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Tsirkin" To: qemu-devel@nongnu.org Subject: [PULL v3 04/18] acpi: cpuhp: spec: fix 'Command data' description Message-ID: <20200123070913.626488-5-mst@redhat.com> References: <20200123070913.626488-1-mst@redhat.com> MIME-Version: 1.0 In-Reply-To: <20200123070913.626488-1-mst@redhat.com> X-Mailer: git-send-email 2.24.1.751.gd10ce2899c X-Mutt-Fcc: =sent X-MC-Unique: Xggtf5yFMteKKsi3uRM-JQ-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Laszlo Ersek , Igor Mammedov Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Igor Mammedov Correct returned value description in case 'Command field' =3D=3D 0x0, it's not PXM but CPU selector value with pending event In addition describe 0 blanket value in case of not supported 'Command field' value. Signed-off-by: Igor Mammedov Reviewed-by: Laszlo Ersek Message-Id: <1575896942-331151-6-git-send-email-imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- docs/specs/acpi_cpu_hotplug.txt | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/docs/specs/acpi_cpu_hotplug.txt b/docs/specs/acpi_cpu_hotplug.= txt index 4e65286ff5..d5108720bf 100644 --- a/docs/specs/acpi_cpu_hotplug.txt +++ b/docs/specs/acpi_cpu_hotplug.txt @@ -56,9 +56,8 @@ read access: 3-7: reserved and should be ignored by OSPM [0x5-0x7] reserved [0x8] Command data: (DWORD access) - in case of error or unsupported command reads is 0xFFFFFFFF - current 'Command field' value: - 0: returns PXM value corresponding to device + contains 0 unless value last stored in 'Command field' is one of: + 0: contains 'CPU selector' value of a CPU with pending event= [s] =20 write access: offset: @@ -81,9 +80,9 @@ write access: value: 0: selects a CPU device with inserting/removing events and following reads from 'Command data' register return - selected CPU (CPU selector value). If no CPU with events - found, the current CPU selector doesn't change and - corresponding insert/remove event flags are not set. + selected CPU ('CPU selector' value). + If no CPU with events found, the current 'CPU selector' doe= sn't + change and corresponding insert/remove event flags are not = modified. 1: following writes to 'Command data' register set OST event register in QEMU 2: following writes to 'Command data' register set OST status --=20 MST