From: Steve Sistare <steven.sistare@oracle.com>
To: qemu-devel@nongnu.org
Cc: Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>,
David Hildenbrand <david@redhat.com>,
Igor Mammedov <imammedo@redhat.com>,
Eduardo Habkost <eduardo@habkost.net>,
Marcel Apfelbaum <marcel.apfelbaum@gmail.com>,
Philippe Mathieu-Daude <philmd@linaro.org>,
Paolo Bonzini <pbonzini@redhat.com>,
"Daniel P. Berrange" <berrange@redhat.com>,
Markus Armbruster <armbru@redhat.com>,
Steve Sistare <steven.sistare@oracle.com>
Subject: [PATCH V1 15/26] physmem: hoist host memory allocation
Date: Mon, 29 Apr 2024 08:55:24 -0700 [thread overview]
Message-ID: <1714406135-451286-16-git-send-email-steven.sistare@oracle.com> (raw)
In-Reply-To: <1714406135-451286-1-git-send-email-steven.sistare@oracle.com>
Hoist host memory allocation from ram_block_add.
No functional change.
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
---
system/physmem.c | 80 +++++++++++++++++++++++++-------------------------------
1 file changed, 36 insertions(+), 44 deletions(-)
diff --git a/system/physmem.c b/system/physmem.c
index ffcf012..b57462d 100644
--- a/system/physmem.c
+++ b/system/physmem.c
@@ -1825,44 +1825,40 @@ static void ram_block_destroy_guest_memfd(RAMBlock *rb)
}
}
-static void ram_block_add(RAMBlock *new_block, Error **errp)
+static void *ram_block_alloc_host(RAMBlock *rb, Error **errp)
+{
+ struct MemoryRegion *mr = rb->mr;
+ uint8_t *host = NULL;
+
+ if (xen_enabled()) {
+ xen_ram_alloc(rb->offset, rb->max_length, mr, errp);
+
+ } else {
+ host = qemu_anon_ram_alloc(rb->max_length, &mr->align,
+ qemu_ram_is_shared(rb),
+ qemu_ram_is_noreserve(rb));
+ if (!host) {
+ error_setg_errno(errp, errno, "cannot set up guest memory '%s'",
+ rb->idstr);
+ }
+ }
+
+ if (host) {
+ memory_try_enable_merging(host, rb->max_length);
+ }
+ return host;
+}
+
+static void ram_block_add(RAMBlock *new_block)
{
- const bool noreserve = qemu_ram_is_noreserve(new_block);
- const bool shared = qemu_ram_is_shared(new_block);
RAMBlock *block;
RAMBlock *last_block = NULL;
ram_addr_t old_ram_size, new_ram_size;
- Error *err = NULL;
-
old_ram_size = last_ram_page();
qemu_mutex_lock_ramlist();
new_block->offset = find_ram_offset(new_block->max_length);
- if (!new_block->host) {
- if (xen_enabled()) {
- xen_ram_alloc(new_block->offset, new_block->max_length,
- new_block->mr, &err);
- if (err) {
- error_propagate(errp, err);
- qemu_mutex_unlock_ramlist();
- return;
- }
- } else {
- new_block->host = qemu_anon_ram_alloc(new_block->max_length,
- &new_block->mr->align,
- shared, noreserve);
- if (!new_block->host) {
- error_setg_errno(errp, errno,
- "cannot set up guest memory '%s'",
- memory_region_name(new_block->mr));
- qemu_mutex_unlock_ramlist();
- return;
- }
- memory_try_enable_merging(new_block->host, new_block->max_length);
- }
- }
-
new_ram_size = MAX(old_ram_size,
(new_block->offset + new_block->max_length) >> TARGET_PAGE_BITS);
if (new_ram_size > old_ram_size) {
@@ -1948,7 +1944,6 @@ RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr,
{
void *host;
RAMBlock *new_block;
- Error *local_err = NULL;
int64_t file_size, file_align;
/* Just support these ram flags by now. */
