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thermal: intel: Don't set HFI status bit to 1

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When CPU doesn't support HFI (Hardware Feedback Interface), don't include
BIT 26 in the mask to prevent clearing. otherwise this results in:
    unchecked MSR access error: WRMSR to 0x1b1
      (tried to write 0x0000000004000aa8)
      at rIP: 0xffffffff8b8559fe (throttle_active_work+0xbe/0x1b0)

Fixes: 6fe1e64b60 ("thermal: intel: Prevent accidental clearing of HFI status")
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Srinivas Pandruvada 2022-12-13 18:06:51 -08:00 committed by Rafael J. Wysocki
parent 75b15aa0d8
commit 904f309ae7
1 changed files with 4 additions and 1 deletions
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5
drivers/thermal/intel/therm_throt.c
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@ -194,7 +194,7 @@ static const struct attribute_group thermal_attr_group = {
#define THERM_STATUS_PROCHOT_LOG BIT(1)
#define THERM_STATUS_CLEAR_CORE_MASK (BIT(1) | BIT(3) | BIT(5) | BIT(7) | BIT(9) | BIT(11) | BIT(13) | BIT(15))
#define THERM_STATUS_CLEAR_PKG_MASK (BIT(1) | BIT(3) | BIT(5) | BIT(7) | BIT(9) | BIT(11) | BIT(26))
#define THERM_STATUS_CLEAR_PKG_MASK (BIT(1) | BIT(3) | BIT(5) | BIT(7) | BIT(9) | BIT(11))
/*
* Clear the bits in package thermal status register for bit = 1
@ -211,6 +211,9 @@ void thermal_clear_package_intr_status(int level, u64 bit_mask)
} else {
msr = MSR_IA32_PACKAGE_THERM_STATUS;
msr_val = THERM_STATUS_CLEAR_PKG_MASK;
if (boot_cpu_has(X86_FEATURE_HFI))
msr_val |= BIT(26);
}
msr_val &= ~bit_mask;