From: Michael Roth <michael.roth@amd.com>
To: <qemu-devel@nongnu.org>
Cc: <pbonzini@redhat.com>, <armbru@redhat.com>,
<pankaj.gupta@amd.com>, <xiaoyao.li@intel.com>,
<chao.p.peng@linux.intel.com>, <david@kernel.org>,
<berrange@redhat.com>, Peter Xu <peterx@redhat.com>
Subject: [PATCH v7 07/12] hostmem: Rename guest_memfd to guest_memfd_private
Date: Tue, 29 Sep 2026 18:50:13 -0500 [thread overview]
Message-ID: <20260929235109.1398509-8-michael.roth@amd.com> (raw)
In-Reply-To: <20260929235109.1398509-1-michael.roth@amd.com>
From: Peter Xu <peterx@redhat.com>
Rename the HostMemoryBackend.guest_memfd field to reflect what it really
means: whether it needs guest_memfd to back its private guest memory.
This will help avoid conflicts when we introduce supported for using
guest_memfd for shared guest memory via hostmem.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Michael Roth <michael.roth@amd.com>
Reviewed-by: David Hildenbrand <david@kernel.org>
Signed-off-by: Michael Roth <michael.roth@amd.com>
---
backends/hostmem-file.c | 2 +-
backends/hostmem-memfd.c | 2 +-
backends/hostmem-ram.c | 2 +-
backends/hostmem-shm.c | 2 +-
backends/hostmem.c | 2 +-
include/system/hostmem.h | 2 +-
6 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
index bb7323d2bf..7efecf71f5 100644
--- a/backends/hostmem-file.c
+++ b/backends/hostmem-file.c
@@ -86,7 +86,7 @@ file_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
ram_flags |= fb->readonly ? RAM_READONLY_FD : 0;
ram_flags |= fb->rom == ON_OFF_AUTO_ON ? RAM_READONLY : 0;
ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;
- ram_flags |= backend->guest_memfd ? RAM_GUEST_MEMFD_PRIVATE : 0;
+ ram_flags |= backend->guest_memfd_private ? RAM_GUEST_MEMFD_PRIVATE : 0;
ram_flags |= fb->is_pmem ? RAM_PMEM : 0;
ram_flags |= RAM_NAMED_FILE;
return memory_region_init_ram_from_file(&backend->mr, OBJECT(backend), name,
diff --git a/backends/hostmem-memfd.c b/backends/hostmem-memfd.c
index d917a94d73..7a7855aaab 100644
--- a/backends/hostmem-memfd.c
+++ b/backends/hostmem-memfd.c
@@ -60,7 +60,7 @@ have_fd:
backend->aligned = true;
ram_flags = backend->share ? RAM_SHARED : RAM_PRIVATE;
ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;
- ram_flags |= backend->guest_memfd ? RAM_GUEST_MEMFD_PRIVATE : 0;
+ ram_flags |= backend->guest_memfd_private ? RAM_GUEST_MEMFD_PRIVATE : 0;
return memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend), name,
backend->size, ram_flags, fd, 0, errp);
}
diff --git a/backends/hostmem-ram.c b/backends/hostmem-ram.c
index 96ad29112d..6a507fad77 100644
--- a/backends/hostmem-ram.c
+++ b/backends/hostmem-ram.c
@@ -30,7 +30,7 @@ ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
name = host_memory_backend_get_name(backend);
ram_flags = backend->share ? RAM_SHARED : RAM_PRIVATE;
ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;
- ram_flags |= backend->guest_memfd ? RAM_GUEST_MEMFD_PRIVATE : 0;
+ ram_flags |= backend->guest_memfd_private ? RAM_GUEST_MEMFD_PRIVATE : 0;
return memory_region_init_ram_flags_nomigrate(&backend->mr, OBJECT(backend),
name, backend->size,
ram_flags, errp);
diff --git a/backends/hostmem-shm.c b/backends/hostmem-shm.c
index e86fb2e0aa..4766db6aad 100644
--- a/backends/hostmem-shm.c
+++ b/backends/hostmem-shm.c
@@ -54,7 +54,7 @@ have_fd:
