1ARCH_PHYS_WC_ADD(9)           Hardware Interfaces          ARCH_PHYS_WC_ADD(9)
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NAME

6       arch_phys_wc_add - add a WC MTRR and handle errors if PAT is
7       unavailable
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SYNOPSIS

10       int arch_phys_wc_add(unsigned long base, unsigned long size);
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ARGUMENTS

13       base
14           Physical base address
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16       size
17           Size of region
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DESCRIPTION

20       If PAT is available, this does nothing. If PAT is unavailable, it
21       attempts to add a WC MTRR covering size bytes starting at base and logs
22       an error if this fails.
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24       Drivers must store the return value to pass to mtrr_del_wc_if_needed,
25       but drivers should not try to interpret that return value.
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28Kernel Hackers Manual 3.10         June 2019               ARCH_PHYS_WC_ADD(9)
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