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Merge tag 'pull-loongarch-20250928' of https://github.com/bibo-mao/qemu into staging
loongarch queue
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# gpg: Signature made Sun 28 Sep 2025 01:11:39 AM PDT
# gpg: using EDDSA key 0D8642A3A2659F80B0B3D1A41F7B0C1251ACE7D1
# gpg: Good signature from "bibo mao <maobibo@loongson.cn>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 7044 3A00 19C0 E97A 31C7 13C4 8E86 8FB7 A176 9D4C
# Subkey fingerprint: 0D86 42A3 A265 9F80 B0B3 D1A4 1F7B 0C12 51AC E7D1
* tag 'pull-loongarch-20250928' of https://github.com/bibo-mao/qemu:
target/loongarch: Only flush one TLB entry in helper_invtlb_page_asid()
target/loongarch: Only flush one TLB entry in helper_invtlb_page_asid_or_g()
target/loongarch: Invalid tlb entry in invalidate_tlb()
target/loongarch: Use loongarch_tlb_search_cb in helper_invtlb_page_asid
target/loongarch: Use loongarch_tlb_search_cb in helper_invtlb_page_asid_or_g
target/loongarch: Change return value type with loongarch_tlb_search_cb()
target/loongarch: Add common API loongarch_tlb_search_cb()
target/loongarch: Add tlb search callback in loongarch_tlb_search()
target/loongarch: Fix page size set issue with CSR_STLBPS
target/loongarch: Update TLB index selection method
target/loongarch: Reduce TLB flush with helper_tlbwr
target/loongarch: Add parameter tlb pointer with fill_tlb_entry
target/loongarch: Use mmu idx bitmap method when flush TLB
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
implement the read-clear feature for CSR_MSGIR register.
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20250916122109.749813-11-gaosong@loongson.cn>
Add CSR_ESTAT.bit15 and CSR_ECFG.bit15 for DINTC irq.
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20250916122109.749813-10-gaosong@loongson.cn>
include CSR_MSGIS0-3, CSR_MSGIR and CSR_MSGIE.
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20250916122109.749813-6-gaosong@loongson.cn>
dmsi feature is added in LoongArchVirtMachinState, and it is used
to check whether virt machine supports the directy Message-Interrupts.
and by default set dmsi with ON_OFF_AUTO_AUTO.
LoongArchVirtMachineState adds misc_feature and misc_status for misc
features and status. and set the default dintc feature bit.
Msgint feature is added in LoongArchCPU, and it is used to check
whether th cpu supports the Message-Interrupts and by default set
mesgint with ON_OFF_AUTO_AUTO.
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Message-ID: <20250916122109.749813-3-gaosong@loongson.cn>
move some machine define to virt.h
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Message-ID: <20250916122109.749813-2-gaosong@loongson.cn>
With function helper_invtlb_page_asid(), only one TLB entry in
LoongArch emulated TLB is invalidated. so with QEMU TLB, it is not
necessary to flush all QEMU TLB, only flush address range specified
LoongArch emulated TLB is ok. Here invalidate_tlb_entry() is called
so that only QEMU TLB entry with specified address range is flushed.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With function helper_invtlb_page_asid_or_g(), only one TLB entry in
LoongArch emulated TLB is invalidated. so with QEMU TLB, it is not
necessary to flush all QEMU TLB, only flush address range specified
LoongArch emulated TLB is ok. Here invalidate_tlb_entry() is called
so that only QEMU TLB entry with specified address range is flushed.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Invalid tlb entry in function invalidate_tlb(), and its usage is
simple and easy to use.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
With function helper_invtlb_page_asid(), currently it is to search
TLB entry one by one. Instead STLB can be searched at first with hash
method, and then search MTLB with one by one method
Here common API loongarch_tlb_search_cb() is used in function
helper_invtlb_page_asid()
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With function helper_invtlb_page_asid_or_g(), currently it is to
search TLB entry one by one. Instead STLB can be searched at first
with hash method, and then search MTLB with one by one method.
Here common API loongarch_tlb_search_cb() is used in function
helper_invtlb_page_asid_or_g().
