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authorTom Hromatka <tom.hromatka@oracle.com>2018-04-26 10:54:08 -0600
committerDavid S. Miller <davem@davemloft.net>2018-06-05 11:24:55 -0700
commit873c38a4249c9204f7b13e782d1ad0d8767aa22a (patch)
treef400e648aa7da5f5e0654b00fcf6be16603a597e /drivers/char/Kconfig
parentfff75eb2a08c2ac96404a2d79685668f3cf5a7a3 (diff)
char: sparc64: Add privileged ADI driver
SPARC M7 and newer processors utilize ADI to version and protect memory. This driver is capable of reading/writing ADI/MCD versions from privileged user space processes. Addresses in the adi file are mapped linearly to physical memory at a ratio of 1:adi_blksz. Thus, a read (or write) of offset K in the file operates upon the ADI version at physical address K * adi_blksz. The version information is encoded as one version per byte. Intended consumers are makedumpfile and crash. Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com> Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Reviewed-by: Anthony Yznaga <anthony.yznaga@oracle.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/char/Kconfig')
-rw-r--r--drivers/char/Kconfig12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index e538061eadcb..410c30c42120 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -540,5 +540,17 @@ source "drivers/s390/char/Kconfig"
source "drivers/char/xillybus/Kconfig"
+config ADI
+ tristate "SPARC Privileged ADI driver"
+ depends on SPARC64
+ default m
+ help
+ SPARC M7 and newer processors utilize ADI (Application Data
+ Integrity) to version and protect memory. This driver provides
+ read/write access to the ADI versions for privileged processes.
+ This feature is also known as MCD (Memory Corruption Detection)
+ and SSM (Silicon Secured Memory). Intended consumers of this
+ driver include crash and makedumpfile.
+
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