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Sean Christopherson 9129633d56 KVM: x86/mmu: Prevent installing hugepages when mem attributes are changing
When changing memory attributes on a subset of a potential hugepage, add
the hugepage to the invalidation range tracking to prevent installing a
hugepage until the attributes are fully updated.  Like the actual hugepage
tracking updates in kvm_arch_post_set_memory_attributes(), process only
the head and tail pages, as any potential hugepages that are entirely
covered by the range will already be tracked.

Note, only hugepage chunks whose current attributes are NOT mixed need to
be added to the invalidation set, as mixed attributes already prevent
installing a hugepage, and it's perfectly safe to install a smaller
mapping for a gfn whose attributes aren't changing.

Fixes: 8dd2eee9d5 ("KVM: x86/mmu: Handle page fault for private memory")
Cc: stable@vger.kernel.org
Reported-by: Michael Roth <michael.roth@amd.com>
Tested-by: Michael Roth <michael.roth@amd.com>
Link: https://lore.kernel.org/r/20250430220954.522672-1-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2025-05-02 13:39:34 -07:00
arch KVM: x86/mmu: Prevent installing hugepages when mem attributes are changing 2025-05-02 13:39:34 -07:00
block treewide: Switch/rename to timer_delete[_sync]() 2025-04-05 10:30:12 +02:00
certs
crypto This push fixes reverts the multibuffer hash testing as it is buggy. 2025-04-02 09:14:59 -07:00
Documentation A few more miscellaneous ext4 bug fixes and cleanups including some 2025-04-13 07:15:50 -07:00
drivers iommu/amd: WARN if KVM attempts to set vCPU affinity without posted intrrupts 2025-04-24 09:52:31 -04:00
fs Changes since last update: 2025-04-13 10:52:04 -07:00
include drm fixes for 6.15-rc2 2025-04-10 20:30:06 -07:00
init Miscellaneous scheduler fixes/updates: 2025-04-06 10:44:58 -07:00
io_uring io_uring/kbuf: reject zero sized provided buffers 2025-04-07 07:51:23 -06:00
ipc
kernel tracing fixes for v6.15 2025-04-12 15:37:40 -07:00
lib CRC cleanups for 6.15 2025-04-08 12:09:28 -07:00
LICENSES
mm Disable SLUB_TINY for build testing 2025-04-06 10:00:04 -07:00
net bpf-fixes 2025-04-12 12:48:10 -07:00
rust Kbuild updates for v6.15 2025-04-05 15:46:50 -07:00
samples treewide: Switch/rename to timer_delete[_sync]() 2025-04-05 10:30:12 +02:00
scripts Disable SLUB_TINY for build testing 2025-04-06 10:00:04 -07:00
security mseal sysmap: kernel config and header change 2025-04-01 15:17:14 -07:00
sound soundwire fix for 6.15-rc1 2025-04-06 12:04:53 -07:00
tools memblock: fix build of memblock test 2025-04-13 07:11:33 -07:00
usr
virt ARM: 2025-04-08 13:47:55 -07:00
.clang-format
.clippy.toml
.cocciconfig
.editorconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap mailmap: add an entry for Nicolas Schier 2025-04-01 15:20:45 -07:00
.rustfmt.toml
COPYING
CREDITS Including fixes from netfilter. 2025-04-04 09:15:35 -07:00
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: add more keywords for the GPIO subsystem entry 2025-04-08 10:41:58 +02:00
Makefile Linux 6.15-rc2 2025-04-13 11:54:49 -07:00
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.