From nobody Wed Apr 8 06:24:01 2026 Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) (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 B241F36C582 for ; Wed, 11 Mar 2026 00:34:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773189247; cv=none; b=Hl2pFITjODsq6Nh0QfrFhOqqO2RI//PwRAa0BMQHburWZQYJ2kuYNdQjOXJm60kcZ6kG0WWYFNvHeLCh9EM14aFITJMXrsjeR9Yie9z51QnaBtKHM1pcwjOz6U5QpI4tqNQpEqxHidZtoYccddSghzimlRDf43Rw3lEpBT8P1IU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773189247; c=relaxed/simple; bh=gUHJnfT47WA8UME9igHBxYTLndDdZjAEZkok6tr14PQ=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=RYuJtsb2X8Lshvpc/icKN3D5Cr7438ip8hjIptrgcfzQip0JJt9dAB5YRuWouTvB+HWFZLrdlxBhqp8aiNVxw4E48Oh25QGebvoc2sraDPRfCZrpsqNA2wEyzmGN/1JWxURBqRHFv3prv2Xfxobp6107vBzVhI+JlZqgnZrC7Dk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=4BfCtqsM; arc=none smtp.client-ip=209.85.216.74 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--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="4BfCtqsM" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-3568090851aso78225129a91.1 for ; Tue, 10 Mar 2026 17:34:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1773189243; x=1773794043; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=Q91qKTw/u2zRo/3uRL6c/7UREv+NiPYJeCn/l/Npduc=; b=4BfCtqsMVombrMmAGYgYubrEmDxpCfo6sscP5jD/++J7XaPVTlnh8MEu5InCr0O35c DIQDi0SDiZK8oLKUyZuErDFOowKB34TTHt1jy/2pnNvIp9cF0uDhZmTVa7AMXhey1duT k5AwKz6V8WHZX/LKty/WkskoIaloSccjb2ozezaLbqHF0o3g8cDc0bCBGcqm8ZhY1mfN Zoh0kldWJD+9gBKCOIusbbQ35EDliKrifN2MKOcn9HJLsQA1gDxvgYY4iFrQTU/bxXIN LAuu1xaUdzn5TEig98Y/X+vAmMsrNEowQEeTL7X2cWCaaj2owtSndfJyE1hnPZZiYfy2 W+TA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1773189243; x=1773794043; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Q91qKTw/u2zRo/3uRL6c/7UREv+NiPYJeCn/l/Npduc=; b=c9iZGmFCtd5sJ5wn1935U9E32p/g0L5NEkCC2SeAHGKUi8w9SQJRHNlwu4GxcGUjF7 147zI8lTqqijNJJVIvSPQDqtxhPdN+9Ns+mJ1af+6HbRFem2/3Fq30ws2InlXpN42VX2 mwF8o0aW99+2IhBlkr3KuYN+IgOox2CgLyvwsvem6eu0fqvz/kdOJNorhe1UL26y7fIi SGaGFVquDUCnHYXKwY/rPOq9CNy6YgqrJBjgZw+TLR6A5JHtm6RltwKngDQQAEvdVpig 3K3iayBg8xjw5EG+FyRplj3przPpoHWr2WBT8RyB9OkC9X3OpvZR+0t9bdP6rsLVTd0C C31g== X-Forwarded-Encrypted: i=1; AJvYcCWBOgyi/ep8g4TF21kpEOIr6oeQbZY0A4CrakF98KnOC6fdm8gR+gN3F4t8XTkfW4cc2P6VkPvi1ootHmo=@vger.kernel.org X-Gm-Message-State: AOJu0YykdhMnxP23axl7IlvQr1cHgTvjt1QIVXEkBWUpwf4lgXDTPKSp 0OLoWvyd05kuEXTQF3hL2Z4oPc/UpF+SUdu/ssMezOaDCQ2J8A7o6um4qD7T6YJxhWNy83DfF6Z CEYXcYQ== X-Received: from pjbjx10.prod.google.com ([2002:a17:90b:46ca:b0:359:8f46:13ce]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:1d09:b0:359:9158:7459 with SMTP id 98e67ed59e1d1-35a00f1bd24mr748529a91.0.1773189242920; Tue, 10 Mar 2026 17:34:02 -0700 (PDT) Reply-To: Sean