hyperv: SVM enlightened TLB flush support flag

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Bit 22 of HYPERV_CPUID_FEATURES.EDX is specific to SVM and specifies
support for enlightened TLB flush. With this enlightenment enabled,
ASID invalidations flushes only gva->hpa entries. To flush TLB entries
derived from NPT, hypercalls should be used
(HvFlushGuestPhysicalAddressSpace or HvFlushGuestPhysicalAddressList)

Signed-off-by: Vineeth Pillai <viremana@linux.microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Message-Id: <a060f872d0df1955e52e30b877b3300485edb27c.1622730232.git.viremana@linux.microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Vineeth Pillai 2021-06-03 15:14:35 +00:00 • committed by Paolo Bonzini

parent a6c776a952

commit 32431fb253

1 changed files with 9 additions and 0 deletions

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arch/x86/include/asm/hyperv-tlfs.h

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