[xen staging] x86/vtd: Switch model check to VFM

[patchbot@xxxxxxx]

commit 8b8b361a426102fb75d08b8c822d70378c384408
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Tue Jul 15 20:36:55 2025 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Thu Jul 17 18:54:49 2025 +0100

    x86/vtd: Switch model check to VFM
    
    This form is shorer and more legible.
    
    No functional change.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/drivers/passthrough/vtd/quirks.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/xen/drivers/passthrough/vtd/quirks.c 
b/xen/drivers/passthrough/vtd/quirks.c
index dc3dac749c..0a10a46d90 100644
--- a/xen/drivers/passthrough/vtd/quirks.c
+++ b/xen/drivers/passthrough/vtd/quirks.c
@@ -30,6 +30,7 @@
 #include <xen/pci_regs.h>
 #include <xen/keyhandler.h>
 #include <asm/msi.h>
+#include <asm/intel-family.h>
 #include <asm/irq.h>
 #include <asm/pci.h>
 
@@ -630,9 +631,7 @@ void __init quirk_iommu_caps(struct vtd_iommu *iommu)
      * model because the client parts don't expose their IOMMUs as PCI devices
      * we could match with a Device ID.
      */
-    if ( boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
-         boot_cpu_data.x86 == 6 &&
-         (boot_cpu_data.x86_model == 0x2a ||
-          boot_cpu_data.x86_model == 0x2d) )
+    if ( boot_cpu_data.vfm == INTEL_SANDYBRIDGE ||
+         boot_cpu_data.vfm == INTEL_SANDYBRIDGE_X )
         iommu->cap &= ~(0xful << 34);
 }
--
generated by git-patchbot for /home/xen/git/xen.git#staging