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Paolo Bonzini fd02aa45bd Merge branch 'kvm-tdx-initial' into HEAD 
This large commit contains the initial support for TDX in KVM.  All x86
parts enable the host-side hypercalls that KVM uses to talk to the TDX
module, a software component that runs in a special CPU mode called SEAM
(Secure Arbitration Mode).

The series is in turn split into multiple sub-series, each with a separate
merge commit:

- Initialization: basic setup for using the TDX module from KVM, plus
  ioctls to create TDX VMs and vCPUs.

- MMU: in TDX, private and shared halves of the address space are mapped by
  different EPT roots, and the private half is managed by the TDX module.
  Using the support that was added to the generic MMU code in 6.14,
  add support for TDX's secure page tables to the Intel side of KVM.
  Generic KVM code takes care of maintaining a mirror of the secure page
  tables so that they can be queried efficiently, and ensuring that changes
  are applied to both the mirror and the secure EPT.

- vCPU enter/exit: implement the callbacks that handle the entry of a TDX
  vCPU (via the SEAMCALL TDH.VP.ENTER) and the corresponding save/restore
  of host state.

- Userspace exits: introduce support for guest TDVMCALLs that KVM forwards to
  userspace.  These correspond to the usual KVM_EXIT_* "heavyweight vmexits"
  but are triggered through a different mechanism, similar to VMGEXIT for
  SEV-ES and SEV-SNP.

- Interrupt handling: support for virtual interrupt injection as well as
  handling VM-Exits that are caused by vectored events.  Exclusive to
  TDX are machine-check SMIs, which the kernel already knows how to
  handle through the kernel machine check handler (commit 7911f145de,
  "x86/mce: Implement recovery for errors in TDX/SEAM non-root mode")

- Loose ends: handling of the remaining exits from the TDX module, including
  EPT violation/misconfig and several TDVMCALL leaves that are handled in
  the kernel (CPUID, HLT, RDMSR/WRMSR, GetTdVmCallInfo); plus returning
  an error or ignoring operations that are not supported by TDX guests

