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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [UNIKRAFT/LIBTLSF PATCH v2] Initial port of TLSF to Unikraft
Hi Razvan, Are you sure that TLSF doesn't select the ifmalloc interface? Looking at the patch, we have: > +++ b/Config.uk > @@ -0,0 +1,20 @@ > +menuconfig LIBTLSF > + bool "TLSF - real-time dynamic memory allocator" > + select LIBUKALLOC_IFMALLOC > + default n > + So in theory ifmalloc should always be auto selected with TLSF. Thanks a lot for the review! Hugo On Fri, Sep 18, 2020 at 12:58:31PM +0300, Razvan Deaconescu wrote: > Hi, Hugo. > > It works, I tested on KVM and linuxu. > > I only have the comment I made for libtinyalloc: > --- > When selecting tinyalloc in the configuration screen, the malloc > compatibility interface should also be automatically selected. It's not > obvious it has to be selected and one may miss it. > --- > > Other than that, all good. > > Razvan > > Hugo Lefeuvre <hugo.lefeuvre@xxxxxxxxx> writes: > > Signed-off-by: Hugo Lefeuvre <hugo.lefeuvre@xxxxxxxxx> > > --- > > Config.uk | 20 +++ > > Makefile.uk | 77 ++++++++++ > > README.md | 12 ++ > > glue.c | 77 ++++++++++ > > include/uk/tlsf.h | 48 +++++++ > > main-tree.patch | 42 ++++++ > > ...onfig-vars-and-parametrize-tlsf-interface.patch | 160 > > +++++++++++++++++++++ > > 7 files changed, 436 insertions(+) > > create mode 100644 Config.uk > > create mode 100644 Makefile.uk > > create mode 100644 README.md > > create mode 100644 glue.c > > create mode 100644 include/uk/tlsf.h > > create mode 100644 main-tree.patch > > create mode 100644 patches/config-vars-and-parametrize-tlsf-interface.patch > > > > diff --git a/Config.uk b/Config.uk > > new file mode 100644 > > index 0000000..29732d0 > > --- /dev/null > > +++ b/Config.uk > > @@ -0,0 +1,20 @@ > > +menuconfig LIBTLSF > > + bool "TLSF - real-time dynamic memory allocator" > > + select LIBUKALLOC_IFMALLOC > > + default n > > + > > +if LIBTLSF > > + config TLSF_LOG2_SLI > > + int "log2 of second level index (SLI)" > > + default 5 > > + help > > + The Second Level Index subdivides linearily the first > > level lists. > > + > > + The SLI has to be a power of two and is here > > represented as log2 > > + of the number of second level divisions. > > + > > + For instance, TLSF_LOG2_SLI = 5 implies 32 second level > > divisions. > > + > > + Higher values of SLI imply less fragmentation, at the > > cost of an > > + increased space overhead of metadata. > > +endif > > diff --git a/Makefile.uk b/Makefile.uk > > new file mode 100644 > > index 0000000..373181e > > --- /dev/null > > +++ b/Makefile.uk > > @@ -0,0 +1,77 @@ > > +# libtlsf Makefile.uk > > +# > > +# Authors: Hugo Lefeuvre <hugo.lefeuvre@xxxxxxxxx> > > +# > > +# > > +# Copyright (c) 2020, NEC Europe Ltd., NEC Corporation. All rights > > reserved. > > +# > > +# Redistribution and use in source and binary forms, with or without > > +# modification, are permitted provided that the following conditions > > +# are met: > > +# > > +# 1. Redistributions of source code must retain the above copyright > > +# notice, this list of conditions and the following disclaimer. > > +# 2. Redistributions in binary form must reproduce the above copyright > > +# notice, this list of conditions and the following disclaimer in the > > +# documentation and/or other materials provided with the distribution. > > +# 3. Neither the name of the copyright holder nor the names of its > > +# contributors may be used to endorse or promote products derived from > > +# this software without specific prior written permission. > > +# > > +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS > > IS" > > +# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, > > THE > > +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR > > PURPOSE > > +# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS > > BE > > +# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR > > +# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF > > +# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS > > +# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN > > +# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) > > +# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF > > THE > > +# POSSIBILITY OF SUCH DAMAGE. > > + > > +################################################################################ > > +# Library registration > > +################################################################################ > > +$(eval $(call addlib_s,libtlsf,$(CONFIG_LIBTLSF))) > > + > > +################################################################################ > > +# Sources > > +################################################################################ > > +LIBTLSF_VERSION=2.4.6 > > +LIBTLSF_URL=http://wks.gii.upv.es/tlsf/files/src/TLSF-$(LIBTLSF_VERSION).tbz2 > > +LIBTLSF_DIR=TLSF-$(LIBTLSF_VERSION) > > + > > +LIBTLSF_PATCHDIR=$(LIBTLSF_BASE)/patches > > +$(eval $(call fetch,libtlsf,$(LIBTLSF_URL),TLSF-$(LIBTLSF_VERSION).tbz2)) > > +$(eval $(call patch,libtlsf,$(LIBTLSF_PATCHDIR),$(LIBTLSF_DIR))) > > + > > +################################################################################ > > +# Helpers > > +################################################################################ > > +LIBTLSF=$(LIBTLSF_ORIGIN)/$(LIBTLSF_DIR) > > + > > +################################################################################ > > +# Library includes > > +################################################################################ > > + > > +CINCLUDES-$(CONFIG_LIBTLSF) += -I$(LIBTLSF_BASE) \ > > + -I$(LIBTLSF_BASE)/include \ > > + -I$(LIBTLSF)/src > > + > > +################################################################################ > > +# Global flags > > +################################################################################ > > + > > +# no locks, no sbrk, no mmap > > +CFLAGS-$(CONFIG_LIBTLSF) += -DTLSF_USE_LOCKS=0 -DUSE_MMAP=0 -DUSE_SBRK=0 > > + > > +################################################################################ > > +# Glue code > > +################################################################################ > > +LIBTLSF_SRCS-y += $(LIBTLSF_BASE)/glue.c > > + > > +################################################################################ > > +# Sources > > +################################################################################ > > +LIBTLSF_SRCS-y += $(LIBTLSF)/src/tlsf.c > > diff --git a/README.md b/README.md > > new file mode 100644 > > index 0000000..2e665a3 > > --- /dev/null > > +++ b/README.md > > @@ -0,0 +1,12 @@ > > +TLSF for Unikraft > > +================= > > + > > +This is the port of the TLSF [0] general-purpose memory allocator for > > Unikraft > > +as an external library. > > + > > +How to use this allocator in your unikernel application: > > + > > +- apply main-tree.patch to the main tree > > +- select "TLSF" in `ukboot > Default memory allocator` > > + > > +[0] http://www.gii.upv.es/tlsf/ > > diff --git a/glue.c b/glue.c > > new file mode 100644 > > index 0000000..8becfe9 > > --- /dev/null > > +++ b/glue.c > > @@ -0,0 +1,77 @@ > > +/* SPDX-License-Identifier: BSD-3-Clause */ > > +/* > > + * Authors: Hugo Lefeuvre <hugo.lefeuvre@xxxxxxxxx> > > + * > > + * Copyright (c) 2020, NEC Europe Ltd., NEC Corporation. All rights > > reserved. > > + * > > + * Redistribution and use in source and binary forms, with or without > > + * modification, are permitted provided that the following conditions > > + * are met: > > + * > > + * 1. Redistributions of source code must retain the above copyright > > + * notice, this list of conditions and the following disclaimer. > > + * 2. Redistributions in binary form must reproduce the above copyright > > + * notice, this list of conditions and the following disclaimer in the > > + * documentation and/or other materials provided with the distribution. > > + * 3. Neither the name of the copyright holder nor the names of its > > + * contributors may be used to endorse or promote