Christopherson Date: Tue, 10 Mar 2026 17:33:44 -0700 In-Reply-To: <20260311003346.2626238-1-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260311003346.2626238-1-seanjc@google.com> X-Mailer: git-send-email 2.53.0.473.g4a7958ca14-goog Message-ID: <20260311003346.2626238-6-seanjc@google.com> Subject: [PATCH 5/7] KVM: x86: Track available/dirty register masks as "unsigned long" values From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini , Kiryl Shutsemau Cc: kvm@vger.kernel.org, x86@kernel.org, linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, "Chang S . Bae" Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Convert regs_{avail,dirty} and all related masks to "unsigned long" values as an intermediate step towards declaring the fields as actual bitmaps, and as a step toward support APX, which will push the total number of registers beyond 32 on 64-bit kernels. Opportunistically convert TDX's ULL bitmask to a UL to match everything else (TDX is 64-bit only, so it's a nop in the end). No functional change intended. Signed-off-by: Sean Christopherson --- arch/x86/include/asm/kvm_host.h | 4 ++-- arch/x86/kvm/kvm_cache_regs.h | 4 ++-- arch/x86/kvm/svm/svm.h | 2 +- arch/x86/kvm/vmx/tdx.c | 34 ++++++++++++++++----------------- arch/x86/kvm/vmx/vmx.h | 20 +++++++++---------- 5 files changed, 32 insertions(+), 32 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_hos= t.h index 3af5e2661ade..734c2eee58e0 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -802,8 +802,8 @@ struct kvm_vcpu_arch { */ unsigned long regs[NR_VCPU_GENERAL_PURPOSE_REGS]; unsigned long rip; - u32 regs_avail; - u32 regs_dirty; + unsigned long regs_avail; + unsigned long regs_dirty; =20 unsigned long cr0; unsigned long cr0_guest_owned_bits; diff --git a/arch/x86/kvm/kvm_cache_regs.h b/arch/x86/kvm/kvm_cache_regs.h index 94e31cf38cb8..5de6c7dfd63b 100644 --- a/arch/x86/kvm/kvm_cache_regs.h +++ b/arch/x86/kvm/kvm_cache_regs.h @@ -106,7 +106,7 @@ static __always_inline bool kvm_register_test_and_mark_= available(struct kvm_vcpu } =20 static __always_inline void kvm_reset_available_registers(struct kvm_vcpu = *vcpu, - u32 available_mask) + unsigned long available_mask) { /* * Note the bitwise-AND! In practice, a straight write would also work @@ -119,7 +119,7 @@ static __always_inline void kvm_reset_available_registe= rs(struct kvm_vcpu *vcpu, } =20 static __always_inline void kvm_reset_dirty_registers(struct kvm_vcpu *vcp= u, - u32 dirty_mask) + unsigned long dirty_mask) { vcpu->arch.regs_dirty =3D dirty_mask; } diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h index dea46130aa24..7010db21e8cc 100644 --- a/arch/x86/kvm/svm/svm.h +++ b/arch/x86/kvm/svm/svm.h @@ -460,7 +460,7 @@ static inline bool