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[Qemu-devel] [PATCH v2 4/6] pflash_cfi01: memory region should be set to
From: |
Jordan Justen |
Subject: |
[Qemu-devel] [PATCH v2 4/6] pflash_cfi01: memory region should be set to enable readonly mode |
Date: |
Tue, 30 Apr 2013 23:56:31 -0700 |
This causes any writes to the memory region to trap to the
device handler.
This is also important for KVM, because this allows the memory
region to be set using KVM_MEM_READONLY, which allows the memory
region to be read & executed. (Without this, KVM will not support
executing from the memory region.)
Signed-off-by: Jordan Justen <address@hidden>
---
hw/block/pflash_cfi01.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
index 3ff20e0..b65225e 100644
--- a/hw/block/pflash_cfi01.c
+++ b/hw/block/pflash_cfi01.c
@@ -596,6 +596,8 @@ static int pflash_cfi01_init(SysBusDevice *dev)
}
}
+ memory_region_set_readonly(&pfl->mem, true);
+
if (pfl->bs) {
pfl->ro = bdrv_is_read_only(pfl->bs);
} else {
--
1.7.10.4
- [Qemu-devel] [PATCH v2 0/6] KVM flash memory support, Jordan Justen, 2013/05/01
- [Qemu-devel] [PATCH v2 1/6] kvm: add kvm_readonly_mem_enabled, Jordan Justen, 2013/05/01
- [Qemu-devel] [PATCH v2 4/6] pflash_cfi01: memory region should be set to enable readonly mode,
Jordan Justen <=
- [Qemu-devel] [PATCH v2 2/6] kvm: support using KVM_MEM_READONLY flag for readonly regions, Jordan Justen, 2013/05/01
- [Qemu-devel] [PATCH v2 6/6] pc_sysfw: change rom_only default to 0, Jordan Justen, 2013/05/01
- [Qemu-devel] [PATCH v2 3/6] kvm: workaround a possible KVM bug when using KVM_MEM_READONLY, Jordan Justen, 2013/05/01
- [Qemu-devel] [PATCH v2 5/6] pc_sysfw: allow flash (-pflash) memory to be used with KVM, Jordan Justen, 2013/05/01