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With function loongarch_tlb_search_cb(), change return value type from
bool type to pointer LoongArchTLB *, the pointer type can be use directly
in future.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Common API loongarch_tlb_search_cb() is added here to search TLB entry
with specified address.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With function loongarch_tlb_search(), it is to search TLB entry with
speficied virtual address, the difference is selection with asid and
global bit. Here add selection callback with asid and global bit.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
When modify register CSR_STLBPS, the page size should come from
input parameter rather than old value.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
With function helper_tlbfill(), since there is no suitable TLB entry,
new TLB will be added and flush one old TLB entry. The old TLB entry
index is selected randomly now, instead it can be optimized as
following:
1. invalid TLB entry can be selected at first.
2. TLB entry with other ASID can be selected secondly
3. random method is used by last.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With function helper_tlbwr(), specified LoongArch TLB entry will be
updated. There are two PTE pages in one TLB entry called even/odd
pages. Supposing even/odd page is normal/none state, when odd page
is added, TLB entry is changed as normal/normal state and even page
keeps unchanged.
In this situation, it is not necessary to flush QEMU TLB since even
page keep unchanged and odd page is newly changed. Here check whether
PTE page is the same or not, TLB flush can be skipped if both are the
same or newly added.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With function fill_tlb_entry(), it will update LoongArch emulated
TLB information. Here parameter tlb pointer is added so that TLB
entry will be updated based on relative TLB CSR registers.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With API tlb_flush_range_by_mmuidx(), bitmap of mmu idx should be used
rather than itself. Also bitmap of MMU_KERNEL_IDX and MMU_USER_IDX are
used rather than that of current running mmu idx when flush TLB.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With BSP core, it boots from aux boot code and loads data into register
A0-A2 and PC. Pre-boot setting is not unnecessary and can be removed.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20250906070200.3749326-3-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
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Merge tag 'pull-loongarch-20250829' of https://github.com/bibo-mao/qemu into staging
loongarch queue
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# gpg: Signature made Fri 29 Aug 2025 12:05:16 PM AEST
# gpg: using EDDSA key 0D8642A3A2659F80B0B3D1A41F7B0C1251ACE7D1
# gpg: Good signature from "bibo mao <maobibo@loongson.cn>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 7044 3A00 19C0 E97A 31C7 13C4 8E86 8FB7 A176 9D4C
# Subkey fingerprint: 0D86 42A3 A265 9F80 B0B3 D1A4 1F7B 0C12 51AC E7D1
* tag 'pull-loongarch-20250829' of https://github.com/bibo-mao/qemu:
target/loongarch: Use correct address when flush tlb
target/loongarch: Use MMUContext in get_physical_address()
target/loongarch: Use MMUContext in loongarch_map_address()
target/loongarch: Use MMUContext in loongarch_get_addr_from_tlb
target/loongarch: Use MMUConext in loongarch_map_tlb_entry()
target/loongarch: Use loongarch_check_pte in loongarch_page_table_walker
target/loongarch: Add common function loongarch_check_pte()
target/loongarch: Use MMUAccessType in loongarch_map_tlb_entry()
target/loongarch: Use vaddr in get_physical_address()
target/loongarch: Add enum type TLBRet definition
target/loongarch: Add header file cpu-mmu.h
target/loongarch: Set page size in TLB entry with STLB
target/loongarch: Define function loongarch_cpu_post_init as static
target/loongarch: Move some function definition to kvm directory
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The helpers form load-acquire/store-release pair and ensure
that appropriate barriers are in place in case checks happen
outside of BQL.
Use them to replace open-coded checkers/setters across the code,
to make sure that barriers are not missed. Helpers also make code a
bit more readable.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com>
Link: https://lore.kernel.org/r/20250821155603.2422553-1-imammedo@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
With tlb_flush_range_by_mmuidx(), the virtual address is 64 bit.
