x86/kvm: Allow runtime control of L1D flush

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All mitigation modes can be switched at run time with a static key now:

 - Use sysfs_streq() instead of strcmp() to handle the trailing new line
   from sysfs writes correctly.
 - Make the static key management handle multiple invocations properly.
 - Set the module parameter file to RW

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20180713142322.954525119@linutronix.de

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Thomas Gleixner 2018-07-13 16:23:22 +02:00

parent dd4bfa739a

commit 895ae47f99

2 changed files with 9 additions and 6 deletions

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2

arch/x86/kernel/cpu/bugs.c

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13

arch/x86/kvm/vmx.c

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