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[PATCH v5 04/19] accel/tcg: Adjust probe_access call to page_check_range
From: |
Richard Henderson |
Subject: |
[PATCH v5 04/19] accel/tcg: Adjust probe_access call to page_check_range |
Date: |
Fri, 8 May 2020 08:43:44 -0700 |
We have validated that addr+size does not cross a page boundary.
Therefore we need to validate exactly one page. We can achieve
that passing any value 1 <= x <= size to page_check_range.
Passing 1 will simplify the next patch.
Signed-off-by: Richard Henderson <address@hidden>
---
accel/tcg/user-exec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 4be78eb9b3..03538e2a38 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -211,7 +211,7 @@ void *probe_access(CPUArchState *env, target_ulong addr,
int size,
g_assert_not_reached();
}
- if (!guest_addr_valid(addr) || page_check_range(addr, size, flags) < 0) {
+ if (!guest_addr_valid(addr) || page_check_range(addr, 1, flags) < 0) {
CPUState *cpu = env_cpu(env);
CPUClass *cc = CPU_GET_CLASS(cpu);
cc->tlb_fill(cpu, addr, size, access_type, MMU_USER_IDX, false,
--
2.20.1
- [PATCH v5 00/19] target/arm: sve load/store improvements, Richard Henderson, 2020/05/08
- [PATCH v5 05/19] accel/tcg: Add probe_access_flags, Richard Henderson, 2020/05/08
- [PATCH v5 07/19] target/arm: Use cpu_*_data_ra for sve_ldst_tlb_fn, Richard Henderson, 2020/05/08
- [PATCH v5 08/19] target/arm: Drop manual handling of set/clear_helper_retaddr, Richard Henderson, 2020/05/08
- [PATCH v5 11/19] target/arm: Use SVEContLdSt in sve_ld1_r, Richard Henderson, 2020/05/08
- [PATCH v5 06/19] accel/tcg: Add endian-specific cpu_{ld, st}* operations, Richard Henderson, 2020/05/08
- [PATCH v5 09/19] target/arm: Add sve infrastructure for page lookup, Richard Henderson, 2020/05/08
- [PATCH v5 12/19] target/arm: Handle watchpoints in sve_ld1_r, Richard Henderson, 2020/05/08