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[v19,007/130] x86/virt/tdx: Export SEAMCALL functions

Message ID	8f64043a6c393c017347bf8954d92b84b58603ec.1708933498.git.isaku.yamahata@intel.com
State	New
Headers	Received-SPF: pass (google.com: domain of linux-kernel+bounces-80768-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249; From: isaku.yamahata@intel.com To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com, Paolo Bonzini <pbonzini@redhat.com>, erdemaktas@google.com, Sean Christopherson <seanjc@google.com>, Sagi Shahar <sagis@google.com>, Kai Huang <kai.huang@intel.com>, chen.bo@intel.com, hang.yuan@intel.com, tina.zhang@intel.com Subject: [PATCH v19 007/130] x86/virt/tdx: Export SEAMCALL functions Date: Mon, 26 Feb 2024 00:25:09 -0800 Message-Id: <8f64043a6c393c017347bf8954d92b84b58603ec.1708933498.git.isaku.yamahata@intel.com> In-Reply-To: <cover.1708933498.git.isaku.yamahata@intel.com> References: <cover.1708933498.git.isaku.yamahata@intel.com> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-getmail-retrieved-from-mailbox: INBOX
Series	[v19,001/130] x86/virt/tdx: Rename _offset to _member for TD_SYSINFO_MAP() macro \| [v19,001/130] x86/virt/tdx: Rename _offset to _member for TD_SYSINFO_MAP() macro [v19,002/130] x86/virt/tdx: Move TDMR metadata fields map table to local variable [v19,003/130] x86/virt/tdx: Unbind global metadata read with 'struct tdx_tdmr_sysinfo' [v19,004/130] x86/virt/tdx: Support global metadata read for all element sizes [v19,005/130] x86/virt/tdx: Export global metadata read infrastructure [v19,006/130] x86/virt/tdx: Export TDX KeyID information [v19,007/130] x86/virt/tdx: Export SEAMCALL functions [v19,008/130] x86/tdx: Warning with 32bit build shift-count-overflow [v19,009/130] KVM: x86: Add gmem hook for determining max NPT mapping level [v19,010/130] KVM: x86: Pass is_private to gmem hook of gmem_max_level [v19,011/130] KVM: Add new members to struct kvm_gfn_range to operate on [v19,012/130] KVM: x86/mmu: Pass around full 64-bit error code for the KVM page fault [v19,013/130] KVM: x86: Use PFERR_GUEST_ENC_MASK to indicate fault is private [v19,014/130] KVM: Add KVM vcpu ioctl to pre-populate guest memory [v19,015/130] KVM: Document KVM_MEMORY_MAPPING ioctl [v19,016/130] KVM: x86/mmu: Introduce kvm_mmu_map_tdp_page() for use by TDX [v19,017/130] KVM: x86: Implement kvm_arch_{, pre_}vcpu_memory_mapping() [v19,018/130] KVM: x86/mmu: Assume guest MMIOs are shared [v19,019/130] KVM: x86: Add is_vm_type_supported callback [v19,020/130] KVM: VMX: Move out vmx_x86_ops to 'main.c' to wrap VMX and TDX [v19,021/130] KVM: x86/vmx: initialize loaded_vmcss_on_cpu in vmx_init() [v19,022/130] KVM: x86/vmx: Refactor KVM VMX module init/exit functions [v19,023/130] KVM: TDX: Initialize the TDX module when loading the KVM intel kernel module [v19,024/130] KVM: TDX: Add placeholders for TDX VM/vcpu structure [v19,025/130] KVM: TDX: Make TDX VM type supported [v19,026/130,MARKER] The start of TDX KVM patch series: TDX architectural definitions [v19,027/130] KVM: TDX: Define TDX architectural definitions [v19,028/130] KVM: TDX: Add TDX "architectural" error codes [v19,029/130] KVM: TDX: Add C wrapper functions for SEAMCALLs to the TDX module [v19,030/130] KVM: TDX: Add helper functions to print TDX SEAMCALL error [v19,031/130,MARKER] The start of TDX KVM patch series: TD VM creation/destruction [v19,032/130] KVM: