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Filename Latest commit message Latest commit date
Vitaly Kuznetsov 0eb4e1573f x86/idt: Keep spurious entries unset in system_vectors 
[ Upstream commit 1f1fbc70c10e81f70e9fbe2102d439c883269811 ]

With commit dc20b2d526 ("x86/idt: Move interrupt gate initialization to
IDT code") non assigned system vectors are also marked as used in
'used_vectors' (now 'system_vectors') bitmap. This makes checks in
arch_show_interrupts() whether a particular system vector is allocated to
always pass and e.g. 'Hyper-V reenlightenment interrupts' entry always
shows up in /proc/interrupts.

Another side effect of having all unassigned system vectors marked as used
is that irq_matrix_debug_show() will wrongly count them among 'System'
vectors.

As it is now ensured that alloc_intr_gate() is not called after init, it is
possible to leave unused entries in 'system_vectors' unset to fix these
issues.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200428093824.1451532-4-vkuznets@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-24 17:50:43 +02:00
arch x86/idt: Keep spurious entries unset in system_vectors 2020-06-24 17:50:43 +02:00
block iocost: don't let vrate run wild while there's no saturation signal 2020-06-22 09:31:06 +02:00
certs
crypto
Documentation
drivers scsi: acornscsi: Fix an error handling path in acornscsi_probe() 2020-06-24 17:50:43 +02:00
fs afs: Fix memory leak in afs_put_sysnames() 2020-06-24 17:50:42 +02:00
include include/linux/bitops.h: avoid clang shift-count-overflow warnings 2020-06-24 17:50:39 +02:00
init
ipc
kernel tracing/probe: Fix bpf_task_fd_query() for kprobes and uprobes 2020-06-24 17:50:43 +02:00
lib lib/zlib: remove outdated and incorrect pre-increment optimization 2020-06-24 17:50:39 +02:00
LICENSES
mm mm: call cond_resched() from deferred_init_memmap() 2020-06-22 09:31:14 +02:00
net bpf, sockhash: Synchronize delete from bucket list on map free 2020-06-24 17:50:42 +02:00
samples
scripts scripts: headers_install: Exit with error on config leak 2020-06-24 17:50:33 +02:00
security apparmor: fix nnp subset test for unconfined 2020-06-24 17:50:20 +02:00
sound ASoC: rt5645: Add platform-data for Asus T101HA 2020-06-24 17:50:42 +02:00
tools libbpf: Handle GCC noreturn-turned-volatile quirk 2020-06-24 17:50:43 +02:00
usr
virt
.clang-format
.cocciconfig
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Makefile Linux 5.4.48 2020-06-22 09:31:27 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.