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openSUSE:Leap:15.6:Update
xen.26659
libxc-sr-restore-types.patch
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File libxc-sr-restore-types.patch of Package xen.26659
From: Olaf Hering <olaf@aepfle.de> Date: Fri, 23 Oct 2020 14:39:31 +0200 Subject: libxc sr restore types tools/guest: restore: move types array Remove allocation from hotpath, move types array into preallocated space. Signed-off-by: Olaf Hering <olaf@aepfle.de> --- tools/libxc/xc_sr_common.h | 1 + tools/libxc/xc_sr_restore.c | 12 +----------- 2 files changed, 2 insertions(+), 11 deletions(-) --- xen-4.14.0-testing.orig/tools/libxc/xc_sr_common.h +++ xen-4.14.0-testing/tools/libxc/xc_sr_common.h @@ -227,6 +227,7 @@ struct xc_sr_save_arrays { struct xc_sr_restore_arrays { /* handle_page_data */ xen_pfn_t pfns[MAX_BATCH_SIZE]; + uint32_t types[MAX_BATCH_SIZE]; }; struct xc_sr_context --- xen-4.14.0-testing.orig/tools/libxc/xc_sr_restore.c +++ xen-4.14.0-testing/tools/libxc/xc_sr_restore.c @@ -316,7 +316,7 @@ static int handle_page_data(struct xc_sr int rc = -1; xen_pfn_t *pfns = ctx->restore.m->pfns, pfn; - uint32_t *types = NULL, type; + uint32_t *types = ctx->restore.m->types, type; /* * v2 compatibility only exists for x86 streams. This is a bit of a @@ -363,14 +363,6 @@ static int handle_page_data(struct xc_sr goto err; } - types = malloc(pages->count * sizeof(*types)); - if ( !types ) - { - ERROR("Unable to allocate enough memory for %u pfns", - pages->count); - goto err; - } - for ( i = 0; i < pages->count; ++i ) { pfn = pages->pfn[i] & PAGE_DATA_PFN_MASK; @@ -410,8 +402,6 @@ static int handle_page_data(struct xc_sr rc = process_page_data(ctx, pages->count, pfns, types, &pages->pfn[pages->count]); err: - free(types); - return rc; }
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