Igor Mammedov 73c520b088 memory: reintroduce BQL-free fine-grained PIO/MMIO ...

This patch brings back Jan's idea [1] of BQL-free IO access

This will let us make access to ACPI PM/HPET timers cheaper,
and prevent BQL contention in case of workload that heavily
uses the timers with a lot of vCPUs.

1) 196ea13104 (memory: Add global-locking property to memory regions)
   ... de7ea885c5 (kvm: Switch to unlocked MMIO)

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20250814160600.2327672-2-imammedo@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2025-08-29 12:48:14 +02:00

..

accel-blocker.h

…

address-spaces.h

include/system: Move exec/address-spaces.h to system/address-spaces.h

2025-04-23 14:08:21 -07:00

arch_init.h

system: Replace arch_type global by qemu_arch_available() helper

2025-03-11 20:03:26 +01:00

balloon.h

…

block-backend-common.h

…

block-backend-global-state.h

block-backend: mark blk_io_limits_disable() as GRAPH_UNLOCKED

2025-07-14 15:42:12 +02:00

block-backend-io.h

block: Improve blk_get_attached_dev_id() docstring

2025-02-06 13:59:00 +01:00

block-backend.h

…

block-ram-registrar.h

…

blockdev.h

…

confidential-guest-support.h

backends/confidential-guest-support: Add set_guest_policy() function

2025-07-12 15:28:21 +02:00

cpu-throttle.h

…

cpu-timers-internal.h

…

cpu-timers.h

include/exec: Split out icount.h

2025-04-23 14:08:44 -07:00

cpus.h

accel/dummy: Extract 'dummy-cpus.h' header from 'system/cpus.h'

2025-07-04 14:43:46 +02:00

cryptodev-vhost-user.h

…

cryptodev-vhost.h

…

cryptodev.h

…

device_tree.h

hw: Centralize handling of -machine dumpdtb option

2025-02-24 15:03:42 +00:00

dirtylimit.h

…

dirtyrate.h

…

dma.h

include/system: Move exec/address-spaces.h to system/address-spaces.h

2025-04-23 14:08:21 -07:00

dump-arch.h

…

dump.h

…

event-loop-base.h

…

host_iommu_device.h

vfio/iommufd: Save vendor specific device info

2025-06-05 10:40:38 +02:00

hostmem.h

include/system: Move exec/memory.h to system/memory.h

2025-04-23 14:08:21 -07:00

hvf_int.h

accel: Extract AccelClass definition to 'accel/accel-ops.h'

2025-07-15 19:34:33 +02:00

hvf.h

accel/hvf: Restrict internal declarations

2025-07-04 14:43:45 +02:00

hw_accel.h

accel/system: Document cpu_synchronize_state_post_init/reset()

2025-07-04 14:43:46 +02:00

igvm-cfg.h

sev: Provide sev_features flags from IGVM VMSA to KVM_SEV_INIT2

2025-07-12 15:28:21 +02:00

iommufd.h

vfio/iommufd: register container for cpr

2025-07-03 13:42:28 +02:00

ioport.h

include/system: Move exec/ioport.h to system/ioport.h

2025-04-23 14:08:21 -07:00

iothread.h

…

kvm_int.h

accel: Extract AccelClass definition to 'accel/accel-ops.h'

2025-07-15 19:34:33 +02:00

kvm_xen.h

…

kvm.h

kvm/kvm-all: make kvm_park/unpark_vcpu local to kvm-all.c

2025-08-27 10:57:03 +02:00

memory_mapping.h

…

memory.h

memory: reintroduce BQL-free fine-grained PIO/MMIO

2025-08-29 12:48:14 +02:00

numa.h

…

nvmm.h

accel/nvmm: Expose nvmm_enabled() to common code

2025-07-04 14:43:46 +02:00

os-posix.h

os: add an ability to lock memory on_fault

2025-02-12 11:36:01 -05:00

os-wasm.h

include/qemu/osdep.h: Add Emscripten-specific OS dependencies

2025-05-06 16:02:04 +02:00

os-win32.h

cleanup: Drop pointless return at end of function

2025-04-24 09:33:42 +02:00

qtest.h

include/system: Remove ifndef CONFIG_USER_ONLY in qtest.h

2025-04-23 14:08:44 -07:00

ram_addr.h

include: Remove 'exec/exec-all.h'

2025-04-30 12:45:05 -07:00

ramblock.h

physmem: Support coordinated discarding of RAM with guest_memfd

2025-06-23 16:03:59 -04:00

replay.h

meson: Only allow CONFIG_USER_ONLY from certain source sets

2025-04-23 14:08:44 -07:00

reset.h

…

rng-random.h

…

rng.h

…

rtc.h

…

runstate-action.h

…

runstate.h

Merge tag 'accel-20250715' of https://github.com/philmd/qemu into staging

2025-07-16 07:13:40 -04:00

seccomp.h

…

spdm-socket.h

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stats.h

…

system.h

overcommit: introduce mem-lock=on-fault

2025-02-12 11:36:13 -05:00

tcg.h

tcg: Move qemu_tcg_mttcg_enabled() to 'system/tcg.h'

2025-04-23 15:07:32 -07:00

tpm_backend.h

…

tpm_util.h

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tpm.h

…

vhost-user-backend.h

vhost-user: return failure if backend crash when live migration

2025-05-14 05:39:15 -04:00

watchdog.h

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whpx.h

accel/whpx: Expose whpx_enabled() to common code

2025-07-04 14:43:46 +02:00

xen-mapcache.h

system/xen: remove inline stubs

2025-04-23 13:52:37 -07:00

xen.h

meson: Only allow CONFIG_USER_ONLY from certain source sets

2025-04-23 14:08:44 -07:00