From: Michael Roth <michael.roth@amd.com>
To: <qemu-devel@nongnu.org>
Cc: <pbonzini@redhat.com>, <berrange@redhat.com>, <armbru@redhat.com>,
<pankaj.gupta@amd.com>, <isaku.yamahata@intel.com>,
<xiaoyao.li@intel.com>, <chao.p.peng@linux.intel.com>,
<david@kernel.org>, Peter Xu <peterx@redhat.com>
Subject: [PATCH v5 09/12] machine: Rename machine_require_guest_memfd() to *_private()
Date: Tue, 8 Sep 2026 08:30:59 -0500 [thread overview]
Message-ID: <20260908133151.836685-10-michael.roth@amd.com> (raw)
In-Reply-To: <20260908133151.836685-1-michael.roth@amd.com>
From: Peter Xu <peterx@redhat.com>
Differenciate it from fully shared guest-memfd use cases.
When at it, add proper brackets in kvm_handle_hc_map_gpa_range() otherwise
checkpatch may complain.
Suggested-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
---
backends/hostmem.c | 2 +-
hw/core/machine.c | 2 +-
hw/i386/pc.c | 2 +-
hw/i386/pc_sysfw.c | 4 ++--
hw/i386/x86-common.c | 4 ++--
include/hw/core/boards.h | 2 +-
target/i386/kvm/kvm.c | 3 ++-
7 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/backends/hostmem.c b/backends/hostmem.c
index d54d9091c3..0cc5adcd38 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_private = machine_require_guest_memfd(machine);
+ backend->guest_memfd_private = machine_require_guest_memfd_private(machine);
backend->reserve = true;
backend->prealloc_threads = machine->smp.cpus;
}
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 8939ae1666..469033d6b3 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -1337,7 +1337,7 @@ bool machine_mem_merge(MachineState *machine)
return machine->mem_merge;
}
-bool machine_require_guest_memfd(MachineState *machine)
+bool machine_require_guest_memfd_private(MachineState *machine)
{
return machine->cgs && machine->cgs->require_guest_memfd;
}
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index e9e4fc262b..9c2d77e494 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -873,7 +873,7 @@ void pc_memory_init(PCMachineState *pcms,
if (!is_tdx_vm()) {
option_rom_mr = g_malloc(sizeof(*option_rom_mr));
- if (machine_require_guest_memfd(machine)) {
+ if (machine_require_guest_memfd_private(machine)) {
memory_region_init_ram_guest_memfd(option_rom_mr, NULL, "pc.rom",
PC_ROM_SIZE, &error_fatal);
} else {
diff --git a/hw/i386/pc_sysfw.c b/hw/i386/pc_sysfw.c
index 1a41a5972b..4a7694c131 100644
--- a/hw/i386/pc_sysfw.c
+++ b/hw/i386/pc_sysfw.c
@@ -51,7 +51,7 @@ static void pc_isa_bios_init(PCMachineState *pcms, MemoryRegion *isa_bios,
/* map the last 128KB of the BIOS in ISA space */
isa_bios_size = MIN(flash_size, 128 * KiB);
- if (machine_require_guest_memfd(MACHINE(pcms))) {
+ if (machine_require_guest_memfd_private(MACHINE(pcms))) {
memory_region_init_ram_guest_memfd(isa_bios, NULL, "isa-bios",
isa_bios_size, &error_fatal);
} else {
@@ -70,7 +70,7 @@ static void pc_isa_bios_init(PCMachineState *pcms, MemoryRegion *isa_bios,
((uint8_t*)flash_ptr) + (flash_size - isa_bios_size),
isa_bios_size);
- if (!machine_require_guest_memfd(current_machine)) {
+ if (!machine_require_guest_memfd_private(current_machine)) {
memory_region_set_readonly(isa_bios, true);
}
}
diff --git a/hw/i386/x86-common.c b/hw/i386/x86-common.c
index 8f9419e7d3..dd526c561c 100644
--- a/hw/i386/x86-common.c
+++ b/hw/i386/x86-common.c
@@ -1036,7 +1036,7 @@ static void load_bios_from_file(X86MachineState *x86ms, const char *bios_name,
ssize_t ret;
/* BIOS load */
- if (machine_require_guest_memfd(MACHINE(x86ms))) {
+ if (machine_require_guest_memfd_private(MACHINE(x86ms))) {
memory_region_init_ram_guest_memfd(&x86ms->bios, NULL, "pc.bios",
bios_size, &error_fatal);
if (is_tdx_vm()) {
@@ -1106,7 +1106,7 @@ void x86_bios_rom_init(X86MachineState *x86ms, const char *default_firmware,
bios_size = get_bios_size(x86ms, bios_name, filename);
