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[PATCH 9/9] x86/mwait-idle: add Clearwater Forest SoC support
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 8 Jul 2025 15:01:16 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Tue, 08 Jul 2025 13:01:30 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Clearwater Forest (CWF) SoC has the same C-states as Sierra Forest (SRF)
SoC. Add CWF support by re-using the SRF C-states table.
Note: it is expected that CWF C-states will have same or very similar
characteristics as SRF C-states (latency and target residency).
However, there is a possibility that the characteristics will end up
being different enough when the CWF platform development is finished.
In that case, a separate CWF C-states table will be created and populated
with the CWF-specific characteristics (latency and target residency).
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@xxxxxxxxxxxxxxx>
Link:
https://patch.msgid.link/20241203130306.1559024-1-artem.bityutskiy@xxxxxxxxxxxxxxx
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Origin: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
eeed4bfbe9b9
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/xen/arch/x86/cpu/mwait-idle.c
+++ b/xen/arch/x86/cpu/mwait-idle.c
@@ -1350,6 +1350,7 @@ static const struct x86_cpu_id intel_idl
ICPU(ATOM_TREMONT_D, snr),
ICPU(ATOM_CRESTMONT, grr),
ICPU(ATOM_CRESTMONT_X, srf),
+ ICPU(ATOM_DARKMONT_X, srf),
{}
};
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