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1 files changed, 0 insertions, 45 deletions

diff --git a/gitlab/issues/target_arm/host_missing/accel_missing/970.toml b/gitlab/issues/target_arm/host_missing/accel_missing/970.toml
deleted file mode 100644
index e9eafec99..000000000
--- a/gitlab/issues/target_arm/host_missing/accel_missing/970.toml
+++ /dev/null
@@ -1,45 +0,0 @@
-id = 970
-title = "ARM SCTLR allows writes to \"write ignore\" bits"
-state = "opened"
-created_at = "2022-04-08T10:02:27.346Z"
-closed_at = "n/a"
-labels = ["target: arm"]
-url = "https://gitlab.com/qemu-project/qemu/-/issues/970"
-host-os = "Windows 11"
-host-arch = "x64"
-qemu-version = "5.0.1"
-guest-os = "arm firmware"
-guest-arch = "firmware compiled for arm cortex-a5 (qemu set to cortex-a9)"
-description = """The firmware I have executed in qemu sets up pagetables and then enables the MMU.
-A few instructions later, a prefetch abort was occurring. After debugging it turned out the problem was because get_phys_addr_v5 was being used to walk the pagetable instead of get_phys_addr_v6.
-qemu has this code:
-```c
-regime_sctlr(env, mmu_idx) & SCTLR_XP
-// where SCTLR_XP is commented as
-#define SCTLR_XP      (1U << 23) /* up to v6; v7 onward RAO */
-```
-Somewhat interestingly, A5 has a lot of bits marked as `/WI`: https://developer.arm.com/documentation/ddi0433/c/system-control/register-descriptions/system-control-register
-
-A9 has less, but still a few which qemu is not handling: https://developer.arm.com/documentation/ddi0388/e/the-system-control-coprocessors/summary-of-system-control-coprocessor-registers/system-control-register
-I've made this hacky patch to fix it for myself:
-```diff
-diff --git a/qemu/target/arm/helper.c b/qemu/target/arm/helper.c
-index 60c9db9e..d8fd5a7d 100644
---- a/qemu/target/arm/helper.c
-+++ b/qemu/target/arm/helper.c
-@@ -4306,6 +4306,11 @@ static void sctlr_write(CPUARMState *env, const ARMCPRegInfo *ri,
- {
-     ARMCPU *cpu = env_archcpu(env);
-
-+    // for cortex-a5 specifically
-+    value |= (0b11 << 22) | (1 << 18) | (1 << 16) | (0b1111 << 3);
-+    value &= ~((1 << 31) | (0b11 << 26) | (1 << 24) | (0b111 << 19) |
-+        (1 << 17) | (0b11 << 14) | (0b111 << 7));
-+
-     if (raw_read(env, ri) == value) {
-         /* Skip the TLB flush if nothing actually changed; Linux likes
-          * to do a lot of pointless SCTLR writes.
-```
-I think the real fix would allow expressing the ones/zeros mask as part of `ARMCPU` per-arch."""
-reproduce = "n/a"
-additional = "n/a"