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    SubjectRe: [PATCH v7 01/17] arm64: allow late use of early_ioremap
    On 01/14/2015 09:04 AM, Hanjun Guo wrote:
    > From: Mark Salter <msalter@redhat.com>
    >
    > Commit 0e63ea48b4d8 (arm64/efi: add missing call to early_ioremap_reset())
    > added a missing call to early_ioremap_reset(). This triggers a BUG if code
    > tries using early_ioremap() after the early_ioremap_reset(). This is a
    > problem for some ACPI code which needs short-lived temporary mappings
    > after paging_init() but before acpi_early_init() in start_kernel(). This
    > patch adds definitions for the __late_set_fixmap() and __late_clear_fixmap()
    > which avoids the BUG by allowing later use of early_ioremap().
    >
    > Signed-off-by: Mark Salter <msalter@redhat.com>
    > CC: Leif Lindholm <leif.lindholm@linaro.org>
    > CC: Ard Biesheuvel <ard.biesheuvel@linaro.org>
    > [hj: update the change log]
    > Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
    > ---
    Tested-by: Mark Langsdorf <mlangsdo@redhat.com>



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