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FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: bitdefender.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: eUHoPNC+0z2gUe37MdHARAbD6Q7HpPfMTGLNv2VqlR7Qkf5Al+GgadFYLg+BDmP/wKnFRWWkpNXKmYRg2HiY9VVk05beFzwQuBjZ+fFMIfxWVUAE0L4DgMQZ7+RIz+QCebdT6KnGrVbmzlcnLlc/xCYEccIpMAgu1KvgPYa98d5VzQ+RN92UcCtImJlKQz90RDClcaEDR8+aYUL9GxH/EhjOXb+jGBSr4U+cdz+z2Vj7t8WzOjFMxxUfcypK4Vp+uNiJKCt9BKPWHHF+pPWxsoTJdoW6HL1W5Urny/Wpm8CdCgCN84tFMo9Sktt+zUHSw4TlJfqJCuLzf6Osy12jXOfwvzxA80jIRBcn+v+8LVwcFfkEOyQ0N2yJJGnmr3/Ukxeb6lfLbit8tcwfVO8IEAIKXZ7sILtvt/v9/YQSPrE= MIME-Version: 1.0 X-OriginatorOrg: bitdefender.com X-MS-Exchange-CrossTenant-Network-Message-Id: c95226dc-aa99-4513-7e0f-08d6bce3724f X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2019 12:03:58.3646 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 487baf29-f1da-469a-9221-243f830c36f3 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0202MB3328 Subject: [Xen-devel] [PATCH v3 2/3] x86/mm: Introduce altp2m_set_entry_by_page_order X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "tamas@tklengyel.com" , "wei.liu2@citrix.com" , "rcojocaru@bitdefender.com" , "george.dunlap@eu.citrix.com" , "andrew.cooper3@citrix.com" , "jbeulich@suse.com" , Alexandru Stefan ISAILA , "roger.pau@citrix.com" Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP This patch moves common code from p2m_set_altp2m_mem_access() and p2m_change_altp2m_gfn() into one function Signed-off-by: Alexandru Isaila --- xen/arch/x86/mm/mem_access.c | 2 +- xen/include/asm-x86/p2m.h | 11 +++++++++++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/mm/mem_access.c b/xen/arch/x86/mm/mem_access.c index bf67ddb15a..6a22512555 100644 --- a/xen/arch/x86/mm/mem_access.c +++ b/xen/arch/x86/mm/mem_access.c @@ -279,7 +279,7 @@ int p2m_set_altp2m_mem_access(struct domain *d, struct p2m_domain *hp2m, gfn_t gfn2 = _gfn(gfn_l & mask); mfn_t mfn2 = _mfn(mfn_x(mfn) & mask); - /* Note: currently it is not safe to remap to a shared entry */ + /* Note: currently it is not safe to remap to a shared entry */ if ( t != p2m_ram_rw ) return -ESRCH; diff --git a/xen/include/asm-x86/p2m.h b/xen/include/asm-x86/p2m.h index 6de1546d76..90a6c135a7 100644 --- a/xen/include/asm-x86/p2m.h +++ b/xen/include/asm-x86/p2m.h @@ -467,6 +467,17 @@ static inline mfn_t altp2m_get_gfn_type_access( return mfn; } +static inline int altp2m_set_entry_by_page_order( + struct p2m_domain *ap2m, unsigned long gfn, mfn_t mfn, + unsigned int page_order, p2m_type_t t, p2m_access_t a) +{ + unsigned long mask = ~((1UL << page_order) - 1); + gfn_t gfn2 = _gfn(gfn & mask); + mfn_t mfn2 = _mfn(mfn_x(mfn) & mask); + + return ap2m->set_entry(ap2m, gfn2, mfn2, page_order, t, a, 1); +} + /* Syntactic sugar: most callers will use one of these. */ #define get_gfn(d, g, t) get_gfn_type((d), (g), (t), P2M_ALLOC) #define get_gfn_query(d, g, t) get_gfn_type((d), (g), (t), 0)