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Shutemov" X-Google-Original-From: "Kirill A. Shutemov" Received: by box.localdomain (Postfix, from userid 1000) id 0ABFA10205B; Fri, 22 May 2020 15:52:20 +0300 (+03) To: Dave Hansen , Andy Lutomirski , Peter Zijlstra , Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel Cc: David Rientjes , Andrea Arcangeli , Kees Cook , Will Drewry , "Edgecombe, Rick P" , "Kleen, Andi" , x86@kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [RFC 13/16] x86/kvmclock: Share hvclock memory with the host Date: Fri, 22 May 2020 15:52:11 +0300 Message-Id: <20200522125214.31348-14-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200522125214.31348-1-kirill.shutemov@linux.intel.com> References: <20200522125214.31348-1-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: hvclock is shared between the guest and the hypervisor. It has to be accessible by host. Signed-off-by: Kirill A. Shutemov --- arch/x86/kernel/kvmclock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index 34b18f6eeb2c..ac6c2abe0d0f 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -253,7 +253,7 @@ static void __init kvmclock_init_mem(void) * hvclock is shared between the guest and the hypervisor, must * be mapped decrypted. */ - if (sev_active()) { + if (sev_active() || kvm_mem_protected()) { r =3D set_memory_decrypted((unsigned long) hvclock_mem, 1UL << order); if (r) { --=20 2.26.2