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Paolo Bonzini 5d26eaae15 KVM/arm64 fixes for 6.18, take #1 
Improvements and bug fixes:
 
 - Fix the handling of ZCR_EL2 in NV VMs
   (20250926194108.84093-1-oliver.upton@linux.dev)
 
 - Pick the correct translation regime when doing a PTW on
   the back of a SEA (20250926224246.731748-1-oliver.upton@linux.dev)
 
 - Prevent userspace from injecting an event into a vcpu that isn't
   initialised yet (20250930085237.108326-1-oliver.upton@linux.dev)
 
 - Move timer save/restore to the sysreg handling code, fixing EL2 timer
   access in the process (20250929160458.3351788-1-maz@kernel.org)
 
 - Add FGT-based trapping of MDSCR_EL1 to reduce the overhead of debug
   (20250924235150.617451-1-oliver.upton@linux.dev)
 
 - Fix trapping configuration when the host isn't GICv3
   (20251007160704.1673584-1-sascha.bischoff@arm.com)
 
 - Improve the detection of HCR_EL2.E2H being RES1
   (20251009121239.29370-1-maz@kernel.org)
 
 - Drop a spurious 'break' statement in the S1 PTW
   (20250930135621.162050-1-osama.abdelkader@gmail.com)
 
 - Don't try to access SPE when owned by EL3
   (20251010174707.1684200-1-mukesh.ojha@oss.qualcomm.com)
 
 Documentation updates:
 
 - Document the failure modes of event injection
   (20250930233620.124607-1-oliver.upton@linux.dev)
 
 - Document that a GICv3 guest can be created on a GICv5 host
   with FEAT_GCIE_LEGACY (20251007154848.1640444-1-sascha.bischoff@arm.com)
 
 Selftest improvements:
 
 - Add a sesttest for the effective value of HCR_EL2.AMO
   (20250926224454.734066-1-oliver.upton@linux.dev)
 
 - Address build warning in the timer selftest when building
   with clang (20250926155838.2612205-1-seanjc@google.com)
 
 - Teach irq_fd selftests about non-x86 architectures
   (20250930193301.119859-1-oliver.upton@linux.dev)
 
 - Add missing sysregs to the set_id_regs selftest
   (20251012154352.61133-1-zenghui.yu@linux.dev)
 
 - Fix vcpu allocation in the vgic_lpi_stress selftest
   (20251008154520.54801-1-zenghui.yu@linux.dev)
 
 - Correctly enable interrupts in the vgic_lpi_stress selftest
   (20251007195254.260539-1-oliver.upton@linux.dev)
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Merge tag 'kvmarm-fixes-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.18, take #1

Improvements and bug fixes:

- Fix the handling of ZCR_EL2 in NV VMs
  (20250926194108.84093-1-oliver.upton@linux.dev)

- Pick the correct translation regime when doing a PTW on
  the back of a SEA (20250926224246.731748-1-oliver.upton@linux.dev)

- Prevent userspace from injecting an event into a vcpu that isn't
  initialised yet (20250930085237.108326-1-oliver.upton@linux.dev)

- Move timer save/restore to the sysreg handling code, fixing EL2 timer
  access in the process (20250929160458.3351788-1-maz@kernel.org)

- Add FGT-based trapping of MDSCR_EL1 to reduce the overhead of debug
  (20250924235150.617451-1-oliver.upton@linux.dev)

- Fix trapping configuration when the host isn't GICv3
  (20251007160704.1673584-1-sascha.bischoff@arm.com)

- Improve the detection of HCR_EL2.E2H being RES1
  (20251009121239.29370-1-maz@kernel.org)

- Drop a spurious 'break' statement in the S1 PTW
  (20250930135621.162050-1-osama.abdelkader@gmail.com)

- Don't try to access SPE when owned by EL3
  (20251010174707.1684200-1-mukesh.ojha@oss.qualcomm.com)

Documentation updates:

- Document the failure modes of event injection
  (20250930233620.124607-1-oliver.upton@linux.dev)

- Document that a GICv3 guest can be created on a GICv5 host
  with FEAT_GCIE_LEGACY (20251007154848.1640444-1-sascha.bischoff@arm.com)