@@ -1999,12 +1994,7 @@ RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr,
}
new_block->host = host;
- ram_block_add(new_block, &local_err);
- if (local_err) {
- g_free(new_block);
- error_propagate(errp, local_err);
- return NULL;
- }
+ ram_block_add(new_block);
return new_block;
}
@@ -2066,7 +2056,6 @@ RAMBlock *qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size,
MemoryRegion *mr, Error **errp)
{
RAMBlock *new_block;
- Error *local_err = NULL;
int align;
assert((ram_flags & ~(RAM_SHARED | RAM_RESIZEABLE | RAM_PREALLOC |
@@ -2084,14 +2073,17 @@ RAMBlock *qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size,
}
new_block->resized = resized;
- new_block->host = host;
- ram_block_add(new_block, &local_err);
- if (local_err) {
- ram_block_destroy_guest_memfd(new_block);
- g_free(new_block);
- error_propagate(errp, local_err);
- return NULL;
+ if (!host) {
+ host = ram_block_alloc_host(new_block, errp);
+ if (!host) {
+ ram_block_destroy_guest_memfd(new_block);
+ g_free(new_block);
+ return NULL;
+ }
}
+
+ new_block->host = host;
+ ram_block_add(new_block);
return new_block;
}
--
1.8.3.1
next prev parent reply other threads:[~2024-04-29 16:03 UTC|newest]
Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-29 15:55 [PATCH V1 00/26] Live update: cpr-exec Steve Sistare
2024-04-29 15:55 ` [PATCH V1 01/26] oslib: qemu_clear_cloexec Steve Sistare
2024-05-06 23:27 ` Fabiano Rosas
2024-05-07 8:56 ` Daniel P. Berrangé
2024-05-07 13:54 ` Fabiano Rosas
2024-04-29 15:55 ` [PATCH V1 02/26] vl: helper to request re-exec Steve Sistare
2024-04-29 15:55 ` [PATCH V1 03/26] migration: SAVEVM_FOREACH Steve Sistare
2024-05-06 23:17 ` Fabiano Rosas
2024-05-13 19:27 ` Steven Sistare
2024-05-27 18:14 ` Peter Xu
2024-04-29 15:55 ` [PATCH V1 04/26] migration: delete unused parameter mis Steve Sistare
2024-05-06 21:50 ` Fabiano Rosas
2024-05-27 18:02 ` Peter Xu
2024-04-29 15:55 ` [PATCH V1 05/26] migration: precreate vmstate Steve Sistare
2024-05-07 21:02 ` Fabiano Rosas
2024-05-13 19:28 ` Steven Sistare
2024-05-24 13:56 ` Fabiano Rosas
2024-05-27 18:16 ` Peter Xu
2024-05-28 15:09 ` Steven Sistare via
2024-05-29 18:39 ` Peter Xu
2024-05-30 17:04 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 06/26] migration: precreate vmstate for exec Steve Sistare
2024-05-06 23:34 ` Fabiano Rosas
2024-05-13 19:28 ` Steven Sistare
2024-05-13 21:21 ` Fabiano Rosas
2024-04-29 15:55 ` [PATCH V1 07/26] migration: VMStateId Steve Sistare
2024-05-07 21:03 ` Fabiano Rosas
2024-05-27 18:20 ` Peter Xu
2024-05-28 15:10 ` Steven Sistare via
2024-05-28 17:44 ` Peter Xu
2024-05-29 17:30 ` Steven Sistare via
2024-05-29 18:53 ` Peter Xu
2024-05-30 17:11 ` Steven Sistare via
2024-05-30 18:03 ` Peter Xu
2024-04-29 15:55 ` [PATCH V1 08/26] migration: vmstate_info_void_ptr Steve Sistare
2024-05-07 21:33 ` Fabiano Rosas
2024-05-27 18:31 ` Peter Xu
2024-05-28 15:10 ` Steven Sistare via
2024-05-28 18:21 ` Peter Xu
2024-05-29 17:30 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 09/26] migration: vmstate_register_named Steve Sistare
2024-05-09 14:19 ` Fabiano Rosas
2024-05-09 14:32 ` Fabiano Rosas
2024-05-13 19:29 ` Steven Sistare
2024-04-29 15:55 ` [PATCH V1 10/26] migration: vmstate_unregister_named Steve Sistare
