From nobody Tue Apr 7 14:20:57 2026 Received: from mail-pl1-f201.google.com (mail-pl1-f201.google.com [209.85.214.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A8E1237EFFE for ; Fri, 13 Mar 2026 06:13:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773382425; cv=none; b=PWJs4nLaN/cntS8+K131WFGC/uVNH1+TMvF+8DzwN4g6YPJCpL0d7PWTBzala5F/zfsMZGZKr+nZqskf72zqVwkZ/ozR1/iSIk0AeC7ThLDK3dF6gHCPEoCuAwJ9agHav9M6WhuR1VGtwOcXqF2FxxaQ179Nxa363ai4V1lP2Gs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773382425; c=relaxed/simple; bh=aSgpCJ/+CEz5WLnq+ZIsNaLgtlURyDcAX64hYkmBOv0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=nSXUmsnxvi4dmJ1zmki9fcyo85Y9wxOv3zyx2xiqAMv/kXB8GgWiqFppSVwjOM05/WtozSUMAUbLKuLtfD978wI4XUj8DhJndw7FgjmFDWL01uut7WG0FuawyE4LYPJLvTRVI+JDof/E1coNz9Wk/SXWemxXSLSt0mTHcehny6s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--ackerleytng.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=kqRUu7Fx; arc=none smtp.client-ip=209.85.214.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--ackerleytng.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="kqRUu7Fx" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-2adc527eaf5so13880625ad.0 for ; Thu, 12 Mar 2026 23:13:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1773382420; x=1773987220; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=9BzVYsA3kNACHoMy8wwuYISEzNkcuCvKxQpW69pzKj8=; b=kqRUu7FxhBohrsFdkDVnlyyGqYOg926If7Tl6G0csOaNToi6R+5xs1g+vdjBQJTnQR g3VSFLuBHI2n3BYOcAZuyZDHdcVWRnMYvN+cUUcWengTb0xQNMB7RPikJxWsfmlaLxNc 7ybBa7F2dL+bNKI/X7JpgPCYg/+4f0Cdx61PolpJQozOgjuE4auBasSKApx6oXpiPP3I n9PiblrQEI4L96kfPJU1xUtF8x2htBdB1WreVDz6iqZAqN20bnHIzAZMncH0Dc+8QI+6 FrDnd6PR/xQq2d6FBr88aEOHKmeVCSyQ8xbgystmf4kY3Wu0GiZOsSTuJjmN1coiti1S LF/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773382420; x=1773987220; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=9BzVYsA3kNACHoMy8wwuYISEzNkcuCvKxQpW69pzKj8=; b=XOegzHq+kmnsXjqiw6vbAu0UiROHQaq47CxA60YqV9jN+6XNzYszlSW708i759tRu4 jCcBIe8fyXsAtSaLW53LACOcP70PtWUxiReNkdGwPWTyucM5klSV8Pk+JRUTbAWcLmlQ OETcyOMwFZ6OCG97jszaE6kJ3bSfgcUfxQc4vY5Mjc3Qdk4qzKG8IjhM4YZVd8rx9wXW duWWhU9MPXXUu4oLqCCGip2qiKXu05FHFXyfOGYF8mRteRCMBY/GEMfj42wTWEFm7JqZ Qx7+LWwLv19cXeH/HVdK+DJ/uNP11xzl2Jf7zFRCaweqFibXwjPlbjHtz2WiYsFg4TUl sD1w== X-Forwarded-Encrypted: i=1; AJvYcCU1z4eUc0sfxCY55vyNv+8eNyDxJHEzsZeH/BeJZGoPdWUiy05MVRlFNtdxWBgg209Rj1MpIXQRJKbvBDw=@vger.kernel.org X-Gm-Message-State: AOJu0Yw3npu3uHJWe0p9PFIJDX5PKh8Q6ZWBzaYXQniETQ/y2w1ZJ2bT QdHcs34gyM2yLFi/N9EQhm9OGSoVMWarKklKWXIaRuT0YYOYPwjOizZ354QpOxF5psNSP78jcVB yBJa3SN4c+mUpc3TNb6ZDeYFU1g== X-Received: from plbmm6.prod.google.com ([2002:a17:903:a06:b0:2ae:bcf8:c324]) (user=ackerleytng job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:234e:b0:2ae:56bd:5318 with SMTP id d9443c01a7336-2aecaa40072mr17899725ad.22.1773382419519; Thu, 12 Mar 2026 23:13:39 -0700 (PDT) Date: Fri, 13 Mar 2026 06:13:10 +0000 In-Reply-To: <20260313-gmem-inplace-conversion-v3-0-5fc12a70ec89@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260313-gmem-inplace-conversion-v3-0-5fc12a70ec89@google.com> X-Developer-Key: i=ackerleytng@google.com; a=ed25519; pk=sAZDYXdm6Iz8FHitpHeFlCMXwabodTm7p8/3/8xUxuU= X-Developer-Signature: v=1; a=ed25519-sha256; t=1773382364; l=2718; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=v6F0/65iA3JRUfC1QmgBIJnF3zWWs+e6BseTT95B4p4=; b=nDXRIWwyxZomGeHvQUbNSLIecKS8Wq8s9llOyXJlEhoEZMP6VGk4bIHOCwNtANyHljL1bm+gl fTm6mXcMhorCTRUTgCnXGkDb7ONsIJel+g5ciJ2+ew9GVxZir+k0FG5 X-Mailer: b4 