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Sean Christopherson 4bbf1931a3 x86/reboot: KVM: Handle VMXOFF in KVM's reboot callback 
[ Upstream commit 119b5cb4ff ]

Use KVM VMX's reboot/crash callback to do VMXOFF in an emergency instead
of manually and blindly doing VMXOFF.  There's no need to attempt VMXOFF
if a hypervisor, i.e. KVM, isn't loaded/active, i.e. if the CPU can't
possibly be post-VMXON.

Reviewed-by: Kai Huang <kai.huang@intel.com>
Link: https://lore.kernel.org/r/20230721201859.2307736-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Stable-dep-of: a0ee1d5faf ("KVM: VMX: Flush shadow VMCS on emergency reboot")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-08-28 16:26:13 +02:00
arch x86/reboot: KVM: Handle VMXOFF in KVM's reboot callback 2025-08-28 16:26:13 +02:00
block block: reject invalid operation in submit_bio_noacct 2025-08-28 16:26:10 +02:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2025-04-25 10:44:04 +02:00
crypto crypto: xts - Only add ecb if it is not already there 2025-06-27 11:07:06 +01:00
Documentation dt-bindings: display: sprd,sharkl3-dsi-host: Fix missing clocks constraints 2025-08-28 16:26:06 +02:00
drivers crypto: qat - fix ring to service map for QAT GEN4 2025-08-28 16:26:12 +02:00
fs mm: update memfd seal write check to include F_SEAL_WRITE 2025-08-28 16:26:12 +02:00
include mm: reinstate ability to map write-sealed memfd mappings read-only 2025-08-28 16:26:12 +02:00
init sched/isolation: Make CONFIG_CPU_ISOLATION depend on CONFIG_SMP 2025-05-02 07:47:04 +02:00
io_uring io_uring/poll: fix POLLERR handling 2025-07-24 08:51:48 +02:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:07:30 +01:00
kernel mm: drop the assumption that VM_SHARED always implies writable 2025-08-28 16:26:12 +02:00
lib maple_tree: fix mt_destroy_walk() on root leaf node 2025-07-17 18:32:09 +02:00
LICENSES
mm mm: reinstate ability to map write-sealed memfd mappings read-only 2025-08-28 16:26:12 +02:00
net Bluetooth: hci_sync: Fix UAF on hci_abort_conn_sync 2025-08-28 16:26:12 +02:00
rust rust: module: place cleanup_module() in .exit.text section 2025-07-06 10:57:54 +02:00
samples samples: mei: Fix building on musl libc 2025-08-15 12:04:55 +02:00
scripts kconfig: lxdialog: fix 'space' to (de)select options 2025-08-28 16:26:02 +02:00
security apparmor: use the condition in AA_BUG_FMT even with debug disabled 2025-08-28 16:26:01 +02:00
sound ASoC: fsl_sai: replace regmap_write with regmap_update_bits 2025-08-28 16:26:03 +02:00
tools selftests/memfd: add test for mapping write-sealed memfd read-only 2025-08-28 16:26:12 +02:00
usr kbuild: hdrcheck: fix cross build with clang 2025-06-27 11:07:25 +01:00
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Makefile kbuild: userprogs: use correct linker when mixing clang and GNU ld 2025-08-28 16:26:13 +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.