products derived from > > + * this software without specific prior written permission. > > + * > > + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS > > IS" > > + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, > > THE > > + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR > > PURPOSE > > + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS > > BE > > + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR > > + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF > > + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS > > + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN > > + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) > > + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF > > THE > > + * POSSIBILITY OF SUCH DAMAGE. > > + */ > > + > > +#include <uk/tlsf.h> > > +#include <uk/alloc_impl.h> > > +#include <tlsf.h> > > + > > +/* malloc interface */ > > + > > +static void *uk_tlsf_malloc(struct uk_alloc *a, size_t size) > > +{ > > + return tlsf_malloc(size, (void *)((uintptr_t) a + > > + sizeof(struct uk_alloc))); > > +} > > + > > +static void uk_tlsf_free(struct uk_alloc *a, void *ptr) > > +{ > > + tlsf_free(ptr, (void *)((uintptr_t) a + sizeof(struct uk_alloc))); > > +} > > + > > +/* initialization */ > > + > > +struct uk_alloc *uk_tlsf_init(void *base, size_t len) > > +{ > > + struct uk_alloc *a; > > + size_t res; > > + > > + /* enough space for allocator available? */ > > + if (sizeof(*a) > len) { > > + uk_pr_err("Not enough space for allocator: %" __PRIsz > > + " B required but only %" __PRIuptr" B usable\n", > > + sizeof(*a), len); > > + return NULL; > > + } > > + > > + /* store allocator metadata on the heap, just before the memory pool */ > > + a = (struct uk_alloc *)base; > > + uk_pr_info("Initialize tlsf allocator @ 0x%" __PRIuptr ", len %" > > + __PRIsz"\n", (uintptr_t)a, len); > > + > > + res = init_memory_pool(len - sizeof(*a), base + sizeof(*a)); > > + if (res == (size_t)-1) > > + return NULL; > > + > > + uk_alloc_init_malloc_ifmalloc(a, uk_tlsf_malloc, uk_tlsf_free, NULL); > > + > > + return a; > > +} > > diff --git a/include/uk/tlsf.h b/include/uk/tlsf.h > > new file mode 100644 > > index 0000000..3e3482a > > --- /dev/null > > +++ b/include/uk/tlsf.h > > @@ -0,0 +1,48 @@ > > +/* SPDX-License-Identifier: BSD-3-Clause */ > > +/* > > + * Authors: Hugo Lefeuvre <hugo.lefeuvre@xxxxxxxxx> > > + * > > + * Copyright (c) 2020, NEC Europe Ltd., NEC Corporation. All rights > > reserved. > > + * > > + * Redistribution and use in source and binary forms, with or without > > + * modification, are permitted provided that the following conditions > > + * are met: > > + * > > + * 1. Redistributions of source code must retain the above copyright > > + * notice, this list of conditions and the following disclaimer. > > + * 2. Redistributions in binary form must reproduce the above copyright > > + * notice, this list of conditions and the following disclaimer in the > > + * documentation and/or other materials provided with the distribution. > > + * 3. Neither the name of the copyright holder nor the names of its > > + * contributors may be used to endorse or promote products derived from > > + * this software without specific prior written permission. > > + * > > + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS > > IS" > > + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, > > THE > > + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR > > PURPOSE > > + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS > > BE > > + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR > > + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF > > + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS > > + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN > > + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) > > + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF > > THE > > + * POSSIBILITY OF SUCH DAMAGE. > > + */ > > + > > +#ifndef __LIBTLSF_H__ > > +#define __LIBTLSF_H__ > > + > > +#include <uk/alloc.h> > > + > > +#ifdef __cplusplus > > +extern "C" { > > +#endif > > + > > +struct uk_alloc *uk_tlsf_init(void *base, size_t len); > > + > > +#ifdef __cplusplus > > +} > > +#endif > > + > > +#endif /* __LIBTLSF_H__ */ > > diff --git a/main-tree.patch b/main-tree.patch > > new file mode 100644 > > index 0000000..ca66278 > > --- /dev/null > > +++ b/main-tree.patch > > @@ -0,0 +1,42 @@ > > +From: Hugo Lefeuvre <hugo.lefeuvre@xxxxxxxxx> > > +Subject: Add TLSF entry to the menuconfig and initialize it > > +diff --git a/lib/ukboot/Config.uk b/lib/ukboot/Config.uk > > +index a888bc1c..b79b370e 100644 > > +--- a/lib/ukboot/Config.uk > > ++++ b/lib/ukboot/Config.uk > > +@@ -32,6 +32,13 @@ if LIBUKBOOT > > + Satisfy allocation as fast as possible. No support for free(). > > + Refer to help in ukallocregion for more information. > > + > > ++ config LIBUKBOOT_INITTLSF > > ++ bool "TLSF" > > ++ select LIBTLSF > > ++ help > > ++ Real-time allocator. Bounded fragmentation, allocation, and > > ++ deallocation. > > ++ > > + config LIBUKBOOT_NOALLOC > > + bool "No memory allocator" > > + > > +diff --git a/lib/ukboot/boot.c b/lib/ukboot/boot.c > > +index 4e749aa5..37aafd70 100644 > > +--- a/lib/ukboot/boot.c > > ++++ b/lib/ukboot/boot.c > > +@@ -45,6 +45,8 @@ > > + #include <uk/allocbbuddy.h> > > + #elif CONFIG_LIBUKBOOT_INITREGION > > + #include <uk/allocregion.h> > > ++#elif CONFIG_LIBUKBOOT_INITTLSF > > ++#include <uk/tlsf.h> > > + #endif > > + #if CONFIG_LIBUKSCHED > > + #include <uk/sched.h> > > +@@ -233,6 +235,8 @@ void ukplat_entry(int argc, char *argv[]) > > + a = uk_allocbbuddy_init(md.base, md.len); > > + #elif CONFIG_LIBUKBOOT_INITREGION > > + a = uk_allocregion_init(md.base, md.len); > > ++#elif CONFIG_LIBUKBOOT_INITTLSF > > ++ a = uk_tlsf_init(md.base, md.len); > > + #endif > > + } else { > > + uk_alloc_addmem(a, md.base, md.len); > > diff --git a/patches/config-vars-and-parametrize-tlsf-interface.patch > > b/patches/config-vars-and-parametrize-tlsf-interface.patch > > new file mode 100644 > > index 0000000..e77cf56 > > --- /dev/null > > +++ b/patches/config-vars-and-parametrize-tlsf-interface.patch > > @@ -0,0 +1,160 @@ > > +From: Hugo Lefeuvre <hugo.lefeuvre@xxxxxxxxx> > > +Subject: Adapt TLSF interface to Unikraft > > + - expose MAX_LOG2_SLI, users might want to modify this > > + - do not rely on static metadata; pass it as argument to the allocation > > + interface > > +diff -urNp TLSF-2.4.6/src/tlsf.c TLSF-patched/src/tlsf.c > > +--- TLSF-2.4.6/src/tlsf.c 2009-10-06 11:25:15.000000000 +0200 > > ++++ TLSF-patched/src/tlsf.c 2020-06-26 13:49:03.231027270 +0200 > > +@@ -74,7 +74,6 @@ > > + #define USE_SBRK (0) > > + #endif > > + > > +- > > + #if TLSF_USE_LOCKS > > + #include "target.h" > > + #else > > +@@ -129,7 +128,7 @@ > > + #define BLOCK_ALIGN (sizeof(void *) * 2) > > + > > + #define MAX_FLI (30) > > +-#define MAX_LOG2_SLI (5) > > ++#define MAX_LOG2_SLI CONFIG_TLSF_LOG2_SLI > > + #define MAX_SLI (1 << MAX_LOG2_SLI) /* MAX_SLI = > > 2^MAX_LOG2_SLI */ > > + > > + #define FLI_OFFSET (6) /* tlsf structure just will manage > > blocks bigger */ > > +@@ -451,8 +450,6 @@ static __inline__ bhdr_t *process_area(v > > + /******************** Begin of the allocator code *****************/ > > + /******************************************************************/ > > + > > +-static char *mp = NULL; /* Default memory pool. */ > > +- > > + /******************************************************************/ > > + size_t init_memory_pool(size_t mem_pool_size, void *mem_pool) > > + { > > +@@ -472,13 +469,10 @@ size_t init_memory_pool(size_t mem_pool_ > > + tlsf = (tlsf_t *) mem_pool; > > + /* Check if already initialised */ > > + if (tlsf->tlsf_signature == TLSF_SIGNATURE) { > > +- mp = mem_pool; > > +- b = GET_NEXT_BLOCK(mp, ROUNDUP_SIZE(sizeof(tlsf_t))); > > ++ b = GET_NEXT_BLOCK(mem_pool, ROUNDUP_SIZE(sizeof(tlsf_t))); > > + return b->size & BLOCK_SIZE; > > + } > > + > > +- mp = mem_pool; > > +- > > + /* Zeroing the memory pool */ > > + memset(mem_pool, 0, sizeof(tlsf_t)); > > + > > +@@ -615,13 +609,13 @@ void destroy_memory_pool(void *mem_pool) > > + > > + > > + /******************************************************************/ > > +-void *tlsf_malloc(size_t size) > > ++void *tlsf_malloc(size_t size, void *mem_pool) > > + { > > + /******************************************************************/ > > + void *ret; > > + > > + #if USE_MMAP || USE_SBRK > > +- if (!mp) { > > ++ if (!mem_pool) { > > + size_t area_size; > > + void *area; > > + > > +@@ -634,60 +628,60 @@ void *tlsf_malloc(size_t size) > > + } > > + #endif > > + > > +- TLSF_ACQUIRE_LOCK(&((tlsf_t *)mp)->lock); > > ++ TLSF_ACQUIRE_LOCK(&((tlsf_t *)mem_pool)->lock); > > + > > +- ret = malloc_ex(size, mp); > > ++ ret = malloc_ex(size, mem_pool); > > + > > +- TLSF_RELEASE_LOCK(&((tlsf_t *)mp)->lock); > > ++ TLSF_RELEASE_LOCK(&((tlsf_t *)mem_pool)->lock); > > + > > + return ret; > > + } > > + > > + /******************************************************************/ > > +-void tlsf_free(void *ptr) > > ++void tlsf_free(void *ptr, void *mem_pool) > > + { > > + /******************************************************************/ > > + > > +- TLSF_ACQUIRE_LOCK(&((tlsf_t *)mp)->lock); > > ++ TLSF_ACQUIRE_LOCK(&((tlsf_t *)mem_pool)->lock); > > + > > +- free_ex(ptr, mp); > > ++ free_ex(ptr, mem_pool); > > + > > +- TLSF_RELEASE_LOCK(&((tlsf_t *)mp)->lock); > > ++ TLSF_RELEASE_LOCK(&((tlsf_t *)mem_pool)->lock); > > + > > + } > > + > > + /******************************************************************/ > > +-void *tlsf_realloc(void *ptr, size_t size) > > ++void *tlsf_realloc(void *ptr, size_t size, void *mem_pool) > > + { > > + /******************************************************************/ > > + void *ret; > > + > > + #if USE_MMAP || USE_SBRK > > +- if (!mp) { > > +- return tlsf_malloc(size); > > ++ if (!mem_pool) { > > ++ return tlsf_malloc(size, mem_pool); > > + } > > + #endif > > + > > +- TLSF_ACQUIRE_LOCK(&((tlsf_t *)mp)->lock); > > ++ TLSF_ACQUIRE_LOCK(&((tlsf_t *)mem_pool)->lock); > > + > > +- ret = realloc_ex(ptr, size, mp); > > ++ ret = realloc_ex(ptr, size, mem_pool); > > + > > +- TLSF_RELEASE_LOCK(&((tlsf_t *)mp)->lock); > > ++ TLSF_RELEASE_LOCK(&((tlsf_t *)mem_pool)->lock); > > + > > + return ret; > > + } > > + > > + /******************************************************************/ > > +-void *tlsf_calloc(size_t nelem, size_t elem_size) > > ++void *tlsf_calloc(size_t nelem, size_t elem_size, void *mem_pool) > > + { > > + /******************************************************************/ > > + void *ret; > > + > > +- TLSF_ACQUIRE_LOCK(&((tlsf_t *)mp)->lock); > > ++ TLSF_ACQUIRE_LOCK(&((tlsf_t *)mem_pool)->lock); > > + > > +- ret = calloc_ex(nelem, elem_size, mp); > > ++ ret = calloc_ex(nelem, elem_size, mem_pool); > > + > > +- TLSF_RELEASE_LOCK(&((tlsf_t *)mp)->lock); > > ++ TLSF_RELEASE_LOCK(&((tlsf_t *)mem_pool)->lock); > > + > > + return ret; > > + } > > +diff -urNp TLSF-2.4.6/src/tlsf.h TLSF-patched/src/tlsf.h > > +--- TLSF-2.4.6/src/tlsf.h 2009-10-06 11:25:22.000000000 +0200 > > ++++ TLSF-patched/src/tlsf.h 2020-06-26 09:24:01.159699745 +0200 > > +@@ -31,9 +31,9 @@ extern void free_ex(void *, void *); > > + extern void *realloc_ex(void *, size_t, void *); > > + extern void *calloc_ex(size_t, size_t, void *); > > + > > +-extern void *tlsf_malloc(size_t size); > > +-extern void tlsf_free(void *ptr); > > +-extern void *tlsf_realloc(void *ptr, size_t size); > > +-extern void *tlsf_calloc(size_t nelem, size_t elem_size); > > ++extern void *tlsf_malloc(size_t size, void *); > > ++extern void tlsf_free(void *ptr, void *); > > ++extern void *tlsf_realloc(void *ptr, size_t size, void *); > > ++extern void *tlsf_calloc(size_t nelem, size_t elem_size, void *); > > + > > + #endif > -- Hugo Lefeuvre (hle) | www.owl.eu.com RSA4096_ 360B 03B3 BF27 4F4D 7A3F D5E8 14AA 1EB8 A247 3DFD ed25519_ 37B2 6D38 0B25 B8A2 6B9F 3A65 A36F 5357 5F2D DC4C Attachment:
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