diff options
| author | Naman Jain <namjain@linux.microsoft.com> | 2025-11-13 04:41:49 +0000 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2025-12-05 23:16:26 +0000 |
| commit | 7bfe3b8ea6e30437e01fcb8e4f56ef6e4d986d0f (patch) | |
| tree | 4235d0996adfaedaa2d615822cbb2d6e5b0d5b01 /arch/x86/include | |
| parent | cffe9f58de1eb1a2cefce10c9512162fca3f7c89 (diff) | |
Drivers: hv: Introduce mshv_vtl driver
Provide an interface for Virtual Machine Monitor like OpenVMM and its
use as OpenHCL paravisor to control VTL0 (Virtual trust Level).
Expose devices and support IOCTLs for features like VTL creation,
VTL0 memory management, context switch, making hypercalls,
mapping VTL0 address space to VTL2 userspace, getting new VMBus
messages and channel events in VTL2 etc.
Co-developed-by: Roman Kisel <romank@linux.microsoft.com>
Signed-off-by: Roman Kisel <romank@linux.microsoft.com>
Co-developed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Naman Jain <namjain@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/mshyperv.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index 1342d55c2545..10037125099a 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -11,6 +11,7 @@ #include <asm/paravirt.h> #include <asm/msr.h> #include <hyperv/hvhdk.h> +#include <asm/fpu/types.h> /* * Hyper-V always provides a single IO-APIC at this MMIO address. @@ -269,13 +270,46 @@ static inline u64 hv_get_non_nested_msr(unsigned int reg) { return 0; } static inline int hv_apicid_to_vp_index(u32 apic_id) { return -EINVAL; } #endif /* CONFIG_HYPERV */ +struct mshv_vtl_cpu_context { + union { + struct { + u64 rax; + u64 rcx; + u64 rdx; + u64 rbx; + u64 cr2; + u64 rbp; + u64 rsi; + u64 rdi; + u64 r8; + u64 r9; + u64 r10; + u64 r11; + u64 r12; + u64 r13; + u64 r14; + u64 r15; + }; + u64 gp_regs[16]; + }; + + struct fxregs_state fx_state; +}; #ifdef CONFIG_HYPERV_VTL_MODE void __init hv_vtl_init_platform(void); int __init hv_vtl_early_init(void); +void mshv_vtl_return_call(struct mshv_vtl_cpu_context *vtl0); +void mshv_vtl_return_call_init(u64 vtl_return_offset); +void mshv_vtl_return_hypercall(void); +void __mshv_vtl_return_call(struct mshv_vtl_cpu_context *vtl0); #else static inline void __init hv_vtl_init_platform(void) {} static inline int __init hv_vtl_early_init(void) { return 0; } +static inline void mshv_vtl_return_call(struct mshv_vtl_cpu_context *vtl0) {} +static inline void mshv_vtl_return_call_init(u64 vtl_return_offset) {} +static inline void mshv_vtl_return_hypercall(void) {} +static inline void __mshv_vtl_return_call(struct mshv_vtl_cpu_context *vtl0) {} #endif #include <asm-generic/mshyperv.h> |