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 		2025-04-07 07:36:33 -04:00
..
bpf bpf_try_alloc_pages 2025-03-30 13:45:28 -07:00
cgroup Merge branch 'kvm-tdx-initial' into HEAD 2025-04-07 07:36:33 -04:00
configs - The 6 patch series "Enable strict percpu address space checks" from 2025-04-01 09:29:18 -07:00
debug TTY/Serial driver updates for 6.15-rc1 2025-04-02 18:17:33 -07:00
dma dma-mapping: fix missing clear bdr in check_ram_in_range_map() 2025-03-12 13:41:44 +01:00
entry Objtool changes for v6.15: 2025-03-24 21:18:05 -07:00
events Fix a perf events time accounting bug. 2025-04-06 10:48:12 -07:00
futex futex: Use a hashmask instead of hashsize 2025-02-26 16:07:59 +01:00
gcov gcov: clang: use correct function param names 2025-01-24 22:47:27 -08:00
irq genirq/migration: Use irqd_get_parent_data() in irq_force_complete_move() 2025-04-04 17:08:36 +02:00
kcsan treewide: Switch/rename to timer_delete[_sync]() 2025-04-05 10:30:12 +02:00
livepatch Modules changes for 6.15-rc1 2025-03-30 15:44:36 -07:00
locking - The 7 patch series "powerpc/crash: use generic crashkernel 2025-04-01 10:06:52 -07:00
module ring-buffer updates for v6.15 2025-03-31 13:37:22 -07:00
power This update includes the following changes: 2025-03-29 10:01:55 -07:00
printk printk changes for 6.15 2025-03-27 19:22:24 -07:00
rcu treewide: Switch/rename to timer_delete[_sync]() 2025-04-05 10:30:12 +02:00
sched Miscellaneous scheduler fixes/updates: 2025-04-06 10:44:58 -07:00
time A set of final cleanups for the timer subsystem: 2025-04-06 08:35:37 -07:00
trace Persistent buffer cleanups and simplifications for v6.15: 2025-04-03 16:09:29 -07:00
.gitignore
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Kconfig.freezer
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Kconfig.hz kernel: Fix "select" wording on HZ_250 description 2025-02-21 09:20:30 +01:00
Kconfig.kexec crash, powerpc: default to CRASH_DUMP=n on PPC_BOOK3S_32 2024-11-14 22:43:48 -08:00
Kconfig.locks
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Kconfig.preempt sched: No PREEMPT_RT=y for all{yes,mod}config 2024-11-07 15:25:05 +01:00
Makefile tracing: Disable branch profiling in noinstr code 2025-03-22 09:49:26 +01:00
acct.c acct: block access to kernel internal filesystems 2025-02-12 12:24:16 +01:00
async.c
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audit.c audit: Initialize lsmctx to avoid memory allocation error 2025-01-29 20:02:04 -05:00
audit.h
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audit_fsnotify.c
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audit_tree.c
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audit_watch.c VFS: change kern_path_locked() and user_path_locked_at() to never return negative dentry 2025-02-19 14:08:41 +01:00
auditfilter.c audit: fix suffixed '/' filename matching 2024-12-05 19:22:38 -05:00
auditsc.c fs: dedup handling of struct filename init and refcounts bumps 2025-03-18 15:34:27 +01:00
backtracetest.c
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bounds.c
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capability.c capability: Remove unused has_capability 2025-03-07 22:03:09 -06:00
cfi.c Modules changes for 6.15-rc1 2025-03-30 15:44:36 -07:00
compat.c
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configs.c
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context_tracking.c context_tracking: Make RCU watch ct_kernel_exit_state() warning 2025-03-04 18:44:29 -08:00
cpu.c hyperv-next for 6.15 2025-03-25 14:47:04 -07:00
cpu_pm.c
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crash_core.c crash: Use note name macros 2025-02-10 16:56:58 -08:00
crash_reserve.c crash: remove an unused argument from reserve_crashkernel_generic() 2025-03-16 22:30:47 -07:00
cred.c cred: remove old {override,revert}_creds() helpers 2024-12-02 11:25:09 +01:00
delayacct.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
dma.c
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elfcorehdr.c
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exec_domain.c
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exit.c exit: fix the usage of delay_group_leader->exit_code in do_notify_parent() and pidfs_exit() 2025-03-25 15:56:22 +01:00
exit.h
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extable.c
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fail_function.c
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fork.c - The 7 patch series "powerpc/crash: use generic crashkernel 2025-04-01 10:06:52 -07:00
freezer.c
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gen_kheaders.sh Revert "kheaders: Ignore silly-rename files" 2025-03-15 21:22:52 +09:00
groups.c
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hung_task.c hung_task: show the blocker task if the task is hung on mutex 2025-03-21 22:10:04 -07:00
iomem.c mm/memremap: Pass down MEMREMAP_* flags to arch_memremap_wb() 2025-02-21 15:05:38 +01:00
irq_work.c kasan: make kasan_record_aux_stack_noalloc() the default behaviour 2025-01-13 22:40:36 -08:00
jump_label.c jump_label: Use RCU in all users of __module_text_address(). 2025-03-10 11:54:46 +01:00
kallsyms.c kallsyms: Remove KALLSYMS_ABSOLUTE_PERCPU 2025-02-18 10:16:04 +01:00
kallsyms_internal.h
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kallsyms_selftest.c kallsyms: Use kthread_run_on_cpu() 2025-01-02 22:12:12 +01:00
kallsyms_selftest.h
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kcmp.c kcmp: improve performance adding an unlikely hint to task comparisons 2025-02-21 10:25:33 +01:00
