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Re: [Qemu-devel] [PATCH V5 0/9] nvdimm: guarantee persistence of QEMU wr
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH V5 0/9] nvdimm: guarantee persistence of QEMU writes to persistent memory |
Date: |
Thu, 31 May 2018 14:18:58 +0100 |
User-agent: |
Mutt/1.9.5 (2018-04-13) |
David Gilbert previously suggested a memory access interface. I guess
it would look something like this:
typedef struct {
void (*memset)(void *s, int c, size_t n);
void (*memcpy)(void *dest, const void *src, size_t n);
} MemoryOperations;
That way code doesn't need if (pmem) A else B. It can just do
mem_ops->foo(). Have you looked into this idea?
Also, there was a discussion about leaving the code unchanged but adding
an nvdimm_flush() call at the very end of migration. I think someone
benchmarked it but can't find the email. Please post a link or
summarize the results, because that approach would be much less
invasive. Thanks!
Stefan
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- [Qemu-devel] [PATCH 4/9 V5] mem/nvdimm: ensure write persistence to PMEM in label emulation, (continued)
- [Qemu-devel] [PATCH 4/9 V5] mem/nvdimm: ensure write persistence to PMEM in label emulation, junyan . he, 2018/05/09
- [Qemu-devel] [PATCH 5/9 V5] migration/ram: ensure write persistence on loading zero pages to PMEM, junyan . he, 2018/05/09
- [Qemu-devel] [PATCH 6/9 V5] migration/ram: ensure write persistence on loading normal pages to PMEM, junyan . he, 2018/05/09
- [Qemu-devel] [PATCH 7/9 V5] migration/ram: ensure write persistence on loading compressed pages to PMEM, junyan . he, 2018/05/09
- [Qemu-devel] [PATCH 8/9 V5] migration/ram: ensure write persistence on loading xbzrle pages to PMEM, junyan . he, 2018/05/09
- [Qemu-devel] [PATCH 9/9 V5] migration/ram: Add check and info message to nvdimm post copy., junyan . he, 2018/05/09
- Re: [Qemu-devel] [PATCH V5 0/9] nvdimm: guarantee persistence of QEMU writes to persistent memory, He, Junyan, 2018/05/09
- Re: [Qemu-devel] [PATCH V5 0/9] nvdimm: guarantee persistence of QEMU writes to persistent memory, no-reply, 2018/05/10
- Re: [Qemu-devel] [PATCH V5 0/9] nvdimm: guarantee persistence of QEMU writes to persistent memory, Junyan He, 2018/05/20
- Re: [Qemu-devel] [PATCH V5 0/9] nvdimm: guarantee persistence of QEMU writes to persistent memory,
Stefan Hajnoczi <=