d2964ddd6b
Changes in 4.9.176 x86/MCE: Save microcode revision in machine check records x86/cpufeatures: Hide AMD-specific speculation flags x86/bugs: Add AMD's variant of SSB_NO x86/bugs: Add AMD's SPEC_CTRL MSR usage x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features x86/bugs: Fix the AMD SSBD usage of the SPEC_CTRL MSR x86/microcode/intel: Add a helper which gives the microcode revision x86/microcode/intel: Check microcode revision before updating sibling threads x86/microcode: Make sure boot_cpu_data.microcode is up-to-date x86/microcode: Update the new microcode revision unconditionally x86/mm: Use WRITE_ONCE() when setting PTEs bitops: avoid integer overflow in GENMASK(_ULL) x86/speculation: Simplify the CPU bug detection logic locking/atomics, asm-generic: Move some macros from <linux/bitops.h> to a new <linux/bits.h> file x86/speculation: Remove SPECTRE_V2_IBRS in enum spectre_v2_mitigation x86/cpu: Sanitize FAM6_ATOM naming Documentation/l1tf: Fix small spelling typo x86/speculation: Apply IBPB more strictly to avoid cross-process data leak x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation x86/speculation: Propagate information about RSB filling mitigation to sysfs x86/speculation/l1tf: Drop the swap storage limit restriction when l1tf=off x86/speculation: Update the TIF_SSBD comment x86/speculation: Clean up spectre_v2_parse_cmdline() x86/speculation: Remove unnecessary ret variable in cpu_show_common() x86/speculation: Move STIPB/IBPB string conditionals out of cpu_show_common() x86/speculation: Disable STIBP when enhanced IBRS is in use x86/speculation: Rename SSBD update functions x86/speculation: Reorganize speculation control MSRs update x86/Kconfig: Select SCHED_SMT if SMP enabled sched: Add sched_smt_active() x86/speculation: Rework SMT state change x86/l1tf: Show actual SMT state x86/speculation: Reorder the spec_v2 code x86/speculation: Mark string arrays const correctly x86/speculataion: Mark command line parser data __initdata x86/speculation: Unify conditional spectre v2 print functions x86/speculation: Add command line control for indirect branch speculation x86/speculation: Prepare for per task indirect branch speculation control x86/process: Consolidate and simplify switch_to_xtra() code x86/speculation: Avoid __switch_to_xtra() calls x86/speculation: Prepare for conditional IBPB in switch_mm() x86/speculation: Split out TIF update x86/speculation: Prepare arch_smt_update() for PRCTL mode x86/speculation: Prevent stale SPEC_CTRL msr content x86/speculation: Add prctl() control for indirect branch speculation x86/speculation: Enable prctl mode for spectre_v2_user x86/speculation: Add seccomp Spectre v2 user space protection mode x86/speculation: Provide IBPB always command line options kvm: x86: Report STIBP on GET_SUPPORTED_CPUID x86/msr-index: Cleanup bit defines x86/speculation: Consolidate CPU whitelists x86/speculation/mds: Add basic bug infrastructure for MDS x86/speculation/mds: Add BUG_MSBDS_ONLY x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests x86/speculation/mds: Add mds_clear_cpu_buffers() x86/speculation/mds: Clear CPU buffers on exit to user x86/kvm/vmx: Add MDS protection when L1D Flush is not active x86/speculation/mds: Conditionally clear CPU buffers on idle entry x86/speculation/mds: Add mitigation control for MDS x86/speculation/mds: Add sysfs reporting for MDS x86/speculation/mds: Add mitigation mode VMWERV Documentation: Move L1TF to separate directory Documentation: Add MDS vulnerability documentation x86/speculation/mds: Add mds=full,nosmt cmdline option x86/speculation: Move arch_smt_update() call to after mitigation decisions x86/speculation/mds: Add SMT warning message x86/speculation/mds: Fix comment x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off cpu/speculation: Add 'mitigations=' cmdline option x86/speculation: Support 'mitigations=' cmdline option x86/speculation/mds: Add 'mitigations=' support for MDS x86/mds: Add MDSUM variant to the MDS documentation Documentation: Correct the possible MDS sysfs values x86/speculation/mds: Fix documentation typo x86: stop exporting msr-index.h to userland x86/cpu/bugs: Use __initconst for 'const' init data Linux 4.9.176 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
27 lines
833 B
C
27 lines
833 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_BITS_H
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#define __LINUX_BITS_H
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#include <asm/bitsperlong.h>
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#define BIT(nr) (1UL << (nr))
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#define BIT_ULL(nr) (1ULL << (nr))
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#define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
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#define BIT_WORD(nr) ((nr) / BITS_PER_LONG)
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#define BIT_ULL_MASK(nr) (1ULL << ((nr) % BITS_PER_LONG_LONG))
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#define BIT_ULL_WORD(nr) ((nr) / BITS_PER_LONG_LONG)
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#define BITS_PER_BYTE 8
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/*
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* Create a contiguous bitmask starting at bit position @l and ending at
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* position @h. For example
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* GENMASK_ULL(39, 21) gives us the 64bit vector 0x000000ffffe00000.
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*/
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#define GENMASK(h, l) \
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(((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
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#define GENMASK_ULL(h, l) \
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(((~0ULL) - (1ULL << (l)) + 1) & \
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(~0ULL >> (BITS_PER_LONG_LONG - 1 - (h))))
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#endif /* __LINUX_BITS_H */
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