64: Get rid of asm/opcodes.h arm64: smp: Prevent raw_smp_processor_id() recursion arm64: head.S: Fix CNTHCTL_EL2 access on VHE system arm64: Remove I-cache invalidation from flush_cache_range() arm64: Enable HIBERNATION in defconfig arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN arm64: xen: Enable user access before a privcmd hvc call arm64: Handle faults caused by inadvertent user access with PAN enabled arm64: Disable TTBR0_EL1 during normal kernel execution arm64: Introduce uaccess_{disable,enable} functionality based on TTBR0_EL1 arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm macro arm64: Factor out PAN enabling/disabling into separate uaccess_* macros arm64: Update the synchronous external abort fault description selftests: arm64: add test for unaligned/inexact watchpoint handling arm64: Allow hw watchpoint of length 3,5,6 and 7 arm64: hw_breakpoint: Handle inexact watchpoint addresses ...
Diffstat (limited to 'drivers')
-rw-r--r--drivers/firmware/efi/arm-runtime.c4
-rw-r--r--drivers/irqchip/irq-gic-v3.c13
2 files changed, 3 insertions, 14 deletions
diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c
index 7c75a8d9091a..349dc3e1e52e 100644
--- a/drivers/firmware/efi/arm-runtime.c
+++ b/drivers/firmware/efi/arm-runtime.c
@@ -39,7 +39,7 @@ static struct mm_struct efi_mm = {
.mmlist = LIST_HEAD_INIT(efi_mm.mmlist),
};
-#ifdef CONFIG_ARM64_PTDUMP
+#ifdef CONFIG_ARM64_PTDUMP_DEBUGFS
#include <asm/ptdump.h>
static struct ptdump_info efi_ptdump_info = {
@@ -53,7 +53,7 @@ static struct ptdump_info efi_ptdump_info = {
static int __init ptdump_init(void)
{
- return ptdump_register(&efi_ptdump_info, "efi_page_tables");
+ return ptdump_debugfs_register(&efi_ptdump_info, "efi_page_tables");
}
device_initcall(ptdump_init);
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 19d642eae096..26e1d7fafb1e 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -120,11 +120,10 @@ static void gic_redist_wait_for_rwp(void)
}
#ifdef CONFIG_ARM64
-static DEFINE_STATIC_KEY_FALSE(is_cavium_thunderx);
static u64 __maybe_unused gic_read_iar(void)
{
- if (static_branch_unlikely(&is_cavium_thunderx))
+ if (cpus_have_const_cap(ARM64_WORKAROUND_CAVIUM_23154))
return gic_read_iar_cavium_thunderx();
else
return gic_read_iar_common();
@@ -905,14 +904,6 @@ static const struct irq_domain_ops partition_domain_ops = {
.select = gic_irq_domain_select,
};
-static void gicv3_enable_quirks(void)
-{
-#ifdef CONFIG_ARM64
- if (cpus_have_cap(ARM64_WORKAROUND_CAVIUM_23154))
- static_branch_enable(&is_cavium_thunderx);
-#endif
-}
-
static int __init gic_init_bases(void __iomem *dist_base,
struct redist_region *rdist_regs,
u32 nr_redist_regions,
@@ -935,8 +926,6 @@ static int __init gic_init_bases(void __iomem *dist_base,
gic_data.nr_redist_regions = nr_redist_regions;
gic_data.redist_stride = redist_stride;
- gicv3_enable_quirks();
-
/*
* Find out how many interrupts are supported.
* The GIC only supports up to 1020 interrupt sources (SGI+PPI+SPI)