/* Let's do the same as memory-backend-ram,share=on would do. */
ram_flags = RAM_SHARED;
ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;
- ram_flags |= backend->guest_memfd ? RAM_GUEST_MEMFD_PRIVATE : 0;
+ ram_flags |= backend->guest_memfd_private ? RAM_GUEST_MEMFD_PRIVATE : 0;
return memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend),
backend_name, backend->size,
diff --git a/backends/hostmem.c b/backends/hostmem.c
index 02846b597d..a41540d50d 100644
--- a/backends/hostmem.c
+++ b/backends/hostmem.c
@@ -290,7 +290,7 @@ static void host_memory_backend_init(Object *obj)
/* TODO: convert access to globals to compat properties */
backend->merge = machine_mem_merge(machine);
backend->dump = machine_dump_guest_core(machine);
- backend->guest_memfd = machine_require_guest_memfd(machine);
+ backend->guest_memfd_private = machine_require_guest_memfd(machine);
backend->reserve = true;
backend->prealloc_threads = machine->smp.cpus;
}
diff --git a/include/system/hostmem.h b/include/system/hostmem.h
index 88fa791ac7..dcbf81aeae 100644
--- a/include/system/hostmem.h
+++ b/include/system/hostmem.h
@@ -76,7 +76,7 @@ struct HostMemoryBackend {
uint64_t size;
bool merge, dump, use_canonical_path;
bool prealloc, is_mapped, share, reserve;
- bool guest_memfd, aligned;
+ bool guest_memfd_private, aligned;
uint32_t prealloc_threads;
ThreadContext *prealloc_context;
DECLARE_BITMAP(host_nodes, MAX_NODES + 1);
--
2.43.0
next prev parent reply other threads:[~2026-09-29 23:56 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-29 23:50 [PATCH v7 00/12] KVM/hostmem: Support init-shared guest-memfd as VM backends Michael Roth
2026-09-29 23:50 ` [PATCH v7 01/12] kvm: Decouple memory attribute check from kvm_guest_memfd_supported Michael Roth
2026-09-29 23:50 ` [PATCH v7 02/12] kvm: Detect guest-memfd flags supported Michael Roth
2026-09-29 23:50 ` [PATCH v7 03/12] kvm: Provide explicit error for kvm_create_guest_memfd() Michael Roth
2026-09-29 23:50 ` [PATCH v7 04/12] ramblock: Rename guest_memfd to guest_memfd_private Michael Roth
2026-09-29 23:50 ` [PATCH v7 05/12] memory: Rename RAM_GUEST_MEMFD to RAM_GUEST_MEMFD_PRIVATE Michael Roth
2026-09-29 23:50 ` [PATCH v7 06/12] memory: Rename memory_region_has_guest_memfd() to *_private() Michael Roth
2026-09-29 23:50 ` Michael Roth [this message]
2026-09-29 23:50 ` [PATCH v7 08/12] machine: Rename machine_require_guest_memfd() " Michael Roth
2026-09-29 23:50 ` [PATCH v7 09/12] memory: Rename memory_region_init_ram_guest_memfd() " Michael Roth
2026-09-29 23:50 ` [PATCH v7 10/12] hostmem: Support fully shared guest memfd to back a VM Michael Roth
2026-09-30 5:13 ` Markus Armbruster
2026-09-30 15:10 ` Peter Xu
2026-09-29 23:50 ` [PATCH v7 11/12] tests/migration-test: Support guest-memfd init shared mem type Michael Roth
2026-09-29 23:50 ` [PATCH v7 12/12] tests/migration-test: Add a precopy test for guest-memfd Michael Roth
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260929235109.1398509-8-michael.roth@amd.com \
--to=michael.roth@amd.com \
--cc=armbru@redhat.com \
--cc=berrange@redhat.com \
--cc=chao.p.peng@linux.intel.com \
--cc=david@kernel.org \
--cc=pankaj.gupta@amd.com \
--cc=pbonzini@redhat.com \
--cc=peterx@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=xiaoyao.li@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.