Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
64 lines
1.8 KiB
ArmAsm
64 lines
1.8 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include <asm/asm-offsets.h>
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#include <asm/asm.h>
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#include <linux/linkage.h>
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#include <linux/errno.h>
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#include "../../virt/vmx/tdx/tdxcall.S"
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.section .noinstr.text, "ax"
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/*
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* __tdcall() - Used by TDX guests to request services from the TDX
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* module (does not include VMM services) using TDCALL instruction.
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*
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* __tdcall() function ABI:
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*
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* @fn (RDI) - TDCALL Leaf ID, moved to RAX
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* @args (RSI) - struct tdx_module_args for input
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*
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* Only RCX/RDX/R8-R11 are used as input registers.
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*
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* Return status of TDCALL via RAX.
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*/
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SYM_FUNC_START(__tdcall)
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TDX_MODULE_CALL host=0
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SYM_FUNC_END(__tdcall)
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/*
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* __tdcall_ret() - Used by TDX guests to request services from the TDX
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* module (does not include VMM services) using TDCALL instruction, with
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* saving output registers to the 'struct tdx_module_args' used as input.
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*
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* __tdcall_ret() function ABI:
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*
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* @fn (RDI) - TDCALL Leaf ID, moved to RAX
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* @args (RSI) - struct tdx_module_args for input and output
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*
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* Only RCX/RDX/R8-R11 are used as input/output registers.
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*
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* Return status of TDCALL via RAX.
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*/
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SYM_FUNC_START(__tdcall_ret)
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TDX_MODULE_CALL host=0 ret=1
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SYM_FUNC_END(__tdcall_ret)
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/*
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* __tdcall_saved_ret() - Used by TDX guests to request services from the
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* TDX module (including VMM services) using TDCALL instruction, with
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* saving output registers to the 'struct tdx_module_args' used as input.
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*
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* __tdcall_saved_ret() function ABI:
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*
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* @fn (RDI) - TDCALL leaf ID, moved to RAX
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* @args (RSI) - struct tdx_module_args for input/output
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*
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* All registers in @args are used as input/output registers.
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*
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* On successful completion, return the hypercall error code.
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*/
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SYM_FUNC_START(__tdcall_saved_ret)
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TDX_MODULE_CALL host=0 ret=1 saved=1
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SYM_FUNC_END(__tdcall_saved_ret)
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