Keir Fraser da662aecc8 FROMLIST: KVM: Avoid synchronize_srcu() in kvm_io_bus_register_dev() ...

Device MMIO registration may happen quite frequently during VM boot,
and the SRCU synchronization each time has a measurable effect
on VM startup time. In our experiments it can account for around 25%
of a VM's startup time.

Replace the synchronization with a deferred free of the old kvm_io_bus
structure.

Bug: 395485007
Bug: 357781595
Link: https://lore.kernel.org/all/20250624092256.1105524-4-keirf@google.com/

Change-Id: I52af8db54259f4423e3dcdfa298573944796d88d
Signed-off-by: Keir Fraser <keirf@google.com>

2025-07-11 03:09:09 -07:00

..

async_pf.c

…

async_pf.h

…

binary_stats.c

…

coalesced_mmio.c

…

coalesced_mmio.h

…

dirty_ring.c

…

eventfd.c

KVM: Allow building irqbypass.ko as as module when kvm.ko is a module

2025-04-20 10:15:54 +02:00

guest_memfd.c

KVM: Add member to struct kvm_gfn_range to indicate private/shared

2025-05-22 14:29:36 +02:00

irqchip.c

…

Kconfig

KVM: Allow building irqbypass.ko as as module when kvm.ko is a module

2025-04-20 10:15:54 +02:00

kvm_main.c

FROMLIST: KVM: Avoid synchronize_srcu() in kvm_io_bus_register_dev()

2025-07-11 03:09:09 -07:00

kvm_mm.h

…

Makefile.kvm

…

pfncache.c

…

vfio.c

ANDROID: kvm/vfio: pviommu: Add set config IOCTL

2025-04-16 13:39:54 +00:00

vfio.h

…