On Tue, Apr 01, 2025 at 09:01:24AM -0400, Xiaoyao Li wrote: > Date: Tue, 1 Apr 2025 09:01:24 -0400 > From: Xiaoyao Li <xiaoyao...@intel.com> > Subject: [PATCH v8 14/55] i386/tdx: Set APIC bus rate to match with what > TDX module enforces > X-Mailer: git-send-email 2.34.1 > > TDX advertises core crystal clock with cpuid[0x15] as 25MHz for TD > guests and it's unchangeable from VMM. As a result, TDX guest reads > the APIC timer as the same frequency, 25MHz. > > While KVM's default emulated frequency for APIC bus is 1GHz, set the > APIC bus rate to match with TDX explicitly to ensure KVM provide correct > emulated APIC timer for TD guest. > > Signed-off-by: Xiaoyao Li <xiaoyao...@intel.com> > --- > Changes in v6: > - new patch; > --- > target/i386/kvm/tdx.c | 13 +++++++++++++ > target/i386/kvm/tdx.h | 3 +++ > 2 files changed, 16 insertions(+)
Reviewed-by: Zhao Liu <zhao1....@intel.com>
