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spapr-tce: make sPAPRTCETable a proper device

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Model TCE tables as a device that's hooked up as a child object to
the owner.  Besides the code cleanup, we get a few nice benefits:

1) free actually works now (it was dead code before)

2) the TCE information is visible in the device tree

3) we can expose table information as properties such that if we
   change the window_size, we can use globals to keep migration
   working.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-id: 1374175984-8930-6-git-send-email-aliguori@us.ibm.com
[dwg: pseries: savevm support for PAPR TCE tables]
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
[alexey: ppc kvm: fix to compile]
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Anthony Liguori 2013-07-18 14:32:58 -05:00
parent db1b58e937
commit a83000f5e3
6 changed files with 117 additions and 63 deletions
Download patch file Download diff file Expand all files Collapse all files

4
target-ppc/kvm.c
View file

@ -1626,7 +1626,7 @@ void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t window_size, int *pfd)
return NULL;
}
len = (window_size / SPAPR_TCE_PAGE_SIZE) * sizeof(sPAPRTCE);
len = (window_size / SPAPR_TCE_PAGE_SIZE) * sizeof(uint64_t);
/* FIXME: round this up to page size */
table = mmap(NULL, len, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
@ -1649,7 +1649,7 @@ int kvmppc_remove_spapr_tce(void *table, int fd, uint32_t window_size)
return -1;
}
len = (window_size / SPAPR_TCE_PAGE_SIZE)*sizeof(sPAPRTCE);
len = (window_size / SPAPR_TCE_PAGE_SIZE)*sizeof(uint64_t);
if ((munmap(table, len) < 0) ||
(close(fd) < 0)) {
fprintf(stderr, "KVM: Unexpected error removing TCE table: %s",