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Will Deacon
6e085e0ac9
Although the SMCCC specification provides some limited functionality for describing the presence of hypervisor and firmware services, this is generally applicable only to functions designated as "Arm Architecture Service Functions" and no portable discovery mechanism is provided for standard hypervisor services, despite having a designated range of function identifiers reserved by the specification. In an attempt to avoid the need for additional firmware changes every time a new function is added, introduce a UID to identify the service provider as being compatible with KVM. Once this has been established, additional services can be discovered via a feature bitmap. Reviewed-by: Steven Price <[email protected]> Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Jianyong Wu <[email protected]> [maz: move code to its own file, plug it into PSCI] Signed-off-by: Marc Zyngier <[email protected]> Link: https://lore.kernel.org/r/[email protected]
11 lines
224 B
C
11 lines
224 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_ARM_HYPERVISOR_H
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#define _ASM_ARM_HYPERVISOR_H
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#include <asm/xen/hypervisor.h>
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void kvm_init_hyp_services(void);
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bool kvm_arm_hyp_service_available(u32 func_id);
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#endif
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