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| author | Igor Mammedov <imammedo@redhat.com> | 2025-08-14 18:05:53 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2025-08-29 12:48:14 +0200 |
| commit | 73c520b088878682e2d3b7fa19a6366ec8d39829 (patch) | |
| tree | 4766e598cc92df2e3f4c565ff3e451e2f215ea04 /rust/qemu-api | |
| parent | 87511341c30d8c9c77178db16491a0ccacc5d64b (diff) | |
| download | qemu-73c520b088878682e2d3b7fa19a6366ec8d39829.zip qemu-73c520b088878682e2d3b7fa19a6366ec8d39829.tar.gz qemu-73c520b088878682e2d3b7fa19a6366ec8d39829.tar.bz2 | |
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) 196ea13104f (memory: Add global-locking property to memory regions)
... de7ea885c539 (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>
Diffstat (limited to 'rust/qemu-api')
0 files changed, 0 insertions, 0 deletions