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x86/mtrr: Document missing function parameters in kernel-doc

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Add text explaining what they do.

No functional changes.

Closes: https://lore.kernel.org/oe-kbuild-all/202311130104.9xKAKzke-lkp@intel.com/
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/202311130104.9xKAKzke-lkp@intel.com
This commit is contained in:
Borislav Petkov (AMD)
2023-11-13 14:52:52 +01:00
parent f7a25cf1d4
commit 4e15b91c5b
1 changed files with 10 additions and 4 deletions
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14
arch/x86/kernel/cpu/mtrr/generic.c
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@@ -428,6 +428,10 @@ void __init mtrr_copy_map(void)
* from the x86_init.hyper.init_platform() hook. It can be called only once.
* The MTRR state can't be changed afterwards. To ensure that, X86_FEATURE_MTRR
* is cleared.
*
* @var: MTRR variable range array to use
* @num_var: length of the @var array
* @def_type: default caching type
*/
void mtrr_overwrite_state(struct mtrr_var_range *var, unsigned int num_var,
mtrr_type def_type)
@@ -492,13 +496,15 @@ static u8 type_merge(u8 type, u8 new_type, u8 *uniform)
/**
* mtrr_type_lookup - look up memory type in MTRR
*
* @start: Begin of the physical address range
* @end: End of the physical address range
* @uniform: output argument:
* - 1: the returned MTRR type is valid for the whole region
* - 0: otherwise
*
* Return Values:
* MTRR_TYPE_(type) - The effective MTRR type for the region
* MTRR_TYPE_INVALID - MTRR is disabled
*
* Output Argument:
* uniform - Set to 1 when the returned MTRR type is valid for the whole
* region, set to 0 else.
*/
u8 mtrr_type_lookup(u64 start, u64 end, u8 *uniform)
{