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Wed, 15 May 2024 05:28:51 -0400 (EDT) (envelope-from sakib@darkstar.site) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 8d253930-129d-11ef-b4bb-af5377834399 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed; d=pobox.com; h=from:to:cc :subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; s=sasl; bh=80FdUwFU0qesWxVN03JYJt5oG HTecFn91NcTkV99tSQ=; b=Nx08oJYmkt6CIH8GtCIdMtc70SlAKVFD//4Ch9H/o bAq+qsAb4hvNWEBb5/Y6nFL8sLNzNSSOMBeUVQoLQ4BJmTDdoCOqXcUPx9ozWlRd axPyxa1btcjLWshB3DvgYRWY4UoSkZZx7J5ZT2IrJOwqaFudljszZ532Sn2+QwYT TA= From: Sergiy Kibrik To: xen-devel@lists.xenproject.org Cc: Xenia Ragiadakou , Jan Beulich , Andrew Cooper , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Stefano Stabellini , Xenia Ragiadakou , Sergiy Kibrik Subject: [XEN PATCH v2 15/15] x86/hvm: make AMD-V and Intel VT-x support configurable Date: Wed, 15 May 2024 12:28:48 +0300 Message-Id: <3ad7c0279da67e564713140fb5b247349cf4dccc.1715761386.git.Sergiy_Kibrik@epam.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 X-Pobox-Relay-ID: 8AB37632-129D-11EF-98F5-A19503B9AAD1-90055647!pb-smtp21.pobox.com Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @pobox.com) X-ZM-MESSAGEID: 1715765366437100001 Content-Type: text/plain; charset="utf-8" From: Xenia Ragiadakou Provide the user with configuration control over the cpu virtualization sup= port in Xen by making SVM and VMX options user selectable. To preserve the current default behavior, both options depend on HVM and default to value of HVM. To prevent users from unknowingly disabling virtualization support, make the controls user selectable only if EXPERT is enabled. No functional change intended. Signed-off-by: Xenia Ragiadakou Signed-off-by: Sergiy Kibrik Acked-by: Jan Beulich Reviewed-by: Stefano Stabellini --- changes in v2: - remove dependency of build options IOMMU/AMD_IOMMU on VMX/SVM options --- xen/arch/x86/Kconfig | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig index 2872b031a7..62621c7271 100644 --- a/xen/arch/x86/Kconfig +++ b/xen/arch/x86/Kconfig @@ -123,10 +123,24 @@ config HVM If unsure, say Y. =20 config SVM - def_bool HVM + bool "AMD-V" if EXPERT + depends on HVM + default HVM + help + Enables virtual machine extensions on platforms that implement the + AMD Virtualization Technology (AMD-V). + If your system includes a processor with AMD-V support, say Y. + If in doubt, say Y. =20 config VMX - def_bool HVM + bool "Intel VT-x" if EXPERT + depends on HVM + default HVM + help + Enables virtual machine extensions on platforms that implement the + Intel Virtualization Technology (Intel VT-x). + If your system includes a processor with Intel VT-x support, say Y. + If in doubt, say Y. =20 config XEN_SHSTK bool "Supervisor Shadow Stacks" --=20 2.25.1