Messages in this thread | | | Subject | Re: [PATCH 3/4] KVM: x86: hyper-v: Fix the maximum number of sparse banks for XMM fast TLB flush hypercalls | Date | Mon, 28 Feb 2022 11:47:21 +0100 | From | Siddharth Chandrasekaran <> |
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On Tue, Feb 22, 2022 at 04:46:41PM +0100, Vitaly Kuznetsov wrote: > CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you can confirm the sender and know the content is safe. > > > > When TLB flush hypercalls (HVCALL_FLUSH_VIRTUAL_ADDRESS_{LIST,SPACE}_EX are > issued in 'XMM fast' mode, the maximum number of allowed sparse_banks is > not 'HV_HYPERCALL_MAX_XMM_REGISTERS - 1' (5) but twice as many (10) as each > XMM register is 128 bit long and can hold two 64 bit long banks. > > Fixes: 5974565bc26d ("KVM: x86: kvm_hv_flush_tlb use inputs from XMM registers") > Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Indeed :)
Reviewed-by: Siddharth Chandrasekaran <sidcha@amazon.de>
Amazon Development Center Germany GmbH Krausenstr. 38 10117 Berlin Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B Sitz: Berlin Ust-ID: DE 289 237 879
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