Chang S. Bae 87ab4689ca x86/fsgsbase/64: Fix the base write helper functions ... Andy spotted a regression in the fs/gs base helpers after the patch series was committed. The helper functions which write fs/gs base are not just writing the base, they are also changing the index. That's wrong and needs to be separated because writing the base has not to modify the index. While the regression is not causing any harm right now because the only caller depends on that behaviour, it's a guarantee for subtle breakage down the road. Make the index explicitly changed from the caller, instead of including the code in the helpers. Subsequently, the task write helpers do not handle for the current task anymore. The range check for a base value is also factored out, to minimize code redundancy from the caller. Fixes: b1378a561f ("x86/fsgsbase/64: Introduce FS/GS base helper functions") Suggested-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andy Lutomirski <luto@kernel.org> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ravi Shankar <ravi.v.shankar@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Link: https://lkml.kernel.org/r/20181126195524.32179-1-chang.seok.bae@intel.com		2018-12-18 14:26:09 +01:00
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asm	x86/fsgsbase/64: Fix the base write helper functions	2018-12-18 14:26:09 +01:00
uapi/asm	x86/acpi, x86/boot: Take RSDP address from boot params if available	2018-11-20 09:43:11 +01:00