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Shutemov" X-Google-Original-From: "Kirill A. Shutemov" Received: by box.localdomain (Postfix, from userid 1000) id 465C4102677; Fri, 2 Apr 2021 18:26:59 +0300 (+03) To: Dave Hansen , Andy Lutomirski , Peter Zijlstra , Sean Christopherson , Jim Mattson Cc: David Rientjes , "Edgecombe, Rick P" , "Kleen, Andi" , "Yamahata, Isaku" , x86@kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [RFCv1 5/7] x86/kvmclock: Share hvclock memory with the host Date: Fri, 2 Apr 2021 18:26:43 +0300 Message-Id: <20210402152645.26680-6-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.26.3 In-Reply-To: <20210402152645.26680-1-kirill.shutemov@linux.intel.com> References: <20210402152645.26680-1-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 410C3E00010F X-Stat-Signature: s1d9tcm9it15hinx4fx4sshywqx6e3u4 Received-SPF: none (shutemov.name>: No applicable sender policy available) receiver=imf05; identity=mailfrom; envelope-from=""; helo=mail-lf1-f47.google.com; client-ip=209.85.167.47 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1617377221-764006 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 aa593743acf6..3d004b278dba 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -252,7 +252,7 @@ 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 2.26.3