Commit Graph

9 Commits

Author SHA1 Message Date
Philippe Mathieu-Daudé
0f64fb6743 qemu: Declare all load/store helper in 'qemu/bswap.h'
Restrict "exec/tswap.h" to the tswap*() methods,
move the load/store helpers with the other ones
declared in "qemu/bswap.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20250708215320.70426-8-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2025-07-15 02:56:39 -04:00
CLEMENT MATHIEU--DRIF
1f81edd700 memory: Allow to store the PASID in IOMMUTLBEntry
This will be useful for devices that support ATS
and need to store entries in an ATC (device IOTLB).

Signed-off-by: Clement Mathieu--Drif <clement.mathieu--drif@eviden.com>
Message-Id: <20250628180226.133285-4-clement.mathieu--drif@eviden.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2025-07-15 02:56:39 -04:00
CLEMENT MATHIEU--DRIF
4b05c720aa memory: Add permissions in IOMMUAccessFlags
This will be necessary for devices implementing ATS.
We also define a new macro IOMMU_ACCESS_FLAG_FULL in addition to
IOMMU_ACCESS_FLAG to support more access flags.
IOMMU_ACCESS_FLAG is kept for convenience and backward compatibility.

Here are the flags added (defined by the PCIe 5 specification) :
    - Execute Requested
    - Privileged Mode Requested
    - Global
    - Untranslated Only

IOMMU_ACCESS_FLAG sets the additional flags to 0

Signed-off-by: Clement Mathieu--Drif <clement.mathieu--drif@eviden.com>
Message-Id: <20250628180226.133285-3-clement.mathieu--drif@eviden.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2025-07-15 02:56:39 -04:00
Chenyi Qiang
2205b84667 memory: Unify the definiton of ReplayRamPopulate() and ReplayRamDiscard()
Update ReplayRamDiscard() function to return the result and unify the
ReplayRamPopulate() and ReplayRamDiscard() to ReplayRamDiscardState() at
the same time due to their identical definitions. This unification
simplifies related structures, such as VirtIOMEMReplayData, which makes
it cleaner.

Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta@amd.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Link: https://lore.kernel.org/r/20250612082747.51539-4-chenyi.qiang@intel.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2025-06-23 16:03:59 -04:00
Chenyi Qiang
ff1211154c memory: Change memory_region_set_ram_discard_manager() to return the result
Modify memory_region_set_ram_discard_manager() to return -EBUSY if a
RamDiscardManager is already set in the MemoryRegion. The caller must
handle this failure, such as having virtio-mem undo its actions and fail
the realize() process. Opportunistically move the call earlier to avoid
complex error handling.

This change is beneficial when introducing a new RamDiscardManager
instance besides virtio-mem. After
ram_block_coordinated_discard_require(true) unlocks all
RamDiscardManager instances, only one instance is allowed to be set for
one MemoryRegion at present.

Suggested-by: David Hildenbrand <david@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta@amd.com>
Tested-by: Alexey Kardashevskiy <aik@amd.com>
Reviewed-by: Alexey Kardashevskiy <aik@amd.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Link: https://lore.kernel.org/r/20250612082747.51539-3-chenyi.qiang@intel.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2025-06-23 16:03:59 -04:00
Chenyi Qiang
f47a672a72 memory: Export a helper to get intersection of a MemoryRegionSection with a given range
Rename the helper to memory_region_section_intersect_range() to make it
more generic. Meanwhile, define the @end as Int128 and replace the
related operations with Int128_* format since the helper is exported as
a wider API.

Suggested-by: Alexey Kardashevskiy <aik@amd.com>
Reviewed-by: Alexey Kardashevskiy <aik@amd.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta@amd.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Link: https://lore.kernel.org/r/20250612082747.51539-2-chenyi.qiang@intel.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2025-06-23 16:03:59 -04:00
Steve Sistare
e3353d63e1 vfio: return mr from vfio_get_xlat_addr
Modify memory_get_xlat_addr and vfio_get_xlat_addr to return the memory
region that the translated address is found in.  This will be needed by
CPR in a subsequent patch to map blocks using IOMMU_IOAS_MAP_FILE.

Also return the xlat offset, so we can simplify the interface by removing
the out parameters that can be trivially derived from mr and xlat.

Lastly, rename the functions to  to memory_translate_iotlb() and
vfio_translate_iotlb().

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: John Levon <john.levon@nutanix.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Link: https://lore.kernel.org/qemu-devel/1747661203-136490-1-git-send-email-steven.sistare@oracle.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
2025-06-05 10:40:38 +02:00
CLEMENT MATHIEU--DRIF
7e94e45296 memory: Store user data pointer in the IOMMU notifiers
This will help developers of ATS-capable devices to track a state.

Signed-off-by: Clement Mathieu--Drif <clement.mathieu--drif@eviden.com>
Message-Id: <20250520071823.764266-9-clement.mathieu--drif@eviden.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2025-06-01 06:38:53 -04:00
Richard Henderson
8be545ba5a include/system: Move exec/memory.h to system/memory.h
Convert the existing includes with

  sed -i ,exec/memory.h,system/memory.h,g

Move the include within cpu-all.h into a !CONFIG_USER_ONLY block.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-23 14:08:21 -07:00