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* EDAC/{i7core,sb,pnd2,skx}: Fix error event severityTony Luck2020-09-031-2/+2
| | | | | | | | | | | | | | | | | | | | | [ Upstream commit 45bc6098a3e279d8e391d22428396687562797e2 ] IA32_MCG_STATUS.RIPV indicates whether the return RIP value pushed onto the stack as part of machine check delivery is valid or not. Various drivers copied a code fragment that uses the RIPV bit to determine the severity of the error as either HW_EVENT_ERR_UNCORRECTED or HW_EVENT_ERR_FATAL, but this check is reversed (marking errors where RIPV is set as "FATAL"). Reverse the tests so that the error is marked fatal when RIPV is not set. Reported-by: Gabriele Paoloni <gabriele.paoloni@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/20200707194324.14884-1-tony.luck@intel.com Signed-off-by: Sasha Levin <sashal@kernel.org>
* EDAC: skx_common: get rid of unused type varMauro Carvalho Chehab2020-09-031-4/+1
| | | | | | | | | | | | | | [ Upstream commit f05390d30e20cccd8f8de981dee42bcdd8d2d137 ] drivers/edac/skx_common.c: In function ‘skx_mce_output_error’: drivers/edac/skx_common.c:478:8: warning: variable ‘type’ set but not used [-Wunused-but-set-variable] 478 | char *type, *optype; | ^~~~ Acked-by: Borislav Petkov <bp@alien8.de> Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
* EDAC/skx: Use the mcmtr register to retrieve close_pg/bank_xor_enableQiuxu Zhuo2020-06-171-3/+3
| | | | | | | | | | | | | | | | | commit 1032095053b34d474aa20f2625d97dd306e0991b upstream. The skx_edac driver wrongly uses the mtr register to retrieve two fields close_pg and bank_xor_enable. Fix it by using the correct mcmtr register to get the two fields. Cc: <stable@vger.kernel.org> Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Reported-by: Matthew Riley <mattdr@google.com> Acked-by: Aristeu Rozanski <aris@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Link: https://lore.kernel.org/r/20200515210146.1337-1-tony.luck@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* EDAC: skx_common: downgrade message importance on missing PCI deviceAristeu Rozanski2020-03-051-1/+1
| | | | | | | | | | | | | | | | | | [ Upstream commit 854bb48018d5da261d438b2232fa683bdb553979 ] Both skx_edac and i10nm_edac drivers are loaded based on the matching CPU being available which leads the module to be automatically loaded in virtual machines as well. That will fail due the missing PCI devices. In both drivers the first function to make use of the PCI devices is skx_get_hi_lo() will simply print EDAC skx: Can't get tolm/tohm for each CPU core, which is noisy. This patch makes it a debug message. Signed-off-by: Aristeu Rozanski <aris@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Link: https://lore.kernel.org/r/20191204212325.c4k47p5hrnn3vpb5@redhat.com Signed-off-by: Sasha Levin <sashal@kernel.org>
* EDAC, skx, i10nm: Fix source ID register offsetQiuxu Zhuo2019-06-261-2/+2
| | | | | | | | The source ID register offset for Skylake server is 0xf0, while for Icelake server is 0xf8. Pass the correct offset to get the source ID. Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* EDAC, skx, i10nm: Make skx_common.c a pure libraryQiuxu Zhuo2019-03-231-47/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following Kconfig constellations fail randconfig builds: CONFIG_ACPI_NFIT=y CONFIG_EDAC_DEBUG=y CONFIG_EDAC_SKX=m CONFIG_EDAC_I10NM=y or CONFIG_ACPI_NFIT=y CONFIG_EDAC_DEBUG=y CONFIG_EDAC_SKX=y CONFIG_EDAC_I10NM=m with: ... CC [M] drivers/edac/skx_common.o ... .../skx_common.o:.../skx_common.c:672: undefined reference to `__this_module' That is because if one of the two drivers - skx_edac or i10nm_edac - is built-in and the other one is a module, the shared file skx_common.c gets linked into a module object by kbuild. Therefore, when linking that same file into vmlinux, the '__this_module' symbol used in debugfs isn't defined, leading to the above error. Fix it by moving all debugfs code from skx_common.c to both skx_base.c and i10nm_base.c respectively. Thus, skx_common.c doesn't refer to the '__this_module' symbol anymore. Clarify skx_common.c's purpose at the top of the file for future reference, while at it. [ bp: Make text more readable. ] Fixes: d4dc89d069aa ("EDAC, i10nm: Add a driver for Intel 10nm server processors") Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: James Morse <james.morse@arm.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: linux-edac <linux-edac@vger.kernel.org> Link: https://lkml.kernel.org/r/20190321221339.GA32323@agluck-desk
* EDAC, skx_common: Add code to recognise new compound error codeTony Luck2019-02-061-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | A new error code for systems that use DRAM as an extra level of cache looks like: 000F 0010 1MMM CCCC where the MMM and CCCC bits are used for the same purpose as the original code. For this new class of errors the ADXL translation will provide details of both the DIMM used as cache for the error location and the component that is being cached. Note: This new error code is first supported in Skylake. Older EDAC drivers do not need to be updated. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Aristeu Rozanski <aris@redhat.com> Cc: James Morse <james.morse@arm.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Cc: linux-edac <linux-edac@vger.kernel.org> Link: https://lkml.kernel.org/r/20190205182109.27828-1-tony.luck@intel.com
* EDAC, skx_common: Separate common code out from skx_edacQiuxu Zhuo2019-02-021-0/+689
Parts of skx_edac can be shared with the Intel 10nm server EDAC driver. Carve out the common parts from skx_edac in preparation to support both skx_edac driver and i10nm_edac drivers. Co-developed-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: James Morse <james.morse@arm.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: linux-edac <linux-edac@vger.kernel.org> Link: https://lkml.kernel.org/r/20190130191519.15393-3-tony.luck@intel.com