Linux4.20針對Meltdown/Spectre/..修正 - 3C
By Mary
at 2018-11-27T13:33
at 2018-11-27T13:33
Table of Contents
※ 引述《SPDY (Alex)》之銘言:
: Revert "x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation"
: It's not ready for the stable trees as there are major slowdowns involved with t
: his patch.
: 簡而言之可說補洞的代價太大了...
: 目前
: 4.19.4
: https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.4
: 和
: 4.14.83
: https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.83
: 撤回STIBP
: 是否加回來或還能怎麼改
: 有待觀察
: 這真是場災難...
: --
https://www.phoronix.com/scan.php?page=article&item=linux-420wip-stibp
有人更新了code 效能又回來了
根據我的破英文 簡單來說 STIBP 現在可以 per-process 去控制
再加上在不必要的時候關掉STIBP
如果這個patch被接受 那大家就可以回家啦 沒42
--
: Revert "x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation"
: It's not ready for the stable trees as there are major slowdowns involved with t
: his patch.
: 簡而言之可說補洞的代價太大了...
: 目前
: 4.19.4
: https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.4
: 和
: 4.14.83
: https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.83
: 撤回STIBP
: 是否加回來或還能怎麼改
: 有待觀察
: 這真是場災難...
: --
https://www.phoronix.com/scan.php?page=article&item=linux-420wip-stibp
有人更新了code 效能又回來了
根據我的破英文 簡單來說 STIBP 現在可以 per-process 去控制
再加上在不必要的時候關掉STIBP
如果這個patch被接受 那大家就可以回家啦 沒42
--
Tags:
3C
All Comments
By Hedda
at 2018-12-01T07:05
at 2018-12-01T07:05
By Rosalind
at 2018-12-02T07:04
at 2018-12-02T07:04
By Queena
at 2018-12-04T12:57
at 2018-12-04T12:57
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