From: Lucas Amaral <lucaaamaral@gmail.com>
To: qemu-devel@nongnu.org
Cc: qemu-arm@nongnu.org, agraf@csgraf.de,
Lucas Amaral <lucaaamaral@gmail.com>
Subject: [PATCH 0/2] hvf: map granule abstraction and macOS 26 4KB IPA
Date: Mon, 9 Mar 2026 18:49:04 -0300 [thread overview]
Message-ID: <20260309214906.92578-1-lucaaamaral@gmail.com> (raw)
macOS ARM64 requires 16KB alignment for hv_vm_map(), but the guest
kernel uses 4KB pages. When virtio-gpu blob BAR offsets are not
16KB-aligned, the interior-mapping path fails, falling back to slow
MMIO emulation.
This series introduces:
1. A map granule abstraction (hvf_set/get_map_granule) replacing
hardcoded qemu_real_host_page_size() calls in HVF memory mapping.
Non-aligned regions return early instead of proceeding with
add=false (which attempted an unnecessary unmap).
2. macOS 26 4KB IPA granule support via hv_vm_config_set_ipa_granule(),
which allows HVF to map at 4KB granularity, matching the guest
kernel. Gated behind MAC_OS_VERSION_26_0 availability checks.
Dependencies: none.
Independent of: hvf-isv0-emulation and virtio-gpu-venus-nogl series.
All three QEMU series touch disjoint files and can be merged in any
order.
Lucas Amaral (2):
accel/hvf: introduce map granule abstraction
target/arm/hvf: set 4KB IPA granule on macOS 26
accel/hvf/hvf-all.c | 21 ++++++++++++++++++---
include/system/hvf.h | 15 +++++++++++++++
target/arm/hvf/hvf.c | 14 ++++++++++++++
3 files changed, 47 insertions(+), 3 deletions(-)
--
2.52.0
next reply other threads:[~2026-03-09 22:17 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-09 21:49 Lucas Amaral [this message]
2026-03-09 21:49 ` [PATCH 1/2] accel/hvf: introduce map granule abstraction Lucas Amaral
2026-03-09 21:49 ` [PATCH 2/2] target/arm/hvf: set 4KB IPA granule on macOS 26 Lucas Amaral
2026-03-10 1:25 ` Mohamed Mediouni
2026-03-11 2:27 ` [PATCH v2 0/2] hvf: map granule abstraction and configurable IPA Lucas Amaral
2026-03-11 2:27 ` [PATCH v2 1/2] accel/hvf: introduce map granule abstraction and IPA property Lucas Amaral
2026-03-11 4:38 ` Mohamed Mediouni
2026-03-11 2:27 ` [PATCH v2 2/2] target/arm/hvf: configure IPA granule on macOS 26 Lucas Amaral
2026-03-11 4:41 ` Mohamed Mediouni
2026-03-15 3:41 ` [PATCH v3 0/3] hvf: map granule abstraction, configurable IPA, and MAP_FIXED alignment fix Lucas Amaral
2026-03-15 3:41 ` [PATCH 1/3] virtio-gpu: validate host page alignment for MAP_FIXED blobs Lucas Amaral
2026-03-15 3:41 ` [PATCH 2/3] accel/hvf: introduce map granule abstraction and IPA property Lucas Amaral
2026-03-15 3:41 ` [PATCH 3/3] target/arm/hvf: configure IPA granule on macOS 26 Lucas Amaral
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