<![CDATA[铚楃獫绉戞妧]]> http://www.71402172.com/ zh-cn www.emlog.net 娴呰皥Cache Memory http://www.71402172.com/memory_management/458.html 浠婂ぉ鎺?#32460;?#37928;勪富棰樻槸cache銆傛垜浠洿缁曞嚑涓棶棰樺?#26334;紑銆?#28051;?#28000;涔堥渶瑕乧ache锛熷?#20633;?#26334;垽鏂?#28051;涓暟鎹湪cache涓槸鍚﹀懡涓?#38171;焎ache鐨?#32457;?#32491;?#37832;?#37725;?#27996;涳紝?#23599;鍒槸浠涔?#38171;?/span> 闃呰鍏?#37826;?gt;>]]> Thu, 02 May 2019 13:14:57 +0000 smcdef http://www.71402172.com/memory_management/458.html 鍐呭瓨涓鑷存фā鍨?/title> <link>http://www.71402172.com/memory_management/456.html</link> <description><![CDATA[<p class="MsoNormal" style="white-space:normal;"> 鏃?#37832;?#37928;?span lang="EN-US">CPU</span>?#27128;閫氳繃鎻愰珮?#23500;棰戞潵鎻?#37719;?span lang="EN-US">CPU</span>鐨勬ц兘?#32029;浣嗘槸?#27554;鐫棰戠巼鈥滅孩鍒?#37413;濊秺鏉ヨ?#23106;?#20276;毦鐨勬儏鍐典笅?#32029;?#24054;鍟?#23534;濮嬬敤澶氭牳鏉?#37819;愰珮<span lang="EN-US">CPU</span>鐨勮绠楄兘鍔?#37510;?#28598;氭牳?#27128;鎸?#28051;涓?span lang="EN-US">CPU</span>閲?#37832;?#28598;?#28051;牳?#32318;?#32029;?#28266;鍚?#28051;鏃堕棿涓涓?span lang="EN-US">CPU</span>?#20824;澶熷悓鏃?#26473;愯?#23677;涓?#32510;跨?#23350;紝閫氳繃杩?#37837;?#37819;愰珮<span lang="EN-US">CPU</span>鐨勫苟鍙戣兘鍔?#37510;? </p> <p class="MsoNormal" style="white-space:normal;"> <span lang="EN-US"> </span><span style="text-indent:21pt;">鍐呭瓨涓鑷存фā鍨?#38171;?/span><span lang="EN-US" style="text-indent:21pt;">memory consistency model</span><span style="text-indent:21pt;">锛夊氨?#27128;?#25956;鏉?#37819;?#26473;?#28598;?#32510;跨▼瀵?#37711;?#27996;?#28699;樺偍?#27346;鐨勮?#22359;棶琛?#28051;猴紝?#28266;涓?#37722;?#37928;?#37712;呭瓨涓鑷存фā鍨?#38322;岋紝澶?#32510;跨▼瀵?#37711;?#27996;?#28699;樺偍?#27346;鐨勮?#22359;棶琛?#28051;?#37832;?#38344;炲父澶?#37928;勫樊鍒?#37510;?#26473;?#27996;?#23480;?#37714;細涓?#38322;?#35120;?#37725;?#32459;嬪簭鐨勬墽琛岄昏緫?#32029;?#25931;鑷充細閫犳?#24879;蔣浠堕昏緫?#26870;棰?#37510;傚湪鍚?#38344;?#37928;?#28000;?#32513;?#28051;紝?#22428;浠皢鍒嗘瀽涓?#37722;?#37928;勪竴鑷存фā鍨?#38322;岋紝澶?#32510;跨▼鐨?#37712;呭瓨璁块棶涔卞簭?#26870;棰?#37510;?/span> </p> <a href="http://www.71402172.com/memory_management/456.html">闃呰鍏?#37826;?gt;></a>]]></description> <pubDate>Sun, 24 Mar 2019 06:22:03 +0000</pubDate> <author>passerby</author> <guid>http://www.71402172.com/memory_management/456.html</guid> </item> <item> <title>copy_{to,from}_user()鐨勬濊?/title> <link>http://www.71402172.com/memory_management/454.html</link> <description><![CDATA[<p> <span style="display:inline !important;float:none;background-color:transparent;color:#000000;font-family:"font-size:12px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;orphans:2;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;-webkit-text-stroke-width:0px;white-space:normal;word-spacing:0px;word-wrap:break-word;">?