Leverage and extend KVM's macro shenanigans to export symbols for KVM if
and only if kvm{,-amd,intel}.ko is being built as a module, and only for
the KVM modules that are being built.
Note, this approach isn't 100% precise, as exports that are only strictly
necessary for one of KVM's modules will get exported for all KVM modules.
But I don't see any value in being super precise as it's not like kvm.ko is
any more trustworthy tha kvm-{amd,intel}.ko (and it's easy to circumvent
"for module" exports by abusing module names (in out-of-tree code)). And
maintaining precise exports would likely be a nightmare (as would writing
the macros to get the exports right).
Patches 1-3 drop superfluous exports that I found while digging around for
KVM-only exports.
Sean Christopherson (4):
x86/bugs: Drop unnecessary export of "x86_spec_ctrl_base"
x86/mtrr: Drop unnecessary export of "mtrr_state"
x86/mm: Drop unnecessary export of "ptdump_walk_pgd_level_debugfs"
x86: Restrict KVM-induced symbol exports to KVM modules where
obvious/possible
arch/x86/entry/entry.S | 7 ++-
arch/x86/entry/entry_64.S | 3 +-
arch/x86/entry/entry_64_fred.S | 3 +-
arch/x86/events/amd/core.c | 5 ++-
arch/x86/events/core.c | 7 +--
arch/x86/events/intel/lbr.c | 3 +-
arch/x86/events/intel/pt.c | 7 +--
arch/x86/include/asm/kvm_types.h | 5 +++
arch/x86/kernel/apic/apic.c | 3 +-
arch/x86/kernel/apic/apic_common.c | 3 +-
arch/x86/kernel/cpu/amd.c | 4 +-
arch/x86/kernel/cpu/bugs.c | 18 ++++----
arch/x86/kernel/cpu/bus_lock.c | 3 +-
arch/x86/kernel/cpu/common.c | 7 +--
arch/x86/kernel/cpu/mtrr/generic.c | 1 -
arch/x86/kernel/cpu/sgx/main.c | 3 +-
arch/x86/kernel/cpu/sgx/virt.c | 5 ++-
arch/x86/kernel/e820.c | 3 +-
arch/x86/kernel/fpu/core.c | 21 ++++-----
arch/x86/kernel/fpu/xstate.c | 7 +--
arch/x86/kernel/hw_breakpoint.c | 3 +-
arch/x86/kernel/irq.c | 3 +-
arch/x86/kernel/kvm.c | 5 ++-
arch/x86/kernel/nmi.c | 5 +--
arch/x86/kernel/process_64.c | 5 +--
arch/x86/kernel/reboot.c | 5 ++-
arch/x86/kernel/tsc.c | 1 +
arch/x86/lib/cache-smp.c | 9 ++--
arch/x86/lib/msr.c | 5 ++-
arch/x86/mm/dump_pagetables.c | 1 -
arch/x86/mm/pat/memtype.c | 3 +-
arch/x86/mm/tlb.c | 5 ++-
arch/x86/virt/vmx/tdx/tdx.c | 69 +++++++++++++++---------------
include/linux/kvm_types.h | 14 ++++++
34 files changed, 144 insertions(+), 107 deletions(-)
base-commit: 19e2126bba55df9de15d9100b922df1dad6d39a4
--
2.51.2.1041.gc1ab5b90ca-goog
