Hi Linus, please pull from: +AKA- git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm libnvdimm-fixes ...to receive one straggling fix for NVDIMM support. The KVM/QEMU enabling for NVDIMMs has recently reached the point where it is able to accept some ACPI +AF8-DSM requests from a guest VM. +AKA-However they immediately found that the 4.5-rc kernel is unusable because the kernel's 'nfit' driver fails to load upon seeing a valid +ACI-not supported+ACI- response from the virtual BIOS for an address range scrub command. It is not mandatory that a platform implement address range scrubbing, so this fix from Vishal properly treats the +ACI-not supported+ACI- response as +ACI-skip scrubbing and continue loading the driver+ACI-. The following changes since commit fc77dbd34c5c99bce46d40a2491937c3bcbd10af: +AKA- Linux 4.5-rc6 (2016-02-28 08:41:20 -0800) are available in the git repository at: +AKA- git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm libnvdimm-fixes for you to fetch changes up to 6e2452dff4441e3dc24d415c8b2cda8a3ba52116: +AKA- nfit: Continue init even if ARS commands are unimplemented (2016-03-04 16:46:13 -0800) ---------------------------------------------------------------- Vishal Verma (1): +AKAAoACgAKAAoACg-nfit: Continue init even if ARS commands are unimplemented +AKA-drivers/acpi/nfit.c +AHw- 15 +-+-+-+-+-+-+-+-+-+-+----- +AKA-1 file changed, 11 insertions(+-), 4 deletions(-) commit 6e2452dff4441e3dc24d415c8b2cda8a3ba52116 Author: Vishal Verma +ADw-vishal.l.verma+AEA-intel.com+AD4- Date:+AKAAoACg-Thu Mar 3 15:39:41 2016 -0700 +AKAAoACgAKA-nfit: Continue init even if ARS commands are unimplemented +AKAAoACgAKA- +AKAAoACgAKA-If firmware doesn't implement any of the ARS commands, take that to +AKAAoACgAKA-mean that ARS is unsupported, and continue to initialize regions without +AKAAoACgAKA-bad block lists. We cannot make the assumption that ARS commands will be +AKAAoACgAKA-unconditionally supported on all NVDIMMs. +AKAAoACgAKA- +AKAAoACgAKA-Reported-by: Haozhong Zhang +ADw-haozhong.zhang+AEA-intel.com+AD4- +AKAAoACgAKA-Signed-off-by: Vishal Verma +ADw-vishal.l.verma+AEA-intel.com+AD4- +AKAAoACgAKA-Acked-by: Xiao Guangrong +ADw-guangrong.xiao+AEA-linux.intel.com+AD4- +AKAAoACgAKA-Tested-by: Haozhong Zhang +ADw-haozhong.zhang+AEA-intel.com+AD4- +AKAAoACgAKA-Signed-off-by: Dan Williams +ADw-dan.j.williams+AEA-intel.com+AD4- diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index fb53db187854..35947ac87644 100644 --- a/drivers/acpi/nfit.c +-+-+- b/drivers/acpi/nfit.c +AEAAQA- -1590,14 +-1590,21 +AEAAQA- static int acpi+AF8-nfit+AF8-find+AF8-poison(struct acpi+AF8-nfit+AF8-desc +ACo-acpi+AF8-desc, +AKA- start +AD0- ndr+AF8-desc-+AD4-res-+AD4-start+ADs- +AKA- len +AD0- ndr+AF8-desc-+AD4-res-+AD4-end - ndr+AF8-desc-+AD4-res-+AD4-start +- 1+ADs- +AKA- +- /+ACo- +- +AKAAKg- If ARS is unimplemented, unsupported, or if the 'Persistent Memory +- +AKAAKg- Scrub' flag in extended status is not set, skip this but continue +- +AKAAKg- initialization +- +AKAAKg-/ +AKA- rc +AD0- ars+AF8-get+AF8-cap(nd+AF8-desc, ars+AF8-cap, start, len)+ADs- +- if (rc +AD0APQ- -ENOTTY) +AHs- +- dev+AF8-dbg(acpi+AF8-desc-+AD4-dev, +- +ACI-Address Range Scrub is not implemented, won't create an error list+AFw-n+ACI-)+ADs- +- rc +AD0- 0+ADs- +- goto out+ADs- +- +AH0- +AKA- if (rc) +AKA- goto out+ADs- +AKA- - /+ACo- - +AKAAKg- If ARS is unsupported, or if the 'Persistent Memory Scrub' flag in - +AKAAKg- extended status is not set, skip this but continue initialization - +AKAAKg-/ +AKA- if ((ars+AF8-cap-+AD4-status +ACY- 0xffff) +AHwAfA- +AKA- +ACE-(ars+AF8-cap-+AD4-status +AD4APg- 16 +ACY- ND+AF8-ARS+AF8-PERSISTENT)) +AHs- +AKA- dev+AF8-warn(acpi+AF8-desc-+AD4-dev,-- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