load_bios_from_file(x86ms, bios_name, filename, bios_size, isapc_ram_fw);
- if (!machine_require_guest_memfd(MACHINE(x86ms))) {
+ if (!machine_require_guest_memfd_private(MACHINE(x86ms))) {
/* map the last 128KB of the BIOS in ISA space */
x86_isa_bios_init(&x86ms->isa_bios, rom_memory, &x86ms->bios,
!isapc_ram_fw);
diff --git a/include/hw/core/boards.h b/include/hw/core/boards.h
index a436d48c8e..7925f0451a 100644
--- a/include/hw/core/boards.h
+++ b/include/hw/core/boards.h
@@ -43,7 +43,7 @@ bool machine_usb(MachineState *machine);
int machine_phandle_start(MachineState *machine);
bool machine_dump_guest_core(MachineState *machine);
bool machine_mem_merge(MachineState *machine);
-bool machine_require_guest_memfd(MachineState *machine);
+bool machine_require_guest_memfd_private(MachineState *machine);
HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine);
void machine_set_cpu_numa_node(MachineState *machine,
const CpuInstanceProperties *props,
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index 1eeadb99ad..a72b6e6b74 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -6488,8 +6488,9 @@ static int kvm_handle_hc_map_gpa_range(X86CPU *cpu, struct kvm_run *run)
uint64_t gpa, size, attributes;
int ret;
- if (!machine_require_guest_memfd(current_machine))
+ if (!machine_require_guest_memfd_private(current_machine)) {
return -EINVAL;
+ }
gpa = run->hypercall.args[0];
size = run->hypercall.args[1] * TARGET_PAGE_SIZE;
--
2.43.0
next prev parent reply other threads:[~2026-09-08 13:38 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-08 13:30 [PATCH v5 00/12] KVM/hostmem: Support init-shared guest-memfd as VM backends Michael Roth
2026-09-08 13:30 ` [PATCH v5 01/12] kvm: Decouple memory attribute check from kvm_guest_memfd_supported Michael Roth
2026-09-10 8:47 ` David Hildenbrand
2026-09-08 13:30 ` [PATCH v5 02/12] kvm: Detect guest-memfd flags supported Michael Roth
2026-09-08 13:30 ` [PATCH v5 03/12] kvm: Provide explicit error for kvm_create_guest_memfd() Michael Roth
2026-09-10 8:48 ` David Hildenbrand
2026-09-08 13:30 ` [PATCH v5 04/12] ramblock: Rename guest_memfd to guest_memfd_private Michael Roth
2026-09-10 8:49 ` David Hildenbrand
2026-09-08 13:30 ` [PATCH v5 05/12] memory: Rename RAM_GUEST_MEMFD to RAM_GUEST_MEMFD_PRIVATE Michael Roth
2026-09-10 8:50 ` David Hildenbrand
2026-09-08 13:30 ` [PATCH v5 06/12] memory: Rename memory_region_has_guest_memfd() to *_private() Michael Roth
2026-09-10 8:50 ` David Hildenbrand
2026-09-08 13:30 ` [PATCH v5 07/12] hostmem: Rename guest_memfd to guest_memfd_private Michael Roth
2026-09-10 8:51 ` David Hildenbrand
2026-09-08 13:30 ` [PATCH v5 08/12] hostmem: Support fully shared guest memfd to back a VM Michael Roth
2026-09-08 14:03 ` Markus Armbruster
2026-09-10 22:58 ` Michael Roth
2026-09-11 5:56 ` Markus Armbruster
2026-09-11 19:22 ` Michael Roth
2026-09-10 8:54 ` David Hildenbrand
2026-09-10 23:00 ` Michael Roth
2026-09-11 12:06 ` Peter Xu
2026-09-11 16:00 ` David Hildenbrand (Arm)
2026-09-14 12:59 ` Peter Xu
2026-09-15 15:02 ` David Hildenbrand (Arm)
2026-09-08 13:30 ` Michael Roth [this message]
2026-09-10 8:55 ` [PATCH v5 09/12] machine: Rename machine_require_guest_memfd() to *_private() David Hildenbrand
2026-09-10 23:08 ` Michael Roth
2026-09-11 10:48 ` David Hildenbrand (Arm)
2026-09-11 19:27 ` Michael Roth
2026-09-08 13:31 ` [PATCH v5 10/12] memory: Rename memory_region_init_ram_guest_memfd() " Michael Roth
2026-09-10 8:56 ` David Hildenbrand
2026-09-08 13:31 ` [PATCH v5 11/12] tests/migration-test: Support guest-memfd init shared mem type Michael Roth
2026-09-08 13:31 ` [PATCH v5 12/12] tests/migration-test: Add a precopy test for guest-memfd Michael Roth
2026-09-10 8:45 ` [PATCH v5 00/12] KVM/hostmem: Support init-shared guest-memfd as VM backends David Hildenbrand
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