kcov.c kcov: mark in_softirq_really() as __always_inline 2024-12-30 17:59:08 -08:00
kexec.c
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kexec_core.c - The 7 patch series "powerpc/crash: use generic crashkernel 2025-04-01 10:06:52 -07:00
kexec_elf.c kexec: initialize ELF lowest address to ULONG_MAX 2025-03-16 22:30:47 -07:00
kexec_file.c crash: let arch decide usable memory range in reserved area 2025-03-16 22:30:47 -07:00
kexec_internal.h
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kheaders.c kheaders: Simplify attribute through __BIN_ATTR_SIMPLE_RO() 2024-12-24 09:46:49 +01:00
kprobes.c kprobes: Use RCU in all users of __module_text_address(). 2025-03-10 11:54:46 +01:00
ksyms_common.c
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ksysfs.c kernel/ksysfs.c: simplify bin_attribute definition 2025-01-07 16:59:15 +01:00
kthread.c treewide: Switch/rename to timer_delete[_sync]() 2025-04-05 10:30:12 +02:00
latencytop.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
module_signature.c
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notifier.c reboot: move reboot_notifier_list to kernel/reboot.c 2024-11-05 17:12:31 -08:00
nsproxy.c fdget(), trivial conversions 2024-11-03 01:28:06 -05:00
padata.c padata: switch padata_find_next() to using cpumask_next_wrap() 2025-02-24 16:37:23 -05:00
panic.c These are objtool fixes and updates by Josh Poimboeuf, centered 2025-04-02 10:30:10 -07:00
params.c params: Annotate struct module_param_attrs with __counted_by() 2025-03-10 11:54:46 +01:00
pid.c kernel-6.15-rc1.tasklist_lock 2025-03-24 13:39:27 -07:00
pid_namespace.c pid: Do not set pid_max in new pid namespaces 2025-03-06 10:18:36 +01:00
pid_sysctl.h treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
profile.c
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ptrace.c
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range.c
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reboot.c - The 7 patch series "powerpc/crash: use generic crashkernel 2025-04-01 10:06:52 -07:00
regset.c
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relay.c relay: use kasprintf() instead of fixed buffer formatting 2025-03-21 22:10:05 -07:00
resource.c resource: replace open coded variant of DEFINE_RES() 2025-03-21 22:10:05 -07:00
resource_kunit.c
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rseq.c rseq: Fix segfault on registration when rseq_cs is non-zero 2025-03-06 22:26:49 +01:00
scftorture.c scftorture: Handle NULL argument passed to scf_add_to_free_list(). 2024-11-14 16:09:51 -08:00
scs.c
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seccomp.c seccomp: avoid the lock trip seccomp_filter_release in common case 2025-02-24 11:17:10 -08:00
signal.c vfs-6.15-rc1.fixes 2025-04-02 16:05:21 -07:00
smp.c CSD-lock pull request for v6.14 2025-01-28 11:34:03 -08:00
smpboot.c
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smpboot.h
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softirq.c lockdep: Fix wait context check on softirq for PREEMPT_RT 2025-03-25 10:46:44 +01:00
stackleak.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
stacktrace.c
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static_call.c
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static_call_inline.c Modules changes for 6.15-rc1 2025-03-30 15:44:36 -07:00
stop_machine.c stop-machine: Add comment for rcu_momentary_eqs() 2025-03-11 10:15:52 -07:00
sys.c Updates for the core time/timer subsystem: 2025-03-25 10:33:23 -07:00
sys_ni.c
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sysctl-test.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
sysctl.c s390 updates for 6.15 merge window 2025-03-29 11:59:43 -07:00
task_work.c kasan: make kasan_record_aux_stack_noalloc() the default behaviour 2025-01-13 22:40:36 -08:00
taskstats.c fdget(), more trivial conversions 2024-11-03 01:28:06 -05:00
torture.c torture: Add get_torture_init_jiffies() for test-start time 2025-02-05 07:14:24 -08:00
tracepoint.c tracepoint: Print the function symbol when tracepoint_debug is set 2025-03-21 15:30:10 -04:00
tsacct.c
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ucount.c ucount: use rcuref_t for reference counting 2025-03-16 22:30:50 -07:00
uid16.c
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uid16.h
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umh.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
up.c
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user-return-notifier.c
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user.c
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user_namespace.c uidgid: add map_id_range_up() 2025-02-12 12:12:27 +01:00
usermode_driver.c
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utsname.c
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utsname_sysctl.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
vhost_task.c vhost: return task creation error instead of NULL 2025-03-01 02:52:52 -05:00
vmcore_info.c
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watch_queue.c vfs-6.15-rc1.pipe 2025-03-24 09:52:37 -07:00
watchdog.c A treewide hrtimer timer cleanup 2025-03-25 10:54:15 -07:00
watchdog_buddy.c
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watchdog_perf.c - The 7 patch series "powerpc/crash: use generic crashkernel 2025-04-01 10:06:52 -07:00
workqueue.c treewide: Switch/rename to timer_delete[_sync]() 2025-04-05 10:30:12 +02:00
workqueue_internal.h
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