On 3/9/2024 9:27 AM, Sean Christopherson wrote:
Track the "basic" capabilities VMX MSR as a single u64 in vmcs_config
instead of splitting it across three fields, that obviously don't combine
into a single 64-bit value, so that KVM can use the macros that define MSR
bits using their absolute position. Replace all open coded shifts and
masks, many of which are relative to the "high" half, with the appropriate
macro.
Opportunistically use VMX_BASIC_32BIT_PHYS_ADDR_ONLY instead of an open
coded equivalent, and clean up the related comment to not reference a
specific SDM section (to the surprise of no one, the comment is stale).
No functional change intended (though obviously the code generation will
be quite different).
Cc: Shan Kang <shan.kang@xxxxxxxxx>
Cc: Kai Huang <kai.huang@xxxxxxxxx>
Signed-off-by: Xin Li <xin3.li@xxxxxxxxx>
[sean: split to separate patch, write changelog]
The patch author doesn't match with the signed-off
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
arch/x86/include/asm/vmx.h | 5 +++++
arch/x86/kvm/vmx/capabilities.h | 6 ++----
arch/x86/kvm/vmx/vmx.c | 28 ++++++++++++++--------------
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index c3a97dca4a33..ce6d166fc3c5 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -150,6 +150,11 @@ static inline u32 vmx_basic_vmcs_size(u64 vmx_basic)
return (vmx_basic & GENMASK_ULL(44, 32)) >> 32;
}
+static inline u32 vmx_basic_vmcs_mem_type(u64 vmx_basic)
+{
+ return (vmx_basic & GENMASK_ULL(53, 50)) >> 50;
#define VMX_BASIC_MEM_TYPE_SHIFT 50
We have the shift defined in previous patch, we need to use it I think,
Any maybe, we can define the MASK as well.
Otherwise, this cleanup is good.
Reviewed-by: Xiaoyao Li <xiaoyao.li@xxxxxxxxx>