0.14.3 Message-ID: <20260313-gmem-inplace-conversion-v3-31-5fc12a70ec89@google.com> Subject: [PATCH RFC v3 31/43] KVM: selftests: Provide common function to set memory attributes From: Ackerley Tng To: aik@amd.com, andrew.jones@linux.dev, binbin.wu@linux.intel.com, brauner@kernel.org, chao.p.peng@linux.intel.com, david@kernel.org, ira.weiny@intel.com, jmattson@google.com, jroedel@suse.de, jthoughton@google.com, michael.roth@amd.com, oupton@kernel.org, pankaj.gupta@amd.com, qperret@google.com, rick.p.edgecombe@intel.com, rientjes@google.com, shivankg@amd.com, steven.price@arm.com, tabba@google.com, willy@infradead.org, wyihan@google.com, yan.y.zhao@intel.com, forkloop@google.com, pratyush@kernel.org, suzuki.poulose@arm.com, aneesh.kumar@kernel.org, Paolo Bonzini , Sean Christopherson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Jonathan Corbet , Shuah Khan , Shuah Khan , Vishal Annapurve , Jason Gunthorpe , Vlastimil Babka Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Ackerley Tng Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Sean Christopherson Introduce vm_mem_set_memory_attributes(), which handles setting of memory attributes for a range of guest physical addresses, regardless of whether the attributes should be set via guest_memfd or via the memory attributes at the VM level. Refactor existing vm_mem_set_{shared,private} functions to use the new function. Signed-off-by: Sean Christopherson Co-developed-by: Ackerley Tng Signed-off-by: Ackerley Tng --- tools/testing/selftests/kvm/include/kvm_util.h | 44 +++++++++++++++++++---= ---- 1 file changed, 32 insertions(+), 12 deletions(-) diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing= /selftests/kvm/include/kvm_util.h index f05f5ebf0c569..e4de0050d1ab3 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -456,18 +456,6 @@ static inline void vm_set_memory_attributes(struct kvm= _vm *vm, uint64_t gpa, vm_ioctl(vm, KVM_SET_MEMORY_ATTRIBUTES2, &attr); } =20 -static inline void vm_mem_set_private(struct kvm_vm *vm, uint64_t gpa, - uint64_t size) -{ - vm_set_memory_attributes(vm, gpa, size, KVM_MEMORY_ATTRIBUTE_PRIVATE); -} - -static inline void vm_mem_set_shared(struct kvm_vm *vm, uint64_t gpa, - uint64_t size) -{ - vm_set_memory_attributes(vm, gpa, size, 0); -} - static inline int __gmem_set_memory_attributes(int fd, loff_t offset, uint64_t size, uint64_t attributes, @@ -531,6 +519,38 @@ static inline void gmem_set_shared(int fd, loff_t offs= et, uint64_t size) gmem_set_memory_attributes(fd, offset, size, 0); } =20 +static inline void vm_mem_set_memory_attributes(struct kvm_vm *vm, uint64_= t gpa, + uint64_t size, uint64_t attrs) +{ + if (kvm_has_gmem_attributes) { + uint64_t end =3D gpa + size; + uint64_t addr, len; + off_t fd_offset; + int fd; + + for (addr =3D gpa; addr < end; addr +=3D len) { + fd =3D kvm_gpa_to_guest_memfd(vm, addr, &fd_offset, &len); + len =3D min(end - addr, len); + + gmem_set_memory_attributes(fd, fd_offset, len, attrs); + } + } else { + vm_set_memory_attributes(vm, gpa, size, attrs); + } +} + +static inline void vm_mem_set_private(struct kvm_vm *vm, uint64_t gpa, + uint64_t size) +{ + vm_mem_set_memory_attributes(vm, gpa, size, KVM_MEMORY_ATTRIBUTE_PRIVATE); +} + +static inline void vm_mem_set_shared(struct kvm_vm *vm, uint64_t gpa, + uint64_t size) +{ + vm_mem_set_memory_attributes(vm, gpa, size, 0); +} + void vm_guest_mem_fallocate(struct kvm_vm *vm, uint64_t gpa, uint64_t size, bool punch_hole); =20 --=20 2.53.0.851.ga537e3e6e9-goog