linux/arch
Sean Christopherson 3039bcc744 KVM: Move x86's MMU notifier memslot walkers to generic code
Move the hva->gfn lookup for MMU notifiers into common code.  Every arch
does a similar lookup, and some arch code is all but identical across
multiple architectures.

In addition to consolidating code, this will allow introducing
optimizations that will benefit all architectures without incurring
multiple walks of the memslots, e.g. by taking mmu_lock if and only if a
relevant range exists in the memslots.

The use of __always_inline to avoid indirect call retpolines, as done by
x86, may also benefit other architectures.

Consolidating the lookups also fixes a wart in x86, where the legacy MMU
and TDP MMU each do their own memslot walks.

Lastly, future enhancements to the memslot implementation, e.g. to add an
interval tree to track host address, will need to touch far less arch
specific code.

MIPS, PPC, and arm64 will be converted one at a time in future patches.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210402005658.3024832-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-04-17 08:31:06 -04:00
..
alpha io_uring-worker.v3-2021-02-25 2021-02-27 08:29:02 -08:00
arc arch: setup PF_IO_WORKER threads like PF_KTHREAD 2021-02-21 17:25:22 -07:00
arm A set of irqchip updates: 2021-03-14 13:33:33 -07:00
arm64 KVM: constify kvm_arch_flush_remote_tlbs_memslot 2021-04-17 08:31:04 -04:00
csky arch/csky patches for 5.12-rc1 2021-02-28 12:06:45 -08:00
h8300 arch: setup PF_IO_WORKER threads like PF_KTHREAD 2021-02-21 17:25:22 -07:00
hexagon io_uring-worker.v3-2021-02-25 2021-02-27 08:29:02 -08:00
ia64 ia64: fix ptrace(PTRACE_SYSCALL_INFO_EXIT) sign 2021-03-13 11:27:31 -08:00
m68k m68k: Fix virt_addr_valid() W=1 compiler warnings 2021-03-06 14:15:07 +01:00
microblaze io_uring-worker.v3-2021-02-25 2021-02-27 08:29:02 -08:00
mips KVM: MIPS: defer flush to generic MMU notifier code 2021-04-17 08:31:05 -04:00
nds32 io_uring-worker.v3-2021-02-25 2021-02-27 08:29:02 -08:00
nios2 io_uring-worker.v3-2021-02-25 2021-02-27 08:29:02 -08:00
openrisc io_uring-worker.v3-2021-02-25 2021-02-27 08:29:02 -08:00
parisc arch/parisc/kernel: remove duplicate include in ptrace 2021-03-04 09:12:29 +01:00
powerpc KVM: Move arm64's MMU notifier trace events to generic code 2021-04-17 08:30:56 -04:00
riscv RISC-V Patches for the 5.12 Merge Window, Part 2 2021-02-28 12:01:23 -08:00
s390 KVM: s390x: implement KVM_CAP_SET_GUEST_DEBUG2 2021-04-17 08:31:03 -04:00
sh io_uring-worker.v3-2021-02-25 2021-02-27 08:29:02 -08:00
sparc Merge git://git.kernel.org:/pub/scm/linux/kernel/git/davem/sparc 2021-03-09 17:08:41 -08:00
um io_uring-worker.v3-2021-02-25 2021-02-27 08:29:02 -08:00
x86 KVM: Move x86's MMU notifier memslot walkers to generic code 2021-04-17 08:31:06 -04:00
xtensa io_uring-worker.v3-2021-02-25 2021-02-27 08:29:02 -08:00
.gitignore
Kconfig kbuild: remove LLVM=1 test from HAS_LTO_CLANG 2021-03-11 14:52:55 +09:00