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([95.67.15.120]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-553677389d5sm143592e87.259.2025.06.06.03.11.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Jun 2025 03:11:46 -0700 (PDT) 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: a7f2526a-42be-11f0-b894-0df219b8e170 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1749204707; x=1749809507; darn=lists.xenproject.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=7hPQ4VxBdVLnFqUBMXQnHxRKZBnEmnRXk//zaua6W64=; b=G2rmIWx4KAYDgvDdM626qRTYuIsOZJIiY9y6odYDCBRI1emvvtPv49LxKuanablqjk wYjbIAvigMtjNheuq2KMbhFfiDWfsR49Z4HB+i2LzBCtIC4pW5dog+mu08gKax8zsEoX ReYz1PwqZ2sW3Y3XGokyjMCAOFV6iqPmee5ZINIGgIf0mE2/uIz4081aaLjiJ/3lcpw0 xr94sbtGUKyQbf6OYZhRulBOQ9Y606W6u8VR392ZMxFEGednYSUzJVtwI0W8TAbYMkNX lWl4nmMcENvUu1n4Yf9ssbKV7Tt7moFYigFEWvVpgsLInw1Ivst1RrMUPSNUXD9I3Oq+ CHWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749204707; x=1749809507; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=7hPQ4VxBdVLnFqUBMXQnHxRKZBnEmnRXk//zaua6W64=; b=JvXBGoCtamkGRMmiCAVE3TSFOAZd3i+PQLkf7NBBAG8imFgl4GdYIgZg9u8aVmRmy6 woTjsqIRv4MWLmJ//3GpFQsp3J1sVDzAYc1nWC2VSO/WTjS+m+m4TGRPhx/gS264aHOy hclN/HDO8awPTs8cGlqvoiybc+bH9BGa/S9xAo8rkdfA8LANY5TCa2L0rUNaXNi723Zx T6HtbiUz0vhPDTNl1bPlVe9EaWBS0d8LJAWdZKTxZDodiX8QSSs3wiZjJMDdAWWUAio0 hSxpFKdgBVbJSGzfzbbXgHfu3x5+LAC5OXgF4YCe7nlHAVUk+9wZs5q0f5NipxeeVt95 JjIA== X-Gm-Message-State: AOJu0YxtIzpxspIT4cPdROwMd7K8g0MtUjSj1hNa5D6NAZFfCPJw6jMp dEstY2xhGeBTkHxE6YF3LX3zeKChK76PpDz6QgkblWTopvVbGQ8lp6qy33bndNMF X-Gm-Gg: ASbGnctR/7dIh3dQRnjUvlpXjMa7KbCBp1GAxdn3nc3GVQVN5cvt3odw7g1yCYD39r1 ZYiB4DccrLy8uLlSWdyRBrmAVucqGHgBqad2NihducWgUiJrtYHs0FrOLQIwqf1eh3RMyNPDi1G iBPcOLduQihqyQpHPA1meX/djqcYJtVk6aqZWXF0y6T4a5MXJz9J0wOuZ2LGZoGxwxuhsafcNbj Wm2fIMgExwPQJI468eI9JkIzzG33qkKYRjYB+3tawoY/pOZkHNzONa6f7G3HrfwuiWw3ZjnAsQ5 Olm77dw5y8O+7npg0Xzc4xZ1UrHLV1gfcQ/sxyjH2b8fVXLKQk4kQXFJWkYwq+WNvIMs+rryL0g /yiZJmlViA0Saund+UNvPrW/ENg== X-Google-Smtp-Source: AGHT+IHcPVMXpXDFxKZ1ggDEsOO/oqjCw4oEwbGk6ItH8L5RwFF1woqnv9iCGDdBGtqaQdLse2gqFg== X-Received: by 2002:a05:6512:ba7:b0:553:27cb:b84e with SMTP id 2adb3069b0e04-55366c2ff7amr779327e87.41.1749204706738; Fri, 06 Jun 2025 03:11:46 -0700 (PDT) From: Mykola Kvach To: xen-devel@lists.xenproject.org Cc: Mykyta Poturai , Jan Beulich , Andrew Cooper , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Anthony PERARD , Michal Orzel , Julien Grall , Stefano Stabellini , Mykola Kvach Subject: [PATCH v3 1/2] xen: Introduce system suspend config option Date: Fri, 6 Jun 2025 13:11:41 +0300 Message-ID: <412d2b68741182fe0528cb85c0af2a29a2ebec3a.1749204282.git.mykola_kvach@epam.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1749204739159116600 Content-Type: text/plain; charset="utf-8" From: Mykyta Poturai This option enables the system suspend support. This is the mechanism that allows the system to be suspended to RAM and later resumed. The patch introduces three options: - HAS_SYSTEM_SUSPEND: indicates suspend support is available on the platfor= m. - SYSTEM_SUSPEND_ALWAYS_ON: used for architectures where suspend must always be enabled. - SYSTEM_SUSPEND: user-facing option to enable/disable suspend if supported. Defaults to enabled if SYSTEM_SUSPEND_ALWAYS_ON is set and depends on HAS_SYSTEM_SUSPEND. On x86, both HAS_SYSTEM_SUSPEND and SYSTEM_SUSPEND_ALWAYS_ON are selected by default, making suspend support always enabled. The options are designed to be easily extensible to other architectures (e.g., PPC, RISC-V) as future support is added. Signed-off-by: Mykyta Poturai Signed-off-by: Mykola Kvach Acked-by: Jan Beulich --- Changes introduced in v3: - select HAS_SYSTEM_SUSPEND from SYSTEM_SUSPEND_ALWAYS_ON - drop selecting HAS_SYSTEM_SUSPEND from X86 - simplify default setting in SYSTEM_SUSPEND - hide prompt of SYSTEM_SUSPEND when SYSTEM_SUSPEND_ALWAYS_ON is enabled - move HAS_SYSTEM_SUSPEND alongside other HAS_* configs Discussion on adding the SYSTEM_SUSPEND config can be found here: https://lists.xenproject.org/archives/html/xen-devel/2025-03/msg00169.html --- xen/arch/x86/Kconfig | 1 + xen/common/Kconfig | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig index 7afe879710..752d5141bb 100644 --- a/xen/arch/x86/Kconfig +++ b/xen/arch/x86/Kconfig @@ -33,6 +33,7 @@ config X86 select HAS_VMAP select HAS_VPCI if HVM select NEEDS_LIBELF + select SYSTEM_SUSPEND_ALWAYS_ON =20 config ARCH_DEFCONFIG string diff --git a/xen/common/Kconfig b/xen/common/Kconfig index eece1370a3..867710134a 100644 --- a/xen/common/Kconfig +++ b/xen/common/Kconfig @@ -122,6 +122,9 @@ config HAS_SCHED_GRANULARITY config HAS_STACK_PROTECTOR bool =20 +config HAS_SYSTEM_SUSPEND + bool + config HAS_UBSAN bool =20 @@ -593,4 +596,19 @@ config BUDDY_ALLOCATOR_SIZE Amount of memory reserved for the buddy allocator to serve Xen heap, working alongside the colored one. =20 +config SYSTEM_SUSPEND_ALWAYS_ON + bool + select HAS_SYSTEM_SUSPEND + +config SYSTEM_SUSPEND + bool "System suspend support" if !SYSTEM_SUSPEND_ALWAYS_ON + depends on HAS_SYSTEM_SUSPEND + default SYSTEM_SUSPEND_ALWAYS_ON + help + This option enables the system suspend support. This is the + mechanism that allows the system to be suspended to RAM and + later resumed. + + If unsure, say N. + endmenu --=20 2.48.1