Commit a27b008a authored by Adrian Hunter's avatar Adrian Hunter Committed by Dave Hansen
Browse files

x86/tdx: Tidy reset_pamt functions 



tdx_quirk_reset_paddr() was renamed to reflect that, in fact, the clearing
is necessary only for hardware with a certain quirk.  That is dealt with in
a subsequent patch.

Rename reset_pamt functions to contain "quirk" to reflect the new
functionality, and remove the now misleading comment.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: default avatarRick Edgecombe <rick.p.edgecombe@intel.com>
Reviewed-by: default avatarBinbin Wu <binbin.wu@linux.intel.com>
Acked-by: default avatarKai Huang <kai.huang@intel.com>
Acked-by: default avatarVishal Annapurve <vannapurve@google.com>
Link: https://lore.kernel.org/all/20250819155811.136099-3-adrian.hunter%40intel.com
parent 94272b08

arch/x86/virt/vmx/tdx/tdx.c

+4 −12
Original line number Diff line number Diff line
@@ -660,17 +660,17 @@ void tdx_quirk_reset_page(struct page *page) 
}

EXPORT_SYMBOL_GPL(tdx_quirk_reset_page);



static void tdmr_reset_pamt(struct tdmr_info *tdmr)

static void tdmr_quirk_reset_pamt(struct tdmr_info *tdmr)

{

	tdmr_do_pamt_func(tdmr, tdx_quirk_reset_paddr);

}



static void tdmrs_reset_pamt_all(struct tdmr_info_list *tdmr_list)

static void tdmrs_quirk_reset_pamt_all(struct tdmr_info_list *tdmr_list)

{

	int i;



	for (i = 0; i < tdmr_list->nr_consumed_tdmrs; i++)

		tdmr_reset_pamt(tdmr_entry(tdmr_list, i));

		tdmr_quirk_reset_pamt(tdmr_entry(tdmr_list, i));

}



static unsigned long tdmrs_count_pamt_kb(struct tdmr_info_list *tdmr_list)
@@ -1142,15 +1142,7 @@ static int init_tdx_module(void) 
	 * to the kernel.

	 */

	wbinvd_on_all_cpus();

	/*

	 * According to the TDX hardware spec, if the platform

	 * doesn't have the "partial write machine check"

	 * erratum, any kernel read/write will never cause #MC

	 * in kernel space, thus it's OK to not convert PAMTs

	 * back to normal.  But do the conversion anyway here

	 * as suggested by the TDX spec.

	 */

	tdmrs_reset_pamt_all(&tdx_tdmr_list);

	tdmrs_quirk_reset_pamt_all(&tdx_tdmr_list);

err_free_pamts:

	tdmrs_free_pamt_all(&tdx_tdmr_list);

err_free_tdmrs: