On 10.04.25 21:31, Jason Andryuk wrote:
Hypercall detection is failing with xen_hypercall_intel() chosen even on an AMD processor. Looking at the disassembly, the call to xen_get_vendor() was removed.The check for boot_cpu_has(X86_FEATURE_CPUID) was used as a proxy for the x86_vendor having been set. When CONFIG_X86_REQUIRED_FEATURE_CPUID=y (the default value), DCE eliminates the call to xen_get_vendor(). An uninitialized value 0 means X86_VENDOR_INTEL, so the Intel function is always returned. Remove the if and always call xen_get_vendor() to avoid this issue. Fixes: 3d37d9396eb3 ("x86/cpufeatures: Add {REQUIRED,DISABLED} feature configs") Suggested-by: Juergen Gross <jgr...@suse.com> Signed-off-by: Jason Andryuk <jason.andr...@amd.com>
Reviewed-by: Juergen Gross <jgr...@suse.com> Juergen
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