However on LoongArch TLB emulation system, virtual address is
48 bit. It is necessary to signed-extend 48 bit address to 64 bit when
flush tlb, also fix address calculation issue with odd page.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With function get_physical_address(), parameter MMUContext is added
and remove parameter address, prot and address.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With function loongarch_map_address(), parameter MMUContext is added
and remove parameter address, prot and address.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With function loongarch_get_addr_from_tlb(), parameter MMUContext
is added and remove parameter physical, prot and address.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With function loongarch_map_tlb_entry(), parameter MMUConext is added
and remove parameter physical, prot and address.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Function loongarch_check_pte() can get physical address and access
priviledge, it works on both TLB entry and pte entry. It can be used
in function loongarch_page_table_walker() also.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Common function loongarch_check_pte() is to check tlb entry, return
the physical address and access priviledge if found. Also it can be
used with page table entry, which is used in page table walker.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Enum type MMUAccessType is used in function loongarch_map_tlb_entry()
rather than int type, and keep consistent with its caller function.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Replace target_ulong type with vaddr in function get_physical_address()
and the same with its calling functions.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
There is mixed usage between enum variable TLBRET_xxx and int type,
here add enum type TLBRet definition and replace int type variable
with enum type TLBRet in some functions.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
New header file cpu-mmu.h is added and move mmu relative function
declaration to this file.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
With VTLB different TLB entry may have different page size, and
page size is set in PS field of TLB entry. However with STLB, all
the TLB entries have the same page size, page size comes from register
CSR_STLBPS, PS field of TLB entry is not used.
Here PS field of TLB entry is used with all TLB entries, even with
STLB. It is convenient with TLB maintainance operation.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Function loongarch_cpu_post_init() is implemented and used in the
same file target/loongarch/cpu.c, it can be defined as static function.
This patch moves implementation about function loongarch_cpu_post_init()
before it is referenced. And it is only code movement, no function
change.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Move function definition specified with kvm to the corresponding
directory. Also remove header file "cpu.h" including outside of
macro QEMU_KVM_LOONGARCH_H.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This patch replaces uses of the generic TRANS macro with TRANS64 for
instructions that are only valid when 64-bit support is available.
This improves correctness and avoids potential assertion failures or
undefined behavior during translation on 32-bit-only configurations.
Signed-off-by: WANG Rui <wangrui@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
According to the specification, [X]VLDI should trigger an invalid instruction
exception only when Bit[12] is 1 and Bit[11:8] > 12. This patch fixes an issue
where an exception was incorrectly raised even when Bit[12] was 0.
Test case:
```
.global main
main:
vldi $vr0, 3328
ret
```
Reported-by: Zhou Qiankang <wszqkzqk@qq.com>
Signed-off-by: WANG Rui <wangrui@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20250804132212.4816-1-wangrui@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
On LoongArch64 system, the high 32 bit of 64 bit virtual address should be
0x00000[0-7]yyy or 0xffff8yyy. The bit from 47 to 63 should be all 0 or
all 1.
Function get_physical_address() only checks bit 48 to 63, there will be
problem with the following test case. On physical machine, there is bus
error report and program exits abnormally. However on qemu TCG system
emulation mode, the program runs normally. The virtual address
0xffff000000000000ULL + addr and addr are treated the same on TLB entry
checking. This patch fixes this issue.
void main()
{
void *addr, *addr1;
int val;
addr = malloc(100);
*(int *)addr = 1;
addr1 = 0xffff000000000000ULL + addr;
val = *(int *)addr1;
printf("val %d \n", val);
}
Cc: qemu-stable@nongnu.org
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20250714015446.746163-1-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20250708215320.70426-2-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Page size of TLB entry comes from CSR STLBPS and pwcl register. With
huge page, it is dir_base + dir_width from pwcl register. With normal
page, it is field of PTBASE from pwcl register.
So it is ok to check validity in function helper_ldpte() and function
helper_csrwr_stlbps(). And it is unnecessary in tlb entry fill path.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Function helper_csrwr_stlbps() is emulation with CSR STLBPS register
write operation. However there is only parameter checking action, and
no register updating action. Here update value of CSR_STLBPS when
parameter passes to check.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
There is small typo issue in function helper_csrwr_pwcl(), this patch
corrects this issue.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
After the docs directory restructuring, several comments
refer to paths that no longer exist.
