diff mbox series

[v7,04/10] KVM: VMX: Move MSR_IA32_VMX_BASIC bit defines to asm/vmx.h

Message ID 20240520175925.1217334-5-seanjc@google.com (mailing list archive)
State New
Headers show
Series x86/cpu: KVM: Clean up PAT and VMX macros | expand

Commit Message

Sean Christopherson May 20, 2024, 5:59 p.m. UTC
From: Xin Li <xin3.li@intel.com>

Move the bit defines for MSR_IA32_VMX_BASIC from msr-index.h to vmx.h so
that they are colocated with other VMX MSR bit defines, and with the
helpers that extract specific information from an MSR_IA32_VMX_BASIC value.

Opportunistically use BIT_ULL() instead of open coding hex values.

Opportunistically rename VMX_BASIC_64 to VMX_BASIC_32BIT_PHYS_ADDR_ONLY,
as "VMX_BASIC_64" is widly misleading.  The flag enumerates that addresses
are limited to 32 bits, not that 64-bit addresses are allowed.

Cc: Shan Kang <shan.kang@intel.com>
Cc: Kai Huang <kai.huang@intel.com>
Signed-off-by: Xin Li <xin3.li@intel.com>
[sean: split to separate patch, write changelog]
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/include/asm/msr-index.h | 8 --------
 arch/x86/include/asm/vmx.h       | 7 +++++++
 2 files changed, 7 insertions(+), 8 deletions(-)

Comments

Xiaoyao Li May 22, 2024, 6:48 a.m. UTC | #1
On 5/21/2024 1:59 AM, Sean Christopherson wrote:
> From: Xin Li <xin3.li@intel.com>
> 
> Move the bit defines for MSR_IA32_VMX_BASIC from msr-index.h to vmx.h so
> that they are colocated with other VMX MSR bit defines, and with the
> helpers that extract specific information from an MSR_IA32_VMX_BASIC value.
> 
> Opportunistically use BIT_ULL() instead of open coding hex values.
> 
> Opportunistically rename VMX_BASIC_64 to VMX_BASIC_32BIT_PHYS_ADDR_ONLY,
> as "VMX_BASIC_64" is widly misleading.  The flag enumerates that addresses
> are limited to 32 bits, not that 64-bit addresses are allowed.
> 
> Cc: Shan Kang <shan.kang@intel.com>
> Cc: Kai Huang <kai.huang@intel.com>
> Signed-off-by: Xin Li <xin3.li@intel.com>
> [sean: split to separate patch, write changelog]
> Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
> Reviewed-by: Kai Huang <kai.huang@intel.com>
> Signed-off-by: Sean Christopherson <seanjc@google.com>
> ---
>   arch/x86/include/asm/msr-index.h | 8 --------
>   arch/x86/include/asm/vmx.h       | 7 +++++++
>   2 files changed, 7 insertions(+), 8 deletions(-)
> 
> diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
> index b14434af00df..7e7cad59e552 100644
> --- a/arch/x86/include/asm/msr-index.h
> +++ b/arch/x86/include/asm/msr-index.h
> @@ -1168,14 +1168,6 @@
>   #define MSR_IA32_VMX_VMFUNC             0x00000491
>   #define MSR_IA32_VMX_PROCBASED_CTLS3	0x00000492
>   
> -/* VMX_BASIC bits and bitmasks */
> -#define VMX_BASIC_VMCS_SIZE_SHIFT	32
> -#define VMX_BASIC_TRUE_CTLS		(1ULL << 55)
> -#define VMX_BASIC_64		0x0001000000000000LLU
> -#define VMX_BASIC_MEM_TYPE_SHIFT	50

> -#define VMX_BASIC_MEM_TYPE_MASK	0x003c000000000000LLU

VMX_BASIC_MEM_TYPE_MASK	gets deleted. It deserves to be mentioned?

> -#define VMX_BASIC_INOUT		0x0040000000000000LLU
> -
>   /* Resctrl MSRs: */
>   /* - Intel: */
>   #define MSR_IA32_L3_QOS_CFG		0xc81
> diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
> index e531d8d80a11..81b986e501a9 100644
> --- a/arch/x86/include/asm/vmx.h
> +++ b/arch/x86/include/asm/vmx.h
> @@ -135,6 +135,13 @@
>   #define VMX_VMFUNC_EPTP_SWITCHING               VMFUNC_CONTROL_BIT(EPTP_SWITCHING)
>   #define VMFUNC_EPTP_ENTRIES  512
>   
> +#define VMX_BASIC_VMCS_SIZE_SHIFT		32
> +#define VMX_BASIC_32BIT_PHYS_ADDR_ONLY		BIT_ULL(48)
> +#define VMX_BASIC_DUAL_MONITOR_TREATMENT	BIT_ULL(49)

why add it?

> +#define VMX_BASIC_MEM_TYPE_SHIFT		50
> +#define VMX_BASIC_INOUT				BIT_ULL(54)
> +#define VMX_BASIC_TRUE_CTLS			BIT_ULL(55)
> +
>   static inline u32 vmx_basic_vmcs_revision_id(u64 vmx_basic)
>   {
>   	return vmx_basic & GENMASK_ULL(30, 0);
Xiaoyao Li May 22, 2024, 7:07 a.m. UTC | #2
On 5/22/2024 2:48 PM, Xiaoyao Li wrote:
>> +#define VMX_BASIC_DUAL_MONITOR_TREATMENT    BIT_ULL(49)
> 
> why add it?

It gets used in Patch 6.

So either mention it in change log, or move it to patch 6.
diff mbox series

Patch

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index b14434af00df..7e7cad59e552 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -1168,14 +1168,6 @@ 
 #define MSR_IA32_VMX_VMFUNC             0x00000491
 #define MSR_IA32_VMX_PROCBASED_CTLS3	0x00000492
 
-/* VMX_BASIC bits and bitmasks */
-#define VMX_BASIC_VMCS_SIZE_SHIFT	32
-#define VMX_BASIC_TRUE_CTLS		(1ULL << 55)
-#define VMX_BASIC_64		0x0001000000000000LLU
-#define VMX_BASIC_MEM_TYPE_SHIFT	50
-#define VMX_BASIC_MEM_TYPE_MASK	0x003c000000000000LLU
-#define VMX_BASIC_INOUT		0x0040000000000000LLU
-
 /* Resctrl MSRs: */
 /* - Intel: */
 #define MSR_IA32_L3_QOS_CFG		0xc81
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index e531d8d80a11..81b986e501a9 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -135,6 +135,13 @@ 
 #define VMX_VMFUNC_EPTP_SWITCHING               VMFUNC_CONTROL_BIT(EPTP_SWITCHING)
 #define VMFUNC_EPTP_ENTRIES  512
 
+#define VMX_BASIC_VMCS_SIZE_SHIFT		32
+#define VMX_BASIC_32BIT_PHYS_ADDR_ONLY		BIT_ULL(48)
+#define VMX_BASIC_DUAL_MONITOR_TREATMENT	BIT_ULL(49)
+#define VMX_BASIC_MEM_TYPE_SHIFT		50
+#define VMX_BASIC_INOUT				BIT_ULL(54)
+#define VMX_BASIC_TRUE_CTLS			BIT_ULL(55)
+
 static inline u32 vmx_basic_vmcs_revision_id(u64 vmx_basic)
 {
 	return vmx_basic & GENMASK_ULL(30, 0);