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target/arm: kvm: require KVM_CAP_DEVICE_CTRL

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The device control API was added in 2013, assume that it is present.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20241024113126.44343-1-pbonzini@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Paolo Bonzini 2024-10-29 12:54:46 +00:00 • committed by Peter Maydell
parent 361dfa9757
commit 84f298ea3e
3 changed files with 13 additions and 29 deletions
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16
target/arm/kvm_arm.h
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@ -22,17 +22,15 @@
* @devid: the KVM device ID
* @group: device control API group for setting addresses
* @attr: device control API address type
* @dev_fd: device control device file descriptor (or -1 if not supported)
* @dev_fd: device control device file descriptor
* @addr_ormask: value to be OR'ed with resolved address
*
* Remember the memory region @mr, and when it is mapped by the
* machine model, tell the kernel that base address using the
* KVM_ARM_SET_DEVICE_ADDRESS ioctl or the newer device control API. @devid
* should be the ID of the device as defined by KVM_ARM_SET_DEVICE_ADDRESS or
* the arm-vgic device in the device control API.
* The machine model may map
* and unmap the device multiple times; the kernel will only be told the final
* address at the point where machine init is complete.
* Remember the memory region @mr, and when it is mapped by the machine
* model, tell the kernel that base address using the device control API.
* @devid should be the ID of the device as defined by the arm-vgic device
* in the device control API. The machine model may map and unmap the device
* multiple times; the kernel will only be told the final address at the
* point where machine init is complete.
*/
void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid, uint64_t group,
uint64_t attr, int dev_fd, uint64_t addr_ormask);