On 06.01.2025 15:19, Andrew Cooper wrote: > Fam1Ah is similar to Fam19h in these regards. > > Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com> > --- > CC: Jan Beulich <jbeul...@suse.com> > CC: Roger Pau Monné <roger....@citrix.com> > > With this patch, I think we're in an ok position to declare support on Zen5 > CPUs.
What about amd_log_freq(), where the 0x19 upper bound may need bumping? > --- a/xen/arch/x86/cpu/microcode/amd.c > +++ b/xen/arch/x86/cpu/microcode/amd.c > @@ -114,6 +114,7 @@ static bool verify_patch_size(uint32_t patch_size) > #define F16H_MPB_MAX_SIZE 3458 > #define F17H_MPB_MAX_SIZE 3200 > #define F19H_MPB_MAX_SIZE 5568 > +#define F1AH_MPB_MAX_SIZE 14368 Yet another pretty odd number. Are these actually documented anywhere? And what has come of their plan to make ucode size available via CPUID (for which I even sent a patch quite a long while ago)? Jan
