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author | David S. Miller <davem@davemloft.net> | 2017-06-15 17:31:37 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2017-06-15 17:59:32 +0200 |
commit | 0ddead90b223faae475f3296a50bf574b7f7c69a (patch) | |
tree | e729c7fcdc7e3697f7fae2f3028ed0d11931c425 /include/acpi/actbl.h | |
parent | rxrpc: Cache the congestion window setting (diff) | |
parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff) | |
download | linux-0ddead90b223faae475f3296a50bf574b7f7c69a.tar.xz linux-0ddead90b223faae475f3296a50bf574b7f7c69a.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The conflicts were two cases of overlapping changes in
batman-adv and the qed driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/acpi/actbl.h')
-rw-r--r-- | include/acpi/actbl.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h index d92543f3bbfd..bdc55c0da19c 100644 --- a/include/acpi/actbl.h +++ b/include/acpi/actbl.h @@ -374,6 +374,20 @@ struct acpi_table_desc { u16 validation_count; }; +/* + * Maximum value of the validation_count field in struct acpi_table_desc. + * When reached, validation_count cannot be changed any more and the table will + * be permanently regarded as validated. + * + * This is to prevent situations in which unbalanced table get/put operations + * may cause premature table unmapping in the OS to happen. + * + * The maximum validation count can be defined to any value, but should be + * greater than the maximum number of OS early stage mapping slots to avoid + * leaking early stage table mappings to the late stage. + */ +#define ACPI_MAX_TABLE_VALIDATIONS ACPI_UINT16_MAX + /* Masks for Flags field above */ #define ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL (0) /* Virtual address, external maintained */ |