#22428;浠?#28725;筩opy_{to,from}_user()鎺?#37721;?#37928;勪?#36328;敤搴?#29831;ユ槸鍐嶇啛鎮?#28051;嶈繃鍚?#37510;傚熀鏈琇inux涔?#32491;嶉兘?#32048;浠?#32513;嶅畠鐨勪?#28357;敤銆傛瘯绔熷畠?#27128;kernel space鍜寀ser space娌?#38315;?#37928;勬ˉ姊?#37510;傛墍鏈?#37928;勬暟鎹?#27996;?#27996;掗兘搴?#29831;?#28003;跨敤绫?#28028;?#26473;?#32457;?#37818;?#37721;?#37510;傛墍浠ワ紝浠婂ぉ?#22428;浠?#28051;璧?#37818;?#32460;朵笅</span><span style="display:inline !important;float:none;background-color:transparent;color:#000000;font-family:"font-size:12px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;orphans:2;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;-webkit-text-stroke-width:0px;white-space:normal;word-spacing:0px;word-wrap:break-word;">copy_{to,from}_user()</span>鎺?#37721;?#37928;勪?#28357;敤銆?#38315;氳繃鏈?#37826;?#37721;?#28000;?#29785;g瓟浠ヤ笅?#26870;棰?#37510;?</p> <ol> <li> <span style="display:inline !important;float:none;background-color:transparent;color:#000000;font-family:"font-size:12px;font-size-adjust:none;font-stretch:100%;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;line-height:18px;orphans:2;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;-webkit-text-stroke-width:0px;white-space:normal;word-spacing:0px;word-wrap:break-word;">涓?#28000;涔堥渶瑕乧opy_{to,from}_user()?#32029;瀹冪┒绔熷湪鑳?#37722;?#28051;烘垜浠?#37707;?#27996;?#28000;涔?#38171;?/span> </li> <li> <span style="display:inline !important;float:none;background-color:transparent;color:#000000;font-family:"font-size:12px;font-size-adjust:none;font-stretch:100%;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;line-height:18px;orphans:2;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;-webkit-text-stroke-width:0px;white-space:normal;word-spacing:0px;word-wrap:break-word;">copy_{to,from}_user()鍜宮emcpy()鐨勫尯鍒槸浠涔堬紝?#27967;鎺?#28003;跨敤memcpy()鍙?#28000;?#37722;?#38171;?/span> </li> <li> <span style="display:inline !important;float:none;background-color:transparent;color:#000000;font-family:"font-size:12px;font-size-adjust:none;font-stretch:100%;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;line-height:18px;orphans:2;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;-webkit-text-stroke-width:0px;white-space:normal;word-spacing:0px;word-wrap:break-word;">memcpy()鏇?#28000;opy_{to,from}_user()?#27128;涓嶆槸涓瀹氫細鏈夐棶棰?#38171;?/span><br /> </li> </ol> <a href="http://www.71402172.com/memory_management/454.html">闃呰鍏?#37826;?gt;></a>]]></description> <pubDate>Sun, 27 Jan 2019 11:03:28 +0000</pubDate> <author>smcdef</author> <guid>http://www.71402172.com/memory_management/454.html</guid> </item> <item> <title>KASLR http://www.71402172.com/memory_management/441.html 寮曡█ 浠涔堟槸KASLR锛烱ASLR?