Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1286863 > unrolled thread
| Started by | Dan Williams <dan.j.williams@intel.com> |
|---|---|
| First post | 2015-12-08 22:40 +0100 |
| Last post | 2015-12-08 23:10 +0100 |
| Articles | 2 — 2 participants |
Back to article view | Back to linux.kernel
This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by
below is the oldest one visible, not the original post.
Re: [PATCH 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks Dan Williams <dan.j.williams@intel.com> - 2015-12-08 22:40 +0100
RE: [PATCH 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks "Luck, Tony" <tony.luck@intel.com> - 2015-12-08 23:10 +0100
| From | Dan Williams <dan.j.williams@intel.com> |
|---|---|
| Date | 2015-12-08 22:40 +0100 |
| Subject | Re: [PATCH 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks |
| Message-ID | <qDy9k-7FQ-11@gated-at.bofh.it> |
[ adding nvdimm folks ] On Fri, Nov 27, 2015 at 2:16 AM, Ingo Molnar <mingo@kernel.org> wrote: > > * Luck, Tony <tony.luck@intel.com> wrote: > >> On Thu, Nov 12, 2015 at 08:53:13AM +0100, Ingo Molnar wrote: >> > > +extern phys_addr_t mcsafe_memcpy(void *dst, const void __user *src, >> > > + unsigned size); >> > >> > So what's the longer term purpose, where will mcsafe_memcpy() be used? >> >> The initial plan is to use this for file systems backed by NVDIMMs. They will >> have a large amount of memory, and we have a practical recovery path - return >> -EIO just like legacy h/w. >> >> We can look for other places in the kernel where we read large amounts of memory >> and have some idea how to recover if the memory turns out to be bad. > > I see, that's sensible! > > Thanks, > > Ingo Is that an "Acked-by"? I'd like to pull this plus Vishal's gendisk-badblocks patches into a unified libnvdimm-error-handling branch. We're looking to have v4.5 able to avoid or survive nvdimm media errors through the pmem driver and DAX paths. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[toc] | [next] | [standalone]
| From | "Luck, Tony" <tony.luck@intel.com> |
|---|---|
| Date | 2015-12-08 23:10 +0100 |
| Message-ID | <qDyCl-85p-5@gated-at.bofh.it> |
| In reply to | #1286863 |
PiBJcyB0aGF0IGFuICJBY2tlZC1ieSI/ICBJJ2QgbGlrZSB0byBwdWxsIHRoaXMgcGx1cyBWaXNo YWwncw0KPiBnZW5kaXNrLWJhZGJsb2NrcyBwYXRjaGVzIGludG8gYSB1bmlmaWVkIGxpYm52ZGlt bS1lcnJvci1oYW5kbGluZw0KPiBicmFuY2guICBXZSdyZSBsb29raW5nIHRvIGhhdmUgdjQuNSBh YmxlIHRvIGF2b2lkIG9yIHN1cnZpdmUgbnZkaW1tDQo+IG1lZGlhIGVycm9ycyB0aHJvdWdoIHRo ZSBwbWVtIGRyaXZlciBhbmQgREFYIHBhdGhzLg0KDQpJJ20gbWFraW5nIGEgVjIgdGhhdCBmaXhl cyBzb21lIGJ1aWxkIGVycm9ycyBmb3IgMzItYml0IGFuZCBhZGRyZXNzZXMgb3RoZXIgY29tbWVu dGFyeQ0KZnJvbSB0aGUgY29tbXVuaXR5LiBQZXJoYXBzIGEgY291cGxlIG1vcmUgZGF5cyBiZWZv cmUgSSBmaW5pc2ggaXQgdXAgcmVhZHkgdG8gcG9zdC4NCg0KLVRvbnkNCg== -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[toc] | [prev] | [standalone]
Back to top | Article view | linux.kernel
csiph-web