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Tue, 08 Jul 2025 06:00:35 -0700 (PDT) Message-ID: <359d8ac6-5f54-408d-9f4f-81ff425b7da3@suse.com> Date: Tue, 8 Jul 2025 15:00:29 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH 7/9] x86/mwait-idle: add Granite Rapids Xeon support From: Jan Beulich To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= References: <1df49875-99b8-4302-aed7-5a75dbdd85ca@suse.com> Content-Language: en-US Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL In-Reply-To: <1df49875-99b8-4302-aed7-5a75dbdd85ca@suse.com> Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1751979656963116600 Content-Type: text/plain; charset="utf-8" Add Granite Rapids Xeon C-states, which are C1, C1E, C6, and C6P. Comparing to previous Xeon Generations (e.g., Emerald Rapids), C6 requests end up only in core C6 state, and no package C-state promotion takes place even if all cores in the package are in core C6. C6P requests also end up in core C6, but if all cores have requested C6P, the SoC will enter the package C6 state. Signed-off-by: Artem Bityutskiy Link: https://patch.msgid.link/20240806160310.3719205-1-artem.bityutskiy@li= nux.intel.com [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki Origin: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 37= 0406bf5738 Signed-off-by: Jan Beulich --- a/xen/arch/x86/cpu/mwait-idle.c +++ b/xen/arch/x86/cpu/mwait-idle.c @@ -756,6 +756,34 @@ static struct cpuidle_state __ro_after_i {} }; =20 +static const struct cpuidle_state gnr_cstates[] =3D { + { + .name =3D "C1", + .flags =3D MWAIT2flg(0x00), + .exit_latency =3D 1, + .target_residency =3D 1, + }, + { + .name =3D "C1E", + .flags =3D MWAIT2flg(0x01), + .exit_latency =3D 4, + .target_residency =3D 4, + }, + { + .name =3D "C6", + .flags =3D MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency =3D 170, + .target_residency =3D 650, + }, + { + .name =3D "C6P", + .flags =3D MWAIT2flg(0x21) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency =3D 210, + .target_residency =3D 1000, + }, + {} +}; + static const struct cpuidle_state atom_cstates[] =3D { { .name =3D "C1E", @@ -1202,6 +1230,11 @@ static const struct idle_cpu idle_cpu_sp .c1e_promotion =3D C1E_PROMOTION_DISABLE, }; =20 +static const struct idle_cpu idle_cpu_gnr =3D { + .state_table =3D gnr_cstates, + .c1e_promotion =3D C1E_PROMOTION_DISABLE, +}; + static const struct idle_cpu idle_cpu_avn =3D { .state_table =3D avn_cstates, .c1e_promotion =3D C1E_PROMOTION_DISABLE, @@ -1276,6 +1309,7 @@ static const struct x86_cpu_id intel_idl ICPU(ATOM_GRACEMONT, gmt), ICPU(SAPPHIRERAPIDS_X, spr), ICPU(EMERALDRAPIDS_X, spr), + ICPU(GRANITERAPIDS_X, gnr), ICPU(ATOM_GOLDMONT, bxt), ICPU(ATOM_GOLDMONT_PLUS, bxt), ICPU(ATOM_GOLDMONT_D, dnv),