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>
65 lines
2.0 KiB
ArmAsm
65 lines
2.0 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/linkage.h>
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#include <asm/frame.h>
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#include "tdxcall.S"
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/*
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* __seamcall() - Host-side interface functions to SEAM software
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* (the P-SEAMLDR or the TDX module).
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*
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* __seamcall() function ABI:
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*
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* @fn (RDI) - SEAMCALL Leaf number, 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 (via RAX) TDX_SEAMCALL_VMFAILINVALID if the SEAMCALL itself
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* fails, or the completion status of the SEAMCALL leaf function.
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*/
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SYM_FUNC_START(__seamcall)
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TDX_MODULE_CALL host=1
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SYM_FUNC_END(__seamcall)
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/*
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* __seamcall_ret() - Host-side interface functions to SEAM software
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* (the P-SEAMLDR or the TDX module), with saving output registers to
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* the 'struct tdx_module_args' used as input.
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*
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* __seamcall_ret() function ABI:
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*
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* @fn (RDI) - SEAMCALL Leaf number, 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 (via RAX) TDX_SEAMCALL_VMFAILINVALID if the SEAMCALL itself
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* fails, or the completion status of the SEAMCALL leaf function.
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*/
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SYM_FUNC_START(__seamcall_ret)
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TDX_MODULE_CALL host=1 ret=1
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SYM_FUNC_END(__seamcall_ret)
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/* KVM requires non-instrumentable __seamcall_saved_ret() for TDH.VP.ENTER */
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.section .noinstr.text, "ax"
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/*
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* __seamcall_saved_ret() - Host-side interface functions to SEAM software
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* (the P-SEAMLDR or the TDX module), with saving output registers to the
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* 'struct tdx_module_args' used as input.
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*
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* __seamcall_saved_ret() function ABI:
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*
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* @fn (RDI) - SEAMCALL Leaf number, 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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* All registers in @args are used as input/output registers.
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*
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* Return (via RAX) TDX_SEAMCALL_VMFAILINVALID if the SEAMCALL itself
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* fails, or the completion status of the SEAMCALL leaf function.
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*/
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SYM_FUNC_START(__seamcall_saved_ret)
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TDX_MODULE_CALL host=1 ret=1 saved=1
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SYM_FUNC_END(__seamcall_saved_ret)
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