From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 51D9B46A600 for ; Sat, 12 Sep 2026 10:48:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789210127; cv=none; b=HUx0iG/yEwMNbDph66ct2K6pmD8cYQUBwqrq6SR5jpBIEFe//MdZYJ1MrNa9lfVxCpPNvW0Cbd1aQyBBdQDfRkUHeqIASYJZsaJGKS3Z1ZCG6MaUzMPWgFM3SWAL6YreMqXWdmJzytenEh1kHhrF4Gj5SHZm2pt3vUbuQJ1tTXc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789210127; c=relaxed/simple; bh=b74vU1nJLP467oXw+kXIksRqSlbVsPjtfhJKPOUIZJk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iJXogGlDEn3ya8PHKLUSeg/lci6mFWKQT0fMiaQcgkMFo2YPfVvKr3KdxKFkib4PCvgxEeMGQRxdFMM77uOflihaGvQf+4F0UENFLDDtRq+W8rrVaZIJamfqoQP4oPbYc64rfuXkdwLbAx4Wlg4Ys9XxrBXrBy9F+bRlDAxbi+4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B9TY/W/0; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="B9TY/W/0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F8C81F0089E; Sat, 12 Sep 2026 10:48:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789210122; bh=uPsS2T1yv9TxZ62g74tWsPG1tgtql7lQ5uggCY+tQEU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=B9TY/W/0OP8qWw2t6DM+wQ8UFUdvSqe9ASPSPQnmRKY44ylNK2HS0rkKDJSkVzIN8 Zr7PhT5iDmkyJGeIWFUy1tVAHetvMOBAqXGJahsiJASSpE5G/unf/0gIagfAoF632B 1UzyDjE/0bFgVih2M4UqC+ka3uADtwH8vTMQ4l1xnCKO3uTWbywGyuK0bStTiJ5eQu cUJSUcZYHujVmIu2Gfw+okU7pILxDEvoF/WmDnr7iaDV5plawYS5SydaFBeHOBMy6R UkCPya5xjGCqpJCIwlTENMqSVj9uId8vb6+eG/wfafSHomsUjkCMzQRP8I3bVsZCZA jKhY4dY/O7Dog== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1x5LHk-000000084hK-1hgD; Sat, 12 Sep 2026 10:48:40 +0000 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: Wei-Lin Chang , Wang Han , Shuai Xue , Steffen Eiden , Joey Gouly , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Fuad Tabba Subject: [PATCH 4/4] KVM: arm64: nv: Move TLBI VMALLS12E1* emulation over to kvm_stage2_unmap_all() Date: Sat, 12 Sep 2026 11:48:34 +0100 Message-ID: <20260912104834.3093878-5-maz@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260912104834.3093878-1-maz@kernel.org> References: <20260912104834.3093878-1-maz@kernel.org> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, weilin.chang@arm.com, wanghan@linux.alibaba.com, xueshuai@linux.alibaba.com, seiden@linux.ibm.com, joey.gouly@arm.com, suzuki.poulose@arm.com, oupton@kernel.org, yuzenghui@huawei.com, fuad.tabba@linux.dev X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Instead of emulating TLBI VMALLS12E1* with a range invalidation, use kvm_stage2_unmap_all() which is more efficient, specially in deeply nested cases. Signed-off-by: Marc Zyngier --- arch/arm64/kvm/sys_regs.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 44aae52c473d7..2c90e185c6e8e 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -4124,26 +4124,24 @@ static void s2_mmu_unmap_range(struct kvm_s2_mmu *mmu, kvm_stage2_unmap_range(mmu, info->range.start, info->range.size, true); } +static void s2_mmu_unmap_all(struct kvm_s2_mmu *mmu, + const union tlbi_info *info) +{ + kvm_stage2_unmap_all(mmu, true); +} + static bool handle_vmalls12e1is(struct kvm_vcpu *vcpu, struct sys_reg_params *p, const struct sys_reg_desc *r) { u32 sys_encoding = sys_insn(p->Op0, p->Op1, p->CRn, p->CRm, p->Op2); - u64 limit, vttbr; + u64 vttbr; if (!kvm_supported_tlbi_s12_op(vcpu, sys_encoding)) return undef_access(vcpu, p, r); vttbr = vcpu_read_sys_reg(vcpu, VTTBR_EL2); - limit = BIT_ULL(kvm_get_pa_bits(vcpu->kvm)); - kvm_s2_mmu_iterate_by_vmid(vcpu->kvm, get_vmid(vttbr), - &(union tlbi_info) { - .range = { - .start = 0, - .size = limit, - }, - }, - s2_mmu_unmap_range); + kvm_s2_mmu_iterate_by_vmid(vcpu->kvm, get_vmid(vttbr), NULL, s2_mmu_unmap_all); return true; } -- 2.47.3