#27128;kernel address space layout randomization鐨勭缉鍐欙紝?#27967;璇戣繃鏉ュ氨?#27128;鍐呮牳鍦板潃绌洪棿甯冨眬?#27554;鏈?#37718;?#37510;侹ASLR?#22951;鏈?#37711;?#29825;竗ernel image鍔?#26462;?#37714;癡MALLOC?#23599;?#29017;鐨?#28000;?#28003;?#28003;嶇疆銆傚綋KASLR鍏?#38338;?#37928;?#37827;?#37706;欙紝kernel image?#20824;?#32048;鏄?#28751;?#37714;?#28051;涓?#37733;?#28729;?#37928;?#38334;?#37818;?#37734;板潃銆傚浜庨粦瀹?#37833;?#29831;存槸閫?#37828;?#37928;勶紝鍥犳瀹?#37711;?#37804;у緱涓?#37714;颁?#28618;瘉銆侹ASLR?#22951;鏈?#37721;?#28000;?#29825;﹌ernel image鏄?#28751;?#37928;勫?#26495;潃鐩稿浜庨摼鎺?#37734;板潃鏈?#28051;?#37707;?#32457;?#37510;傚亸绉?#37734;板潃鍙?#28000;?#38315;氳繃dts璁?#32515;?#37510;傚?#20635;?#28162;ootloader鏀?#37816;?#23011;忔寮鏈洪殢鏈?#37922;熸垚鍋?#32457;绘暟鍊硷紝閭?#28052;?#37721;?#28000;?#37707;?#37714;版?#24532;寮鏈簁ernel image鏄?#28751;?#37928;勮?#27693;?#29111;?#26495;潃?#20824;涓?#28051;鏍?#37510;?#37733;犳?#32029;瀵?#27996;?#23534;鍚疜ASLR鐨刱ernel鏉?#29831;達紝涓?#37722;?#37928;?#27996;?#37725;?#37928;刱ernel image鏄?#28751;?#37928;勫?#26495;潃?#22161;涔庨兘涓?#28051;鏍?#37510;?#37733;犳?#28266;瀹?#37711;?#37804;?#28051;?#37832;?#28051;瀹?#37928;?#37819;?#37719;?#37510;?闃呰鍏?#37826;?gt;>]]> Sun, 06 May 2018 02:00:16 +0000 smcdef http://www.71402172.com/memory_management/441.html fixmap addresses鍘熺悊 http://www.71402172.com/memory_management/440.html 寮曡█

fixmap?#27128;涓娈?#37733;?#28729;?#37734;板潃鏄?#28751;?#37510;俴ernel棰勭暀涓娈佃?#27693;?#29111;?#26495;潃绌洪棿銆?#37733;犳铏氭?#29111;?#26495;潃?#27128;?#28266;缂?#29831;?#37928;?#37827;?#37706;欑‘瀹?#37510;俧ixmap鍙?#28000;ョ敤鏉?#37707;?#28000;涔?#38171;焝ernel鍚?#37716;?#37714;?#37832;燂紝鐢?#27996;?#23005;?#37827;?#37928;刱ernel宸?#32513;?#26473;愯?#23677;湪铏氭?#29111;?#26495;潃涓?#37510;?#37733;犳?#22428;浠?#29825;块棶鍏?#28003;?#37928;勭墿鐞嗗?#26495;潃?#27128;涓?#29723;?#37928;勶紝?#32320;椤诲缓绔嬭?#27693;?#29111;?#26495;潃鍜岀墿鐞嗗?#26495;潃鐨?#37828;?#28751;勶紝鐒?#37722;?#38315;氳繃铏氭?#29111;?#26495;潃璁块棶鎵?#37721;?#28000;?#37510;備?#23338;锛歞tb涓?#37718;?#37722;玝ootloader浼?#38315;掕繃鏉?#37928;?#37712;呭瓨淇℃伅?#32029;?#22428;浠渶瑕?#29785;f瀽dtb?#32029;浣嗘槸?#22428;浠緱鍒?#37928;勬槸dtb鐨勭墿鐞嗗?#26495;潃銆?#37733;犳璁块棶涔嬪?#23941;繀椤?#37714;涘缓鏄?#28751;勶紝鍒涘缓鏄?#28751;勫?#22565;渶瑕?#37712;呭瓨銆備絾?#27128;鐢?#27996;庢墍鏈?#37928;?#37712;呭瓨绠?#37918;嗗?#24878;郴缁?#26473;樻病鏈塺eady銆?#37733;犳?#22428;浠?#28051;嶈兘浣跨敤ioremap鎺?#37721;?#37714;涘缓鏄?#28751;?#37510;?#28051;烘kernel鎻愬嚭fixmap鐨勮В鍐?#37826;?#22935;?#37510;?

闃呰鍏?#37826;?gt;>]]>
Sun, 29 Apr 2018 12:35:14 +0000 smcdef http://www.71402172.com/memory_management/440.html
连码三全中是什么
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