From: Thiago Jung Bauermann <bauerman@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org,
Alexey Kardashevskiy <aik@ozlabs.ru>,
Anshuman Khandual <anshuman.linux@gmail.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Christoph Hellwig <hch@lst.de>,
Michael Ellerman <mpe@ellerman.id.au>,
Mike Anderson <andmike@linux.ibm.com>,
Paul Mackerras <paulus@samba.org>, Ram Pai <linuxram@us.ibm.com>,
Claudio Carvalho <cclaudio@linux.ibm.com>,
Thiago Jung Bauermann <bauerman@linux.ibm.com>
Subject: [PATCH v4 05/16] powerpc/pseries/svm: Add helpers for UV_SHARE_PAGE and UV_UNSHARE_PAGE
Date: Mon, 19 Aug 2019 23:13:15 -0300 [thread overview]
Message-ID: <20190820021326.6884-6-bauerman@linux.ibm.com> (raw)
In-Reply-To: <20190820021326.6884-1-bauerman@linux.ibm.com>
From: Ram Pai <linuxram@us.ibm.com>
These functions are used when the guest wants to grant the hypervisor
access to certain pages.
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
---
arch/powerpc/include/asm/ultravisor-api.h | 2 ++
arch/powerpc/include/asm/ultravisor.h | 24 +++++++++++++++++++++++
2 files changed, 26 insertions(+)
diff --git a/arch/powerpc/include/asm/ultravisor-api.h b/arch/powerpc/include/asm/ultravisor-api.h
index d3503d1f447e..142b0576b89f 100644
--- a/arch/powerpc/include/asm/ultravisor-api.h
+++ b/arch/powerpc/include/asm/ultravisor-api.h
@@ -22,5 +22,7 @@
/* opcodes */
#define UV_ESM 0xF110
+#define UV_SHARE_PAGE 0xF130
+#define UV_UNSHARE_PAGE 0xF134
#endif /* _ASM_POWERPC_ULTRAVISOR_API_H */
diff --git a/arch/powerpc/include/asm/ultravisor.h b/arch/powerpc/include/asm/ultravisor.h
new file mode 100644
index 000000000000..a930aec8c1e3
--- /dev/null
+++ b/arch/powerpc/include/asm/ultravisor.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Ultravisor definitions
+ *
+ * Copyright 2019, IBM Corporation.
+ *
+ */
+#ifndef _ASM_POWERPC_ULTRAVISOR_H
+#define _ASM_POWERPC_ULTRAVISOR_H
+
+#include <asm/asm-prototypes.h>
+#include <asm/ultravisor-api.h>
+
+static inline int uv_share_page(u64 pfn, u64 npages)
+{
+ return ucall_norets(UV_SHARE_PAGE, pfn, npages);
+}
+
+static inline int uv_unshare_page(u64 pfn, u64 npages)
+{
+ return ucall_norets(UV_UNSHARE_PAGE, pfn, npages);
+}
+
+#endif /* _ASM_POWERPC_ULTRAVISOR_H */
next prev parent reply other threads:[~2019-08-20 2:14 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 2:13 [PATCH v4 00/16] Secure Virtual Machine Enablement Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 01/16] powerpc/kernel: Add ucall_norets() ultravisor call handler Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 02/16] powerpc/pseries: Introduce option to build secure virtual machines Thiago Jung Bauermann
2019-09-02 3:29 ` Michael Ellerman
2019-09-03 18:53 ` Thiago Jung Bauermann
2019-09-05 4:03 ` Michael Ellerman
2019-09-05 16:06 ` Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 03/16] powerpc: Add support for adding an ESM blob to the zImage wrapper Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 04/16] powerpc/prom_init: Add the ESM call to prom_init Thiago Jung Bauermann
2019-08-20 2:13 ` Thiago Jung Bauermann [this message]
2019-08-20 2:13 ` [PATCH v4 06/16] powerpc: Introduce the MSR_S bit Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 07/16] powerpc/pseries: Add and use LPPACA_SIZE constant Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 08/16] powerpc/pseries/svm: Use shared memory for LPPACA structures Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 09/16] powerpc/pseries/svm: Use shared memory for Debug Trace Log (DTL) Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 10/16] powerpc/pseries/svm: Unshare all pages before kexecing a new kernel Thiago Jung Bauermann
2019-08-20 2:13 ` [RFC PATCH v4 11/16] powerpc/pseries/svm: Export guest SVM status to user space via sysfs Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 12/16] powerpc/pseries/svm: Disable doorbells in SVM guests Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 13/16] powerpc/pseries/iommu: Don't use dma_iommu_ops on secure guests Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 14/16] powerpc/pseries/svm: Force SWIOTLB for " Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 15/16] Documentation/powerpc: Ultravisor API Thiago Jung Bauermann
2019-08-20 2:13 ` [PATCH v4 16/16] powerpc/configs: Enable secure guest support in pseries and ppc64 defconfigs Thiago Jung Bauermann
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