[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH v3 0/4] x86/spec-ctrl: IPBP improvements
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 25 Jan 2023 16:24:19 +0100
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=suse.com; dmarc=pass action=none header.from=suse.com; dkim=pass header.d=suse.com; arc=none
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=6LGB6M/zSypAQqdu7F039ipa7i1HTcq09wHgGgOd0tE=; b=lkeIpm38aXAkp718tIVyAZcwOJlpoHDGGwg+ny/XNVWB6seMPbGhhi8TniM8IE/XaNVmnzhu65krF3i6Q6yPomSSegT0zGVoCMgWSHYegePJ16Af2kQIJfWwnkxqv07L1GIGOgOR6bJeset/r2zW3OWbF8ENOb+uBNi1op4JKW9cZTu8MS6q+eHE8BtTzjw/ranWQ0Uq5oFpgF1LdxWYyCW76Sx0PXoAldqrGyILkyqpYyxjBOwbSCQzsj3SRpC51wKGH7gIR7lsW+VfvHOvwid+VwuqWbg+/AzGZRavhF5ymzk8ABt179DFB8+H2+o1OHpxs/NklaEDJB1ZhwQ56g==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=JoryF+zXzbdVZnKxwKq1JxwkHvDcdlHX1piCQfei9pV0pv/AuGdY96256hF88egQzQrP7YtKTs5EHnKiELTfsuSs7LDDO+RWXEB4VzHKtT4XNHvIST4fsd8QN/FUVfGVu7aha40lmBDAp8nqv0dQ2MQvCREMrtqs2uddfFrK+tVqrcFv/UjfpnBEQa9Fvj+FqjxNU6khAcgTN8uL1L3vfK4pYU7gXGgFVBoJ6ckFmpg2A96EuktuOIVC/R2hAjdWpE1xGMJwV781Cwqa487Y3RCXznrgo2G2GaKiT4BT/R7p7FkOo7/qKNxSbVaGzUOqYVdGshMEPnEJzBnz/Y+1tg==
- Authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=suse.com;
- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Wed, 25 Jan 2023 15:24:34 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Versions of the two final patches were submitted standalone earlier
on. The series here tries to carry out a suggestion from Andrew,
which the two of us have been discussing. Then said previously posted
patches are re-based on top, utilizing the new functionality.
1: spec-ctrl: add logic to issue IBPB on exit to guest
2: spec-ctrl: defer context-switch IBPB until guest entry
3: limit issuing of IBPB during context switch
4: PV: issue branch prediction barrier when switching 64-bit guest to kernel
mode
Jan
|