Selftest improvements:

- Add a selftest for the effective value of HCR_EL2.AMO
  (20250926224454.734066-1-oliver.upton@linux.dev)

- Address build warning in the timer selftest when building
  with clang (20250926155838.2612205-1-seanjc@google.com)

- Teach irq_fd selftests about non-x86 architectures
  (20250930193301.119859-1-oliver.upton@linux.dev)

- Add missing sysregs to the set_id_regs selftest
  (20251012154352.61133-1-zenghui.yu@linux.dev)

- Fix vcpu allocation in the vgic_lpi_stress selftest
  (20251008154520.54801-1-zenghui.yu@linux.dev)

- Correctly enable interrupts in the vgic_lpi_stress selftest
  (20251007195254.260539-1-oliver.upton@linux.dev)
 		2025-10-18 10:25:31 +02:00
Documentation Documentation: KVM: Update GICv3 docs for GICv5 hosts 2025-10-13 14:40:58 +01:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
arch arm64: Revamp HCR_EL2.E2H RES1 detection 2025-10-14 08:18:40 +01:00
block block-6.18-20251009 2025-10-10 10:37:13 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto This push contains the following changes: 2025-10-10 08:56:16 -07:00
drivers i2c-for-6.18-rc1-hotfix 2025-10-12 13:27:56 -07:00
fs - Avoid -Wflex-array-member-not-at-end warnings 2025-10-10 14:06:02 -07:00
include KVM: arm64: Kill leftovers of ad-hoc timer userspace access 2025-10-13 14:42:41 +01:00
init printk changes for 6.18 2025-10-04 11:13:11 -07:00
io_uring io_uring/zcrx: increment fallback loop src offset 2025-10-08 07:26:14 -06:00
ipc namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
kernel tracing fixes for v6.18: 2025-10-11 16:06:04 -07:00
lib lib/test_kho: use kho_preserve_vmalloc instead of storing addresses in fdt 2025-10-07 13:48:56 -07:00
mm slab hotfix for 6.18-rc1 2025-10-11 10:40:24 -07:00
net bpf-fixes 2025-10-11 10:31:38 -07:00
rust 7 hotfixes. All 7 are cc:stable and all 7 are for MM. 2025-10-11 10:14:55 -07:00
samples Char/Misc/IIO/Binder changes for 6.18-rc1 2025-10-04 16:26:32 -07:00
scripts Kbuild fixes for 6.18 #1 2025-10-11 15:47:12 -07:00
security integrity-v6.18 2025-10-05 10:48:33 -07:00
sound sound fixes for 6.18-rc1 2025-10-10 09:55:19 -07:00
tools KVM: arm64: selftests: Fix misleading comment about virtual timer encoding 2025-10-13 14:43:12 +01:00
usr gen_init_cpio: Ignore fsync() returning EINVAL on pipes 2025-10-07 09:53:05 -07:00
virt hyperv-next for v6.18 2025-10-07 08:40:15 -07:00
.clang-format memblock: drop for_each_free_mem_pfn_range_in_zone_from() 2025-09-14 08:49:03 +03:00
.clippy.toml rust: clean Rust 1.88.0's warning about `clippy::disallowed_macros` configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
…
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: remove Alyssa Rosenzweig 2025-09-18 21:17:31 +02:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore .gitignore: ignore compile_commands.json globally 2025-08-12 15:53:55 -07:00
.mailmap MAINTAINERS, .mailmap: update Umang's email address 2025-10-07 13:48:55 -07:00
.pylintrc tools: docs: parse-headers.py: move it from sphinx dir 2025-08-29 15:54:42 -06:00
.rustfmt.toml rust: add `.rustfmt.toml` 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS USB/Thunderbolt changes for 6.18-rc1 2025-10-04 16:07:08 -07:00
Kbuild sched: Make migrate_{en,dis}able() inline 2025-09-25 09:57:16 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS Just one series here - Mike Rappoport has taught KEXEC handover to 2025-10-11 10:27:52 -07:00
Makefile Linux 6.18-rc1 2025-10-12 13:42:36 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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 reStructuredText 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.