2024-04-29 15:55 ` [PATCH V1 11/26] migration: vmstate_register at init time Steve Sistare
2024-04-29 15:55 ` [PATCH V1 12/26] migration: vmstate factory object Steve Sistare
2024-04-29 15:55 ` [PATCH V1 13/26] physmem: ram_block_create Steve Sistare
2024-05-13 18:37 ` Fabiano Rosas
2024-05-13 19:30 ` Steven Sistare
2024-04-29 15:55 ` [PATCH V1 14/26] physmem: hoist guest_memfd creation Steve Sistare
2024-04-29 15:55 ` Steve Sistare [this message]
2024-04-29 15:55 ` [PATCH V1 16/26] physmem: set ram block idstr earlier Steve Sistare
2024-04-29 15:55 ` [PATCH V1 17/26] machine: memfd-alloc option Steve Sistare
2024-05-28 21:12 ` Peter Xu
2024-05-29 17:31 ` Steven Sistare via
2024-05-29 19:14 ` Peter Xu
2024-05-30 17:11 ` Steven Sistare via
2024-05-30 18:14 ` Peter Xu
2024-05-31 19:32 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 18/26] migration: cpr-exec-args parameter Steve Sistare
2024-05-02 12:23 ` Markus Armbruster
2024-05-02 16:00 ` Steven Sistare
2024-05-21 8:13 ` Daniel P. Berrangé
2024-04-29 15:55 ` [PATCH V1 19/26] physmem: preserve ram blocks for cpr Steve Sistare
2024-05-28 21:44 ` Peter Xu
2024-05-29 17:31 ` Steven Sistare via
2024-05-29 19:25 ` Peter Xu
2024-05-30 17:12 ` Steven Sistare via
2024-05-30 18:39 ` Peter Xu
2024-05-31 19:32 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 20/26] migration: cpr-exec mode Steve Sistare
2024-05-02 12:23 ` Markus Armbruster
2024-05-02 16:00 ` Steven Sistare
2024-05-03 6:26 ` Markus Armbruster
2024-05-21 8:20 ` Daniel P. Berrangé
2024-05-24 14:58 ` Fabiano Rosas
2024-05-27 18:54 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 21/26] migration: migrate_add_blocker_mode Steve Sistare
2024-05-09 17:47 ` Fabiano Rosas
2024-04-29 15:55 ` [PATCH V1 22/26] migration: ram block cpr-exec blockers Steve Sistare
2024-05-09 18:01 ` Fabiano Rosas
2024-05-13 19:29 ` Steven Sistare
2024-04-29 15:55 ` [PATCH V1 23/26] migration: misc " Steve Sistare
2024-05-09 18:05 ` Fabiano Rosas
2024-05-24 12:40 ` Fabiano Rosas
2024-05-27 19:02 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 24/26] seccomp: cpr-exec blocker Steve Sistare
2024-05-09 18:16 ` Fabiano Rosas
2024-05-10 7:54 ` Daniel P. Berrangé
2024-05-13 19:29 ` Steven Sistare
2024-05-21 7:14 ` Daniel P. Berrangé
2024-04-29 15:55 ` [PATCH V1 25/26] migration: fix mismatched GPAs during cpr-exec Steve Sistare
2024-05-09 18:39 ` Fabiano Rosas
2024-04-29 15:55 ` [PATCH V1 26/26] migration: only-migratable-modes Steve Sistare
2024-05-09 19:14 ` Fabiano Rosas
2024-05-13 19:48 ` Steven Sistare
2024-05-13 21:57 ` Fabiano Rosas
2024-05-21 8:05 ` Daniel P. Berrangé
2024-05-02 16:13 ` cpr-exec doc (was Re: [PATCH V1 00/26] Live update: cpr-exec) Steven Sistare
2024-05-02 18:15 ` Peter Xu
2024-05-20 18:30 ` [PATCH V1 00/26] Live update: cpr-exec Steven Sistare
2024-05-20 22:28 ` Fabiano Rosas
2024-05-21 2:31 ` Peter Xu
2024-05-21 11:46 ` Steven Sistare
2024-05-27 17:45 ` Peter Xu
2024-05-28 15:10 ` Steven Sistare via
2024-05-28 16:42 ` Peter Xu
2024-05-30 17:17 ` Steven Sistare via
2024-05-30 19:23 ` Peter Xu
2024-05-24 13:02 ` Fabiano Rosas
2024-05-24 14:07 ` Steven Sistare
2024-05-27 18:07 ` Peter Xu
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