Replace these references to the current file locations
so readers can find the correct files.
Related commits
---------------
189c099f75 (Jul 2021)
docs: collect the disparate device emulation docs into one section
Rename docs/system/{ => devices}/nvme.rst
5f4c96b779 (Feb 2023)
docs/system/loongarch: update loongson3.rst and rename it to virt.rst
Rename docs/system/loongarch/{loongson3.rst => virt.rst}
fe0007f3c1 (Sep 2023)
exec: Rename cpu.c -> cpu-target.c
Rename cpus-common.c => cpu-common.c
42fa9665e5 (Apr 2025)
exec: Restrict 'cpu_ldst.h' to accel/tcg/
Rename include/{exec/cpu_ldst.h => accel/tcg/cpu-ldst.h}
Signed-off-by: Sean Wei <me@sean.taipei>
Message-ID: <20250616.qemu.relocated.06@sean.taipei>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
on qemu we got an aborted error
**
ERROR:../target/loongarch/tcg/insn_trans/trans_vec.c.inc:3574:vldi_get_value: code should not be reached
Bail out! ERROR:../target/loongarch/tcg/insn_trans/trans_vec.c.inc:3574:vldi_get_value: code should not be reached
Aborted (core dumped)
but on 3A600/3A5000 we got a "Illegal instruction" error.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2971
Fixes: 29bb5d727f ("target/loongarch: Implement vldi")
Cc: qemu-stable@nongnu.org
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
If kvm_irqchip_in_kernel() return true, interrupt controller
ExtIOI, IPI, PCH_PCI and PCH_MSI should be emlated in kernel. And
it is not necessary to create memory region for these devices in
user space.
Reviewed-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Message-ID: <20250606063607.2557540-1-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Option kernel_irqchip=split is not supported on LoongArch virt machine,
report error and exit if detect split kernel_irqchip option.
Reviewed-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Message-ID: <20250606063431.2557468-1-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
fcond only has 22 types, add a check for fcond.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2972
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250603024810.350510-1-gaosong@loongson.cn>
* target/i386/emulate: more lflags cleanups
* meson: remove need for explicit listing of dependencies in hw_common_arch and
target_common_arch
* rust: small fixes
* hpet: Reorganize register decoding to be more similar to Rust code
* target/i386: fixes for AMD models
* target/i386: new EPYC-Turin CPU model
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging
* target/i386/kvm: Intel TDX support
* target/i386/emulate: more lflags cleanups
* meson: remove need for explicit listing of dependencies in hw_common_arch and
target_common_arch
* rust: small fixes
* hpet: Reorganize register decoding to be more similar to Rust code
* target/i386: fixes for AMD models
* target/i386: new EPYC-Turin CPU model
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# gpg: Signature made Thu 29 May 2025 03:05:00 EDT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (77 commits)
target/i386/tcg/helper-tcg: fix file references in comments
target/i386: Add support for EPYC-Turin model
target/i386: Update EPYC-Genoa for Cache property, perfmon-v2, RAS and SVM feature bits
target/i386: Add couple of feature bits in CPUID_Fn80000021_EAX
target/i386: Update EPYC-Milan CPU model for Cache property, RAS, SVM feature bits
target/i386: Update EPYC-Rome CPU model for Cache property, RAS, SVM feature bits
target/i386: Update EPYC CPU model for Cache property, RAS, SVM feature bits
rust: make declaration of dependent crates more consistent
docs: Add TDX documentation
i386/tdx: Validate phys_bits against host value
i386/tdx: Make invtsc default on
i386/tdx: Don't treat SYSCALL as unavailable
i386/tdx: Fetch and validate CPUID of TD guest
target/i386: Print CPUID subleaf info for unsupported feature
i386: Remove unused parameter "uint32_t bit" in feature_word_description()
i386/cgs: Introduce x86_confidential_guest_check_features()
i386/tdx: Define supported KVM features for TDX
i386/tdx: Add XFD to supported bit of TDX
i386/tdx: Add supported CPUID bits relates to XFAM
i386/tdx: Add supported CPUID bits related to TD Attributes
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
