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Wed, 27 Apr 2022 16:54:03 +0800 Subject: Re: [RFC PATCH -next v2 3/4] arm64/ftrace: support dynamically allocated trampolines To: Steven Rostedt , Mark Rutland CC: , , , , , , , , References: <20220316100132.244849-1-bobo.shaobowang@huawei.com> <20220316100132.244849-4-bobo.shaobowang@huawei.com> <20220421100639.03c0d123@gandalf.local.home> From: "Wangshaobo (bobo)" Message-ID: <57b0c058-963b-fa9e-453c-b29165e13b45@huawei.com> Date: Wed, 27 Apr 2022 16:54:03 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.1.0 MIME-Version: 1.0 In-Reply-To: <20220421100639.03c0d123@gandalf.local.home> X-Originating-IP: [10.174.177.133] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemm500015.china.huawei.com (7.185.36.181) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220427_015420_490189_12610CF1 X-CRM114-Status: GOOD ( 18.01 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="gbk"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org CtTaIDIwMjIvNC8yMSAyMjowNiwgU3RldmVuIFJvc3RlZHQg0LS1wDoKPiBPbiBUaHUsIDIxIEFw ciAyMDIyIDE0OjEwOjA0ICswMTAwCj4gTWFyayBSdXRsYW5kIDxtYXJrLnJ1dGxhbmRAYXJtLmNv bT4gd3JvdGU6Cj4KPj4gT24gV2VkLCBNYXIgMTYsIDIwMjIgYXQgMDY6MDE6MzFQTSArMDgwMCwg V2FuZyBTaGFvQm8gd3JvdGU6Cj4+PiBGcm9tOiBDaGVuZyBKaWFuIDxjai5jaGVuZ2ppYW5AaHVh d2VpLmNvbT4KPj4+Cj4+PiBXaGVuIHRyYWNpbmcgbXVsdGlwbGUgZnVuY3Rpb25zIGN1c3RvbWx5 LCBhIGxpc3QgZnVuY3Rpb24gaXMgY2FsbGVkCj4+PiBpbiBmdHJhY2VfKHJlZ3MpX2NhbGxlciwg d2hpY2ggbWFrZXMgYWxsIHRoZSBvdGhlciB0cmFjZWQgZnVuY3Rpb25zCj4+PiByZWNoZWNrIHRo ZSBoYXNoIG9mIHRoZSBmdHJhY2Vfb3BzIHdoZW4gdHJhY2luZyBoYXBwZW5kLCBhcHBhcmVudGx5 Cj4+PiBpdCBpcyBpbmVmZmljaWVudC4KPj4gLi4uIGFuZCB3aGVuIGRvZXMgdGhhdCBhY3R1YWxs eSBtYXR0ZXI/IFdobyBkb2VzIHRoaXMgYW5kIHdoeT8KPiBJIGRvbid0IHRoaW5rIGl0IHdhcyBl eHBsYWluZWQgcHJvcGVybHkuIFdoYXQgZHluYW1pY2FsbHkgYWxsb2NhdGVkCj4gdHJhbXBvbGlu ZXMgZ2l2ZSB5b3UgaXMgdGhpcy4KPgo+IExldCdzIHNheSB5b3UgaGF2ZSAxMCBmdHJhY2Vfb3Bz IHJlZ2lzdGVyZWQgKHdpdGggYnBmIGFuZCBrcHJvYmVzIHRoaXMgY2FuCj4gYmUgcXVpdGUgY29t bW9uKS4gQnV0IGVhY2ggb2YgdGhlc2UgZnRyYWNlX29wcyB0cmFjZXMgYSBmdW5jdGlvbiAob3IK PiBmdW5jdGlvbnMpIHRoYXQgYXJlIG5vdCBiZWluZyB0cmFjZWQgYnkgdGhlIG90aGVyIGZ0cmFj ZV9vcHMuIFRoYXQgaXMsIGVhY2gKPiBmdHJhY2Vfb3BzIGhhcyBpdHMgb3duIHVuaXF1ZSBmdW5j dGlvbihzKSB0aGF0IHRoZXkgYXJlIHRyYWNpbmcuIE9uZSBjb3VsZAo+IGJlIHRyYWNpbmcgc2No ZWR1bGUsIHRoZSBvdGhlciBjb3VsZCBiZSB0cmFjaW5nIGtzb2Z0aXJxZF9zaG91bGRfcnVuCj4g KHdoYXRldmVyKS4KPgo+IFdpdGhvdXQgdGhpcyBjaGFuZ2UsIGJlY2F1c2UgdGhlIGFyY2ggZG9l cyBub3Qgc3VwcG9ydCBkeW5hbWljYWxseQo+IGFsbG9jYXRlZCB0cmFtcG9saW5lcywgaXQgbWVh bnMgdGhhdCBhbGwgdGhlc2UgZnRyYWNlX29wcyB3aWxsIGJlCj4gcmVnaXN0ZXJlZCB0byB0aGUg c2FtZSB0cmFtcG9saW5lLiBUaGF0IG1lYW5zLCBmb3IgZXZlcnkgZnVuY3Rpb24gdGhhdCBpcwo+ IHRyYWNlZCwgaXQgd2lsbCBsb29wIHRocm91Z2ggYWxsIDEwIG9mIHRoZXNlcyBmdHJhY2Vfb3Bz IGFuZCBjaGVjayB0aGVpcgo+IGhhc2hlcyB0byBzZWUgaWYgdGhlaXIgY2FsbGJhY2sgc2hvdWxk IGJlIGNhbGxlZCBvciBub3QuCj4KPiBXaXRoIGR5bmFtaWNhbGx5IGFsbG9jYXRlZCB0cmFtcG9s aW5lcywgZWFjaCBmdHJhY2Vfb3BzIHdpbGwgaGF2ZSB0aGVpciBvd24KPiB0cmFtcG9saW5lLCBh bmQgdGhhdCB0cmFtcG9saW5lIHdpbGwgYmUgY2FsbGVkIGRpcmVjdGx5IGlmIHRoZSBmdW5jdGlv bgo+IGlzIG9ubHkgYmVpbmcgdHJhY2VkIGJ5IHRoZSBvbmUgZnRyYWNlX29wcy4gVGhpcyBpcyBt dWNoIG1vcmUgZWZmaWNpZW50Lgo+Cj4gSWYgYSBmdW5jdGlvbiBpcyB0cmFjZWQgYnkgbW9yZSB0 aGFuIG9uZSBmdHJhY2Vfb3BzLCB0aGVuIGl0IGZhbGxzIGJhY2sgdG8KPiB0aGUgbG9vcC4KPgo+ IC0tIFN0ZXZlCj4gLgoKeWVzLCB0aGlzIGV4cGxhbmF0aW9uIGlzIGVhc2llciB0byB1bmRlcnN0 YW5kLCBJIHdpbGwgdXBkYXRlIGNvbW1pdCAKZGVzY3JpcHRpb24gYWNjb3JkaW5nIHRvIHRoaXMu CgotLSBXYW5nIFNoYW9CbwoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxA bGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xp c3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK