Sync/lass 20260916 - #604
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Determine LASS enablement from the kernel-exposed lass flag in /proc/cpuinfo instead of parsing /proc/cmdline, since there is no lass kernel command line parameter and LASS is enabled from CPUID. Also fix lass_enable being unconditionally set to true so the detection result is honored. [Test Components] lass [Test Types] func Co-developed-by: Copilot <copilot@github.com> Signed-off-by: Farrah Chen <farrah.chen@intel.com> (cherry picked from commit 6ab86a2834e016c0df319b4ce79ed8715694f59d)
check_vsyscall_status() read /proc/cmdline into a 256-byte buffer, but a real distro kernel command line often exceeds that. The fgets() loop then keeps only the last chunk, so an early vsyscall= token (e.g. vsyscall=none) was dropped and the mode was misdetected, causing the 'm' case to fail unexpectedly. Enlarge the buffer to hold the whole command line (x86 COMMAND_LINE_SIZE is 2048). [Test Components] lass [Test Types] func Co-developed-by: Copilot <copilot@github.com> Signed-off-by: Farrah Chen <farrah.chen@intel.com> (cherry picked from commit 1fd00ef702cb0dfc8e2c1105126248274a19fff5)
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