linux-kernel - Re: [PATCH v2 2/4] KVM: SVM: Add emulation support for #GP triggered by SVM instructions

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Message-ID: <YAoCy5C0Zj97iSjN@google.com>
Date:   Thu, 21 Jan 2021 14:40:11 -0800
From:   Sean Christopherson <seanjc@...gle.com>
To:     Maxim Levitsky <mlevitsk@...hat.com>
Cc:     Wei Huang <whuang2@....com>, Wei Huang <wei.huang2@....com>,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        pbonzini@...hat.com, vkuznets@...hat.com, joro@...tes.org,
        bp@...en8.de, tglx@...utronix.de, mingo@...hat.com, x86@...nel.org,
        jmattson@...gle.com, wanpengli@...cent.com, bsd@...hat.com,
        dgilbert@...hat.com, luto@...capital.net
Subject: Re: [PATCH v2 2/4] KVM: SVM: Add emulation support for #GP triggered
 by SVM instructions

On Thu, Jan 21, 2021, Maxim Levitsky wrote:
> BTW, on unrelated note, currently the smap test is broken in kvm-unit tests.
> I bisected it to commit 322cdd6405250a2a3e48db199f97a45ef519e226
> 
> It seems that the following hack (I have no idea why it works,
> since I haven't dug deep into the area 'fixes', the smap test for me)
> 
> -#define USER_BASE      (1 << 24)
> +#define USER_BASE      (1 << 25)

https://lkml.kernel.org/r/20210121111808.619347-2-imbrenda@linux.ibm.com