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Sampat" , Reinette Chatre , Ira Weiny , linux-kernel@vger.kernel.org, kvm@vger.kernel.org References: <20250807201628.1185915-1-sagis@google.com> <20250807201628.1185915-27-sagis@google.com> Content-Language: en-US From: Binbin Wu In-Reply-To: <20250807201628.1185915-27-sagis@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 8/8/2025 4:16 AM, Sagi Shahar wrote: > From: Ackerley Tng > > Add support for TDG.MEM.PAGE.ACCEPT that the guest uses to accept > a pending private page, previously added by TDH.MEM.PAGE.AUG or after > conversion using the KVM_SET_MEMORY_ATTRIBUTES ioctl(). KVM_SET_MEMORY_ATTRIBUTES does the invalidation and attribute change, but it doesn't add pending private pages. Actually, pending pages are still added by TDH.MEM.PAGE.AUG during fault path. > > Signed-off-by: Ackerley Tng > Signed-off-by: Sagi Shahar > --- > tools/testing/selftests/kvm/include/x86/tdx/tdx.h | 2 ++ > tools/testing/selftests/kvm/lib/x86/tdx/tdx.c | 7 +++++++ > 2 files changed, 9 insertions(+) > > diff --git a/tools/testing/selftests/kvm/include/x86/tdx/tdx.h b/tools/testing/selftests/kvm/include/x86/tdx/tdx.h > index 88f3571df16f..53637159fa12 100644 > --- a/tools/testing/selftests/kvm/include/x86/tdx/tdx.h > +++ b/tools/testing/selftests/kvm/include/x86/tdx/tdx.h > @@ -7,6 +7,7 @@ > #include "kvm_util.h" > > #define TDG_VP_INFO 1 > +#define TDG_MEM_PAGE_ACCEPT 6 > > #define TDG_VP_VMCALL_GET_TD_VM_CALL_INFO 0x10000 > #define TDG_VP_VMCALL_MAP_GPA 0x10001 > @@ -40,5 +41,6 @@ uint64_t tdg_vp_info(uint64_t *rcx, uint64_t *rdx, > uint64_t *r8, uint64_t *r9, > uint64_t *r10, uint64_t *r11); > uint64_t tdg_vp_vmcall_map_gpa(uint64_t address, uint64_t size, uint64_t *data_out); > +uint64_t tdg_mem_page_accept(uint64_t gpa, uint8_t level); > > #endif // SELFTEST_TDX_TDX_H > diff --git a/tools/testing/selftests/kvm/lib/x86/tdx/tdx.c b/tools/testing/selftests/kvm/lib/x86/tdx/tdx.c > index bae84c34c19e..a51ab7511936 100644 > --- a/tools/testing/selftests/kvm/lib/x86/tdx/tdx.c > +++ b/tools/testing/selftests/kvm/lib/x86/tdx/tdx.c > @@ -3,6 +3,7 @@ > #include > #include > > +#include "processor.h" > #include "tdx/tdcall.h" > #include "tdx/tdx.h" > #include "tdx/tdx_util.h" > @@ -215,3 +216,9 @@ uint64_t tdg_vp_vmcall_map_gpa(uint64_t address, uint64_t size, uint64_t *data_o > *data_out = args.r11; > return ret; > } > + > +uint64_t tdg_mem_page_accept(uint64_t gpa, uint8_t level) > +{ > + return __tdx_module_call(TDG_MEM_PAGE_ACCEPT, (gpa & PAGE_MASK) | level, > + 0, 0, 0, NULL); > +}