On Mon, Jul 23, 2018 at 02:48:02PM +0100, Andrew Cooper wrote: > The calls to xpti_init_default() in parse_xpti() are buggy. The CPUID data > hasn't been fetched that early, and boot_cpu_has(X86_FEATURE_ARCH_CAPS) will > always evaluate false. > > As a result, the default case won't disable XPTI on Intel hardware which > advertises ARCH_CAPABILITIES_RDCL_NO. > > Simplify parse_xpti() to solely the setting of opt_xpti according to the > passed string, and have init_speculation_mitigations() call > xpti_init_default() if appropiate. Drop the force parameter, and pass caps > instead, to avoid redundant re-reading of MSR_ARCH_CAPS. > > Signed-off-by: Andrew Cooper <[email protected]>
Reviewed-by: Wei Liu <[email protected]> _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