svm_is_vmrun_failure(u64 exit_code) * KVM_REQ_LOAD_MMU_PGD is always requested when the cached vcpu->arch.cr3 * is changed. svm_load_mmu_pgd() then syncs the new CR3 value into the V= MCB. */ -#define SVM_REGS_LAZY_LOAD_SET (1 << VCPU_REG_PDPTR) +#define SVM_REGS_LAZY_LOAD_SET (BIT(VCPU_REG_PDPTR)) =20 static inline void __vmcb_set_intercept(unsigned long *intercepts, u32 bit) { diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c index d4cb6dc8098f..1e4f59cfdc0a 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -1013,23 +1013,23 @@ static fastpath_t tdx_exit_handlers_fastpath(struct= kvm_vcpu *vcpu) return EXIT_FASTPATH_NONE; } =20 -#define TDX_REGS_AVAIL_SET (BIT_ULL(VCPU_REG_EXIT_INFO_1) | \ - BIT_ULL(VCPU_REG_EXIT_INFO_2) | \ - BIT_ULL(VCPU_REGS_RAX) | \ - BIT_ULL(VCPU_REGS_RBX) | \ - BIT_ULL(VCPU_REGS_RCX) | \ - BIT_ULL(VCPU_REGS_RDX) | \ - BIT_ULL(VCPU_REGS_RBP) | \ - BIT_ULL(VCPU_REGS_RSI) | \ - BIT_ULL(VCPU_REGS_RDI) | \ - BIT_ULL(VCPU_REGS_R8) | \ - BIT_ULL(VCPU_REGS_R9) | \ - BIT_ULL(VCPU_REGS_R10) | \ - BIT_ULL(VCPU_REGS_R11) | \ - BIT_ULL(VCPU_REGS_R12) | \ - BIT_ULL(VCPU_REGS_R13) | \ - BIT_ULL(VCPU_REGS_R14) | \ - BIT_ULL(VCPU_REGS_R15)) +#define TDX_REGS_AVAIL_SET (BIT(VCPU_REG_EXIT_INFO_1) | \ + BIT(VCPU_REG_EXIT_INFO_2) | \ + BIT(VCPU_REGS_RAX) | \ + BIT(VCPU_REGS_RBX) | \ + BIT(VCPU_REGS_RCX) | \ + BIT(VCPU_REGS_RDX) | \ + BIT(VCPU_REGS_RBP) | \ + BIT(VCPU_REGS_RSI) | \ + BIT(VCPU_REGS_RDI) | \ + BIT(VCPU_REGS_R8) | \ + BIT(VCPU_REGS_R9) | \ + BIT(VCPU_REGS_R10) | \ + BIT(VCPU_REGS_R11) | \ + BIT(VCPU_REGS_R12) | \ + BIT(VCPU_REGS_R13) | \ + BIT(VCPU_REGS_R14) | \ + BIT(VCPU_REGS_R15)) =20 static void tdx_load_host_xsave_state(struct kvm_vcpu *vcpu) { diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index d3255a054185..0962374c4cd3 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -623,16 +623,16 @@ BUILD_CONTROLS_SHADOW(tertiary_exec, TERTIARY_VM_EXEC= _CONTROL, 64) * cache on demand. Other registers not listed here are synced to * the cache immediately after VM-Exit. */ -#define VMX_REGS_LAZY_LOAD_SET ((1 << VCPU_REG_RIP) | \ - (1 << VCPU_REGS_RSP) | \ - (1 << VCPU_REG_RFLAGS) | \ - (1 << VCPU_REG_PDPTR) | \ - (1 << VCPU_REG_SEGMENTS) | \ - (1 << VCPU_REG_CR0) | \ - (1 << VCPU_REG_CR3) | \ - (1 << VCPU_REG_CR4) | \ - (1 << VCPU_REG_EXIT_INFO_1) | \ - (1 << VCPU_REG_EXIT_INFO_2)) +#define VMX_REGS_LAZY_LOAD_SET (BIT(VCPU_REGS_RSP) | \ + BIT(VCPU_REG_RIP) | \ + BIT(VCPU_REG_RFLAGS) | \ + BIT(VCPU_REG_PDPTR) | \ + BIT(VCPU_REG_SEGMENTS) | \ + BIT(VCPU_REG_CR0) | \ + BIT(VCPU_REG_CR3) | \ + BIT(VCPU_REG_CR4) | \ + BIT(VCPU_REG_EXIT_INFO_1) | \ + BIT(VCPU_REG_EXIT_INFO_2)) =20 static inline unsigned long vmx_l1_guest_owned_cr0_bits(void) { --=20 2.53.0.473.g4a7958ca14-goog