TDX: Add helper functions to allocate/free TDX private host key id [v19,033/130] KVM: TDX: Add helper function to read TDX metadata in array [v19,034/130] KVM: TDX: Get system-wide info about TDX module on initialization [v19,035/130] KVM: TDX: Add place holder for TDX VM specific mem_enc_op ioctl [v19,036/130] KVM: TDX: x86: Add ioctl to get TDX systemwide parameters [v19,037/130] KVM: TDX: Make KVM_CAP_MAX_VCPUS backend specific [v19,038/130] KVM: TDX: create/destroy VM structure [v19,039/130] KVM: TDX: initialize VM with TDX specific parameters [v19,040/130] KVM: TDX: Make pmu_intel.c ignore guest TD case [v19,041/130] KVM: TDX: Refuse to unplug the last cpu on the package [v19,042/130,MARKER] The start of TDX KVM patch series: TD vcpu creation/destruction [v19,043/130] KVM: TDX: create/free TDX vcpu structure [v19,044/130] KVM: TDX: Do TDX specific vcpu initialization [v19,045/130,MARKER] The start of TDX KVM patch series: KVM MMU GPA shared bits [v19,046/130] KVM: x86/mmu: Add address conversion functions for TDX shared bit of GPA [v19,047/130,MARKER] The start of TDX KVM patch series: KVM TDP refactoring for TDX [v19,048/130] KVM: Allow page-sized MMU caches to be initialized with custom 64-bit values [v19,049/130] KVM: x86/mmu: Replace hardcoded value 0 for the initial value for SPTE [v19,050/130] KVM: x86/mmu: Allow non-zero value for non-present SPTE and removed SPTE [v19,051/130] KVM: x86/mmu: Add Suppress VE bit to shadow_mmio_mask/shadow_present_mask [v19,052/130] KVM: x86/mmu: Track shadow MMIO value on a per-VM basis [v19,053/130] KVM: x86/mmu: Disallow fast page fault on private GPA [v19,054/130] KVM: VMX: Introduce test mode related to EPT violation VE [v19,055/130,MARKER] The start of TDX KVM patch series: KVM TDP MMU hooks [v19,056/130] KVM: x86/tdp_mmu: Init role member of struct kvm_mmu_page at allocation [v19,057/130] KVM: x86/mmu: Add a new is_private member for union kvm_mmu_page_role [v19,058/130] KVM: x86/mmu: Add a private pointer to struct kvm_mmu_page [v19,059/130] KVM: x86/tdp_mmu: Don't zap private pages for unsupported cases [v19,060/130] KVM: x86/tdp_mmu: Apply mmu notifier callback to only shared GPA [v19,061/130] KVM: x86/tdp_mmu: Sprinkle __must_check [v19,062/130] KVM: x86/tdp_mmu: Support TDX private mapping for TDP MMU [v19,063/130,MARKER] The start of TDX KVM patch series: TDX EPT violation [v19,064/130] KVM: x86/mmu: Do not enable page track for TD guest [v19,065/130] KVM: VMX: Split out guts of EPT violation to common/exposed function [v19,066/130] KVM: TDX: Add accessors VMX VMCS helpers [v19,067/130] KVM: TDX: Add load_mmu_pgd method for TDX [v19,068/130] KVM: TDX: Retry seamcall when TDX_OPERAND_BUSY with operand SEPT [v19,069/130] KVM: TDX: Require TDP MMU and mmio caching for TDX [v19,070/130] KVM: TDX: TDP MMU TDX support [v19,071/130] KVM: TDX: MTRR: implement get_mt_mask() for TDX [v19,072/130,MARKER] The start of TDX KVM patch series: TD finalization [v19,073/130] KVM: x86: Add hooks in kvm_arch_vcpu_memory_mapping() [v19,074/130] KVM: TDX: Create initial guest memory [v19,075/130] KVM: TDX: Extend memory measurement with initial guest memory [v19,076/130] KVM: TDX: Finalize VM initialization [v19,077/130,MARKER] The start of TDX KVM patch series: TD vcpu enter/exit [v19,078/130] KVM: TDX: Implement TDX vcpu enter/exit path [v19,079/130] KVM: TDX: vcpu_run: save/restore host state(host kernel