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Cache QoS: fix for seting MSR
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c83429c55c
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2 changed files with 10 additions and 2 deletions
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@ -221,7 +221,10 @@ static bool wrmsr(const MsrItems& preset, const std::vector<CpuThread>& threads,
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else {
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else {
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// Disable L3 cache for Class Of Service 1
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// Disable L3 cache for Class Of Service 1
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if (!wrmsr_on_cpu(0xC91, cpu, 0, MsrItem::kNoMask)) {
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if (!wrmsr_on_cpu(0xC91, cpu, 0, MsrItem::kNoMask)) {
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return false;
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// Some CPUs don't let set it to all zeros
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if (!wrmsr_on_cpu(0xC91, cpu, 1, MsrItem::kNoMask)) {
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return false;
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}
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}
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}
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// Assign Class Of Service 1 to current CPU core
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// Assign Class Of Service 1 to current CPU core
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@ -324,7 +324,12 @@ static bool wrmsr(const MsrItems &preset, const std::vector<CpuThread>& threads,
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}
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}
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else {
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else {
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// Disable L3 cache for Class Of Service 1
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// Disable L3 cache for Class Of Service 1
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success &= wrmsr(driver, 0xC91, 0, MsrItem::kNoMask);
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if (!wrmsr(driver, 0xC91, 0, MsrItem::kNoMask)) {
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// Some CPUs don't let set it to all zeros
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if (!wrmsr(driver, 0xC91, 1, MsrItem::kNoMask)) {
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success = false;
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}
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}
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// Assign Class Of Service 1 to current CPU core
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// Assign Class Of Service 1 to current CPU core
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success &= wrmsr(driver, 0xC8F, 1ULL << 32, MsrItem::kNoMask);
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success &= wrmsr(driver, 0xC8F, 1ULL << 32, MsrItem::kNoMask);
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