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Add TSC warp detection and tsc=directsync fix/undo - #294
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magnumsolo wants to merge 1 commit into
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magnumsolo wants to merge 1 commit into
magnumsolo wants to merge 1 commit into
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Some AMD Zen laptops (several Lenovo Legion/IdeaPad models so far) boot with the cores' TSCs out of sync. The kernel can't correct this on CPUs without
tsc_adjust, so it marks the TSC unstable and falls back to the much slower HPET clocksource.linux-cachyosalready ships thetsc=directsyncworkaround (CachyOS/linux-cachyos#925), but it is off by default. This PR adds a button under Fixes that turns it on, and another that turns it off again.