x86/mm: Change cpa_flush() to call flush_kernel_range() directly

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The function cpa_flush() calls __flush_tlb_one_kernel() and
flush_tlb_all().

Replacing that with a call to flush_tlb_kernel_range() allows
cpa_flush() to make use of INVLPGB or RAR without any additional
changes.

Initialize invlpgb_count_max to 1, since flush_tlb_kernel_range()
can now be called before invlpgb_count_max has been initialized
to the value read from CPUID.

[riel: remove now unused __cpa_flush_tlb]

Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Signed-off-by: Rik van Riel <riel@surriel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/20250606171112.4013261-4-riel%40surriel.com

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Yu-cheng Yu 2025-06-06 13:10:35 -04:00 • committed by Dave Hansen

parent c17b750b3a

commit 86e6815b31

1 changed files with 7 additions and 13 deletions

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arch/x86/mm/pat/set_memory.c

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