gs) [v19,080/130] KVM: TDX: restore host xsave state when exit from the guest TD [v19,081/130] KVM: x86: Allow to update cached values in kvm_user_return_msrs w/o wrmsr [v19,082/130] KVM: TDX: restore user ret MSRs [v19,083/130] KVM: TDX: Add TSX_CTRL msr into uret_msrs list [v19,084/130,MARKER] The start of TDX KVM patch series: TD vcpu exits/interrupts/hypercalls [v19,085/130] KVM: TDX: Complete interrupts after tdexit [v19,086/130] KVM: TDX: restore debug store when TD exit [v19,087/130] KVM: TDX: handle vcpu migration over logical processor [v19,088/130] KVM: x86: Add a switch_db_regs flag to handle TDX's auto-switched behavior [v19,089/130] KVM: TDX: Add support for find pending IRQ in a protected local APIC [v19,090/130] KVM: x86: Assume timer IRQ was injected if APIC state is proteced [v19,091/130] KVM: TDX: remove use of struct vcpu_vmx from posted_interrupt.c [v19,092/130] KVM: TDX: Implement interrupt injection [v19,093/130] KVM: TDX: Implements vcpu request_immediate_exit [v19,094/130] KVM: TDX: Implement methods to inject NMI [v19,095/130] KVM: VMX: Modify NMI and INTR handlers to take intr_info as function argument [v19,096/130] KVM: VMX: Move NMI/exception handler to common helper [v19,097/130] KVM: x86: Split core of hypercall emulation to helper function [v19,098/130] KVM: TDX: Add a place holder to handle TDX VM exit [v19,099/130] KVM: TDX: Handle vmentry failure for INTEL TD guest [v19,100/130] KVM: TDX: handle EXIT_REASON_OTHER_SMI [v19,101/130] KVM: TDX: handle ept violation/misconfig exit [v19,102/130] KVM: TDX: handle EXCEPTION_NMI and EXTERNAL_INTERRUPT [v19,103/130] KVM: TDX: Handle EXIT_REASON_OTHER_SMI with MSMI [v19,104/130] KVM: TDX: Add a place holder for handler of TDX hypercalls (TDG.VP.VMCALL) [v19,105/130] KVM: TDX: handle KVM hypercall with TDG.VP.VMCALL [v19,106/130] KVM: TDX: Add KVM Exit for TDX TDG.VP.VMCALL [v19,107/130] KVM: TDX: Handle TDX PV CPUID hypercall [v19,108/130] KVM: TDX: Handle TDX PV HLT hypercall [v19,109/130] KVM: TDX: Handle TDX PV port io hypercall [v19,110/130] KVM: TDX: Handle TDX PV MMIO hypercall [v19,111/130] KVM: TDX: Implement callbacks for MSR operations for TDX [v19,112/130] KVM: TDX: Handle TDX PV rdmsr/wrmsr hypercall [v19,113/130] KVM: TDX: Handle MSR MTRRCap and MTRRDefType access [v19,114/130] KVM: TDX: Handle MSR IA32_FEAT_CTL MSR and IA32_MCG_EXT_CTL [v19,115/130] KVM: TDX: Handle TDG.VP.VMCALL<GetTdVmCallInfo> hypercall [v19,116/130] KVM: TDX: Silently discard SMI request [v19,117/130] KVM: TDX: Silently ignore INIT/SIPI [v19,118/130] KVM: TDX: Add methods to ignore accesses to CPU state [v19,119/130] KVM: TDX: Add methods to ignore guest instruction emulation [v19,120/130] KVM: TDX: Add a method to ignore dirty logging [v19,121/130] KVM: TDX: Add methods to ignore VMX preemption timer [v19,122/130] KVM: TDX: Add methods to ignore accesses to TSC [v19,123/130] KVM: TDX: Ignore setting up mce [v19,124/130] KVM: TDX: Add a method to ignore for TDX to ignore hypercall patch [v19,125/130] KVM: TDX: Add methods to ignore virtual apic related operation [v19,126/130] KVM: TDX: Inhibit APICv for TDX guest [v19,127/130] Documentation/virt/kvm: Document on Trust Domain Extensions(TDX) [v19,128/130] KVM: x86: design documentation on TDX support of x86 KVM TDP MMU [v19,129/130] RFC: KVM: x86: Add x86 callback to check cpuid [v19,130/130] RFC: KVM: x86, TDX: Add check for KVM_SET_CPUID2

