diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2018-05-12 20:49:16 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-05-17 17:09:19 +0200 |
| commit | fa8ac4988249c38476f6ad678a4848a736373403 (patch) | |
| tree | a885d2aba4f5b6b3532910f4228b90231c212485 /arch/x86/kernel | |
| parent | cc69b34989210f067b2c51d5539b5f96ebcc3a01 (diff) | |
x86/bugs: Expose x86_spec_ctrl_base directly
x86_spec_ctrl_base is the system wide default value for the SPEC_CTRL MSR.
x86_spec_ctrl_get_default() returns x86_spec_ctrl_base and was intended to
prevent modification to that variable. Though the variable is read only
after init and globaly visible already.
Remove the function and export the variable instead.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/cpu/bugs.c | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index feb7d597c265..00f51deba493 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -36,6 +36,7 @@ static void __init ssb_select_mitigation(void); * writes to SPEC_CTRL contain whatever reserved bits have been set. */ u64 __ro_after_init x86_spec_ctrl_base; +EXPORT_SYMBOL_GPL(x86_spec_ctrl_base); /* * The vendor and possibly platform specific bits which can be modified in @@ -141,16 +142,6 @@ void x86_spec_ctrl_set(u64 val) } EXPORT_SYMBOL_GPL(x86_spec_ctrl_set); -u64 x86_spec_ctrl_get_default(void) -{ - u64 msrval = x86_spec_ctrl_base; - - if (static_cpu_has(X86_FEATURE_SPEC_CTRL)) - msrval |= ssbd_tif_to_spec_ctrl(current_thread_info()->flags); - return msrval; -} -EXPORT_SYMBOL_GPL(x86_spec_ctrl_get_default); - void x86_virt_spec_ctrl(u64 guest_spec_ctrl, u64 guest_virt_spec_ctrl, bool setguest) { |