git: 39975c7778fd - main - hwpstate_intel(4): sysctl_epp_select(): Cache again new EPP value

The branch main has been updated by olce:

URL: https://cgit.FreeBSD.org/src/commit/?id=39975c7778fd6ac56571ec64a2003b06a1ca8a52

commit 39975c7778fd6ac56571ec64a2003b06a1ca8a52
Author:     Olivier Certner <olce@FreeBSD.org>
AuthorDate: 2026-06-25 00:17:58 +0000
Commit:     Olivier Certner <olce@FreeBSD.org>
CommitDate: 2026-06-25 00:27:30 +0000

    hwpstate_intel(4): sysctl_epp_select(): Cache again new EPP value
    
    This caching was removed inadvertently in the commit mentioned below.
    
    Fixes:          8452afeb5682 ("hwpstate_intel: Use 8bit scale instead of percentage scale")
    Event:          Halifax Hackathon 202606
    Location:       jrm@'s living room
    Sponsored by:   The FreeBSD Foundation
---
 sys/x86/cpufreq/hwpstate_intel.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/sys/x86/cpufreq/hwpstate_intel.c b/sys/x86/cpufreq/hwpstate_intel.c
index 81edff278de8..352e44f84c4e 100644
--- a/sys/x86/cpufreq/hwpstate_intel.c
+++ b/sys/x86/cpufreq/hwpstate_intel.c
@@ -314,16 +314,16 @@ sysctl_epp_select(SYSCTL_HANDLER_ARGS)
 	}
 
 	if (sc->hwp_pref_ctrl) {
-		sc->req =
-		    ((sc->req & ~IA32_HWP_REQUEST_ENERGY_PERFORMANCE_PREFERENCE)
-		    | (val << 24u));
+		const uint64_t req_cached = sc->req = (sc->req &
+		    ~IA32_HWP_REQUEST_ENERGY_PERFORMANCE_PREFERENCE) |
+		    (val << 24u);
 
 		if (sc->hwp_pkg_ctrl_en)
 			ret = WRMSR_ON_CPU(dev, MSR_IA32_HWP_REQUEST_PKG,
-			    sc->req);
+			    req_cached);
 		else
 			ret = WRMSR_ON_CPU(dev, MSR_IA32_HWP_REQUEST,
-			    sc->req);
+			    req_cached);
 	} else {
 		val = EPP_TO_EPB(val);
 		MPASS((val & ~IA32_ENERGY_PERF_BIAS_POLICY_HINT_MASK) == 0);