From 533eb415df2ed9449b5d01def6274a5312b4ddaf Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Wed, 19 Feb 2020 11:08:43 -0500 Subject: arm/aspeed: actually check RAM size MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It's supposed that SOC will check if "-m" provided RAM size is valid by setting "ram-size" property and then board would read back valid (possibly corrected value) to map RAM MemoryReging with valid size. It isn't doing so, since check is called only indirectly from aspeed_sdmc_reset()->asc->compute_conf() or much later when guest writes to configuration register. So depending on "-m" value QEMU end-ups with a warning and an invalid MemoryRegion size allocated and mapped. (examples: -M ast2500-evb -m 1M 0000000080000000-000000017ffffffe (prio 0, i/o): aspeed-ram-container 0000000080000000-00000000800fffff (prio 0, ram): ram 0000000080100000-00000000bfffffff (prio 0, i/o): max_ram -M ast2500-evb -m 3G 0000000080000000-000000017ffffffe (prio 0, i/o): aspeed-ram-container 0000000080000000-000000013fffffff (prio 0, ram): ram [DETECTED OVERFLOW!] 0000000140000000-00000000bfffffff (prio 0, i/o): max_ram ) On top of that sdmc falls back and reports to guest "default" size, it thinks machine should have. This patch makes ram-size check actually work and changes behavior from a warning later on during machine reset to error_fatal at the moment SOC.ram-size is set so user will have to fix RAM size on CLI to start machine. It also gets out of the way mutable ram-size logic, so we could consolidate RAM allocation logic around pre-allocated hostmem backend (supplied by user or auto created by generic machine code depending on supplied -m/mem-path/mem-prealloc options. Signed-off-by: Igor Mammedov Reviewed-by: Cédric Le Goater Reviewed-by: Richard Henderson Message-Id: <20200219160953.13771-10-imammedo@redhat.com> --- include/hw/misc/aspeed_sdmc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/hw/misc/aspeed_sdmc.h') diff --git a/include/hw/misc/aspeed_sdmc.h b/include/hw/misc/aspeed_sdmc.h index 5dbde59fe7..cea1e67fe3 100644 --- a/include/hw/misc/aspeed_sdmc.h +++ b/include/hw/misc/aspeed_sdmc.h @@ -40,6 +40,7 @@ typedef struct AspeedSDMCClass { SysBusDeviceClass parent_class; uint64_t max_ram_size; + const uint64_t *valid_ram_sizes; uint32_t (*compute_conf)(AspeedSDMCState *s, uint32_t data); void (*write)(AspeedSDMCState *s, uint32_t reg, uint32_t data); } AspeedSDMCClass; -- cgit 1.4.1