Message ID | 20180921150351.20898-11-yu-cheng.yu@intel.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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[134.134.136.24]) by mx.google.com with ESMTPS id g2-v6si27080525plq.242.2018.09.21.08.08.49 for <linux-mm@kvack.org> (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 21 Sep 2018 08:08:50 -0700 (PDT) Received-SPF: pass (google.com: domain of yu-cheng.yu@intel.com designates 134.134.136.24 as permitted sender) client-ip=134.134.136.24; Authentication-Results: mx.google.com; spf=pass (google.com: domain of yu-cheng.yu@intel.com designates 134.134.136.24 as permitted sender) smtp.mailfrom=yu-cheng.yu@intel.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Sep 2018 08:08:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,285,1534834800"; d="scan'208";a="71856558" Received: from 2b52.sc.intel.com ([143.183.136.51]) by fmsmga007.fm.intel.com with ESMTP; 21 Sep 2018 08:08:48 -0700 From: Yu-cheng Yu <yu-cheng.yu@intel.com> To: x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>, Andy Lutomirski <luto@amacapital.net>, Balbir Singh <bsingharora@gmail.com>, Cyrill Gorcunov <gorcunov@gmail.com>, Dave Hansen <dave.hansen@linux.intel.com>, Florian Weimer <fweimer@redhat.com>, "H.J. Lu" <hjl.tools@gmail.com>, Jann Horn <jannh@google.com>, Jonathan Corbet <corbet@lwn.net>, Kees Cook <keescook@chromium.org>, Mike Kravetz <mike.kravetz@oracle.com>, Nadav Amit <nadav.amit@gmail.com>, Oleg Nesterov <oleg@redhat.com>, Pavel Machek <pavel@ucw.cz>, Peter Zijlstra <peterz@infradead.org>, Randy Dunlap <rdunlap@infradead.org>, "Ravi V. Shankar" <ravi.v.shankar@intel.com>, Vedvyas Shanbhogue <vedvyas.shanbhogue@intel.com> Cc: Yu-cheng Yu <yu-cheng.yu@intel.com> Subject: [RFC PATCH v4 10/27] drm/i915/gvt: Update _PAGE_DIRTY to _PAGE_DIRTY_BITS Date: Fri, 21 Sep 2018 08:03:34 -0700 Message-Id: <20180921150351.20898-11-yu-cheng.yu@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180921150351.20898-1-yu-cheng.yu@intel.com> References: <20180921150351.20898-1-yu-cheng.yu@intel.com> 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: <linux-mm.kvack.org> X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
Control Flow Enforcement: Shadow Stack
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On Fri, Sep 21, 2018 at 08:03:34AM -0700, Yu-cheng Yu wrote: > Update _PAGE_DIRTY to _PAGE_DIRTY_BITS in split_2MB_gtt_entry(). > > In order to support Control Flow Enforcement (CET), _PAGE_DIRTY > is now _PAGE_DIRTY_HW or _PAGE_DIRTY_SW. > > Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com> > --- > drivers/gpu/drm/i915/gvt/gtt.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c > index 00aad8164dec..2d6ba1462dd8 100644 > --- a/drivers/gpu/drm/i915/gvt/gtt.c > +++ b/drivers/gpu/drm/i915/gvt/gtt.c > @@ -1170,7 +1170,7 @@ static int split_2MB_gtt_entry(struct intel_vgpu *vgpu, > } > > /* Clear dirty field. */ > - se->val64 &= ~_PAGE_DIRTY; > + se->val64 &= ~_PAGE_DIRTY_BITS; _PAGE_DIRTY_BITS is defined only in "[RFC PATCH v4 11/27] x86/mm: Introduce _PAGE_DIRTY_SW",
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c index 00aad8164dec..2d6ba1462dd8 100644 --- a/drivers/gpu/drm/i915/gvt/gtt.c +++ b/drivers/gpu/drm/i915/gvt/gtt.c @@ -1170,7 +1170,7 @@ static int split_2MB_gtt_entry(struct intel_vgpu *vgpu, } /* Clear dirty field. */ - se->val64 &= ~_PAGE_DIRTY; + se->val64 &= ~_PAGE_DIRTY_BITS; ops->clear_pse(se); ops->clear_ips(se);
Update _PAGE_DIRTY to _PAGE_DIRTY_BITS in split_2MB_gtt_entry(). In order to support Control Flow Enforcement (CET), _PAGE_DIRTY is now _PAGE_DIRTY_HW or _PAGE_DIRTY_SW. Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com> --- drivers/gpu/drm/i915/gvt/gtt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)