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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 v2 04/13] powerpc/pseries/svm: Add helpers for UV_SHARE_PAGE and UV_UNSHARE_PAGE
Date: Sat, 13 Jul 2019 03:00:14 -0300	[thread overview]
Message-ID: <20190713060023.8479-5-bauerman@linux.ibm.com> (raw)
In-Reply-To: <20190713060023.8479-1-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     | 15 +++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/arch/powerpc/include/asm/ultravisor-api.h b/arch/powerpc/include/asm/ultravisor-api.h
index fe9a0d8d7673..c7513bbadf57 100644
--- a/arch/powerpc/include/asm/ultravisor-api.h
+++ b/arch/powerpc/include/asm/ultravisor-api.h
@@ -25,6 +25,8 @@
 #define UV_UNREGISTER_MEM_SLOT		0xF124
 #define UV_PAGE_IN			0xF128
 #define UV_PAGE_OUT			0xF12C
+#define UV_SHARE_PAGE			0xF130
+#define UV_UNSHARE_PAGE			0xF134
 #define UV_PAGE_INVAL			0xF138
 #define UV_SVM_TERMINATE		0xF13C
 
diff --git a/arch/powerpc/include/asm/ultravisor.h b/arch/powerpc/include/asm/ultravisor.h
index f5dc5af739b8..f7418b663a0e 100644
--- a/arch/powerpc/include/asm/ultravisor.h
+++ b/arch/powerpc/include/asm/ultravisor.h
@@ -91,6 +91,21 @@ static inline int uv_svm_terminate(u64 lpid)
 
 	return ucall(UV_SVM_TERMINATE, retbuf, lpid);
 }
+
+static inline int uv_share_page(u64 pfn, u64 npages)
+{
+	unsigned long retbuf[UCALL_BUFSIZE];
+
+	return ucall(UV_SHARE_PAGE, retbuf, pfn, npages);
+}
+
+static inline int uv_unshare_page(u64 pfn, u64 npages)
+{
+	unsigned long retbuf[UCALL_BUFSIZE];
+
+	return ucall(UV_UNSHARE_PAGE, retbuf, pfn, npages);
+}
+
 #endif /* !__ASSEMBLY__ */
 
 #endif	/* _ASM_POWERPC_ULTRAVISOR_H */


  parent reply	other threads:[~2019-07-13  6:01 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-13  6:00 [PATCH v2 00/13] Secure Virtual Machine Enablement Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 01/13] powerpc/pseries: Introduce option to build secure virtual machines Thiago Jung Bauermann
2019-07-13  6:00 ` [RFC PATCH v2 02/13] powerpc: Add support for adding an ESM blob to the zImage wrapper Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 03/13] powerpc/prom_init: Add the ESM call to prom_init Thiago Jung Bauermann
2019-07-18  8:11   ` Alexey Kardashevskiy
2019-07-18 19:58     ` Segher Boessenkool
2019-07-18 21:28       ` Thiago Jung Bauermann
2019-07-19  0:09         ` Alexey Kardashevskiy
2019-07-19  0:48           ` Thiago Jung Bauermann
2019-07-13  6:00 ` Thiago Jung Bauermann [this message]
2019-07-18  8:13   ` [PATCH v2 04/13] powerpc/pseries/svm: Add helpers for UV_SHARE_PAGE and UV_UNSHARE_PAGE Alexey Kardashevskiy
2019-07-18 20:12     ` Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 05/13] powerpc/pseries: Add and use LPPACA_SIZE constant Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 06/13] powerpc/pseries/svm: Use shared memory for LPPACA structures Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 07/13] powerpc/pseries/svm: Use shared memory for Debug Trace Log (DTL) Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 08/13] powerpc/pseries/svm: Unshare all pages before kexecing a new kernel Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 09/13] powerpc/pseries/svm: Export guest SVM status to user space via sysfs Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 10/13] powerpc/pseries/svm: Disable doorbells in SVM guests Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 11/13] powerpc/pseries/iommu: Don't use dma_iommu_ops on secure guests Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 12/13] powerpc/pseries/svm: Force SWIOTLB for " Thiago Jung Bauermann
2019-07-13  6:00 ` [PATCH v2 13/13] powerpc/configs: Enable secure guest support in pseries and ppc64 defconfigs Thiago Jung Bauermann

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