> On 15 Oct 2025, at 4:53 PM, Gerd Hoffmann <[email protected]> wrote: > > Keep a linked list of the memory regions created by igvm. > > Signed-off-by: Gerd Hoffmann <[email protected]> Reviewed-by: Ani Sinha <[email protected]> > --- > backends/igvm.c | 20 ++++++++++++++------ > 1 file changed, 14 insertions(+), 6 deletions(-) > > diff --git a/backends/igvm.c b/backends/igvm.c > index ee5ee74c7a66..1690fb334bf5 100644 > --- a/backends/igvm.c > +++ b/backends/igvm.c > @@ -28,6 +28,11 @@ typedef struct QIgvmParameterData { > uint32_t index; > } QIgvmParameterData; > > +typedef struct QIgvmMemoryRegion { > + QTAILQ_ENTRY(QIgvmMemoryRegion) next; > + MemoryRegion mr; > +} QIgvmMemoryRegion; > + > /* > * Some directives are specific to particular confidential computing > platforms. > * Define required types for each of those platforms here. > @@ -73,6 +78,7 @@ typedef struct QIgvm { > uint32_t compatibility_mask; > unsigned current_header_index; > QTAILQ_HEAD(, QIgvmParameterData) parameter_data; > + QTAILQ_HEAD(, QIgvmMemoryRegion) memory_regions; > IgvmPlatformType platform_type; > > /* > @@ -185,7 +191,7 @@ static void *qigvm_prepare_memory(QIgvm *ctx, uint64_t > addr, uint64_t size, > int region_identifier, Error **errp) > { > ERRP_GUARD(); > - MemoryRegion *igvm_pages = NULL; > + QIgvmMemoryRegion *pages = NULL; > Int128 gpa_region_size; > MemoryRegionSection mrs = > memory_region_find(get_system_memory(), addr, size); > @@ -219,20 +225,21 @@ static void *qigvm_prepare_memory(QIgvm *ctx, uint64_t > addr, uint64_t size, > */ > g_autofree char *region_name = > g_strdup_printf("igvm.%X", region_identifier); > - igvm_pages = g_new0(MemoryRegion, 1); > + pages = g_new0(QIgvmMemoryRegion, 1); > if (ctx->cgs && ctx->cgs->require_guest_memfd) { > - if (!memory_region_init_ram_guest_memfd(igvm_pages, NULL, > + if (!memory_region_init_ram_guest_memfd(&pages->mr, NULL, > region_name, size, errp)) > { > return NULL; > } > } else { > - if (!memory_region_init_ram(igvm_pages, NULL, region_name, size, > + if (!memory_region_init_ram(&pages->mr, NULL, region_name, size, > errp)) { > return NULL; > } > } > - memory_region_add_subregion(get_system_memory(), addr, igvm_pages); > - return memory_region_get_ram_ptr(igvm_pages); > + memory_region_add_subregion(get_system_memory(), addr, &pages->mr); > + QTAILQ_INSERT_TAIL(&ctx->memory_regions, pages, next); > + return memory_region_get_ram_ptr(&pages->mr); > } > } > > @@ -928,6 +935,7 @@ int qigvm_process_file(IgvmCfg *cfg, > ConfidentialGuestSupport *cgs, > } > > QTAILQ_INIT(&ctx.parameter_data); > + QTAILQ_INIT(&ctx.memory_regions); > > for (ctx.current_header_index = 0; > ctx.current_header_index < (unsigned)header_count; > -- > 2.51.0 >
