x86/entry/64: Correct the comment over SAVE_AND_SET_GSBASE
authorBorislav Petkov <bp@suse.de>
Thu, 20 Aug 2020 09:10:15 +0000 (11:10 +0200)
committerBorislav Petkov <bp@suse.de>
Mon, 24 Aug 2020 08:23:40 +0000 (10:23 +0200)
commit0b2c605fa4ee3117c00b97b7af67791576b28f88
treef9b6b5708f309aac92d8106ddd918662703cafce
parentd012a7190fc1fd72ed48911e77ca97ba4521bccd
x86/entry/64: Correct the comment over SAVE_AND_SET_GSBASE

Add the proper explanation why an LFENCE is not needed in the FSGSBASE
case.

Fixes: c82965f9e530 ("x86/entry/64: Handle FSGSBASE enabled paranoid entry/exit")
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200821090710.GE12181@zn.tnic
arch/x86/entry/entry_64.S