Commit Message

Isaku Yamahata Feb. 26, 2024, 8:25 a.m. UTC

  From: Kai Huang <kai.huang@intel.com>

KVM will need to make SEAMCALLs to create and run TDX guests.  Export
SEAMCALL functions for KVM to use.

Also add declaration of SEAMCALL functions to <asm/asm-prototypes.h> to
support CONFIG_MODVERSIONS=y.

Signed-off-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
 arch/x86/include/asm/asm-prototypes.h | 1 +
 arch/x86/virt/vmx/tdx/seamcall.S      | 4 ++++
 2 files changed, 5 insertions(+)

diff mbox series

Patch

diff --git a/arch/x86/include/asm/asm-prototypes.h b/arch/x86/include/asm/asm-prototypes.h
index b1a98fa38828..0ec572ad75f1 100644
--- a/arch/x86/include/asm/asm-prototypes.h
+++ b/arch/x86/include/asm/asm-prototypes.h
@@ -13,6 +13,7 @@ 
 #include <asm/preempt.h>
 #include <asm/asm.h>
 #include <asm/gsseg.h>
+#include <asm/tdx.h>
 
 #ifndef CONFIG_X86_CMPXCHG64
 extern void cmpxchg8b_emu(void);
diff --git a/arch/x86/virt/vmx/tdx/seamcall.S b/arch/x86/virt/vmx/tdx/seamcall.S
index 5b1f2286aea9..e32cf82ed47e 100644
--- a/arch/x86/virt/vmx/tdx/seamcall.S
+++ b/arch/x86/virt/vmx/tdx/seamcall.S
@@ -1,5 +1,6 @@ 
 /* SPDX-License-Identifier: GPL-2.0 */
 #include <linux/linkage.h>
+#include <linux/export.h>
 #include <asm/frame.h>
 
 #include "tdxcall.S"
@@ -21,6 +22,7 @@ 
 SYM_FUNC_START(__seamcall)
 	TDX_MODULE_CALL host=1
 SYM_FUNC_END(__seamcall)
+EXPORT_SYMBOL_GPL(__seamcall);
 
 /*
  * __seamcall_ret() - Host-side interface functions to SEAM software
@@ -40,6 +42,7 @@  SYM_FUNC_END(__seamcall)
 SYM_FUNC_START(__seamcall_ret)
 	TDX_MODULE_CALL host=1 ret=1
 SYM_FUNC_END(__seamcall_ret)
+EXPORT_SYMBOL_GPL(__seamcall_ret);
 
 /*
  * __seamcall_saved_ret() - Host-side interface functions to SEAM software
@@ -59,3 +62,4 @@  SYM_FUNC_END(__seamcall_ret)
 SYM_FUNC_START(__seamcall_saved_ret)
 	TDX_MODULE_CALL host=1 ret=1 saved=1
 SYM_FUNC_END(__seamcall_saved_ret)
+EXPORT_SYMBOL_GPL(__seamcall_saved_ret);