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[PATCH v6 22/66] target/arm: Use cpu_loop_exit_sigsegv for mte tag looku
From: |
Richard Henderson |
Subject: |
[PATCH v6 22/66] target/arm: Use cpu_loop_exit_sigsegv for mte tag lookup |
Date: |
Sat, 30 Oct 2021 10:15:51 -0700 |
Use the new os interface for raising the exception,
rather than calling arm_cpu_tlb_fill directly.
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/arm/mte_helper.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c
index 724175210b..e09b7e46a2 100644
--- a/target/arm/mte_helper.c
+++ b/target/arm/mte_helper.c
@@ -84,10 +84,8 @@ static uint8_t *allocation_tag_mem(CPUARMState *env, int
ptr_mmu_idx,
uintptr_t index;
if (!(flags & (ptr_access == MMU_DATA_STORE ? PAGE_WRITE_ORG :
PAGE_READ))) {
- /* SIGSEGV */
- arm_cpu_tlb_fill(env_cpu(env), ptr, ptr_size, ptr_access,
- ptr_mmu_idx, false, ra);
- g_assert_not_reached();
+ cpu_loop_exit_sigsegv(env_cpu(env), ptr, ptr_access,
+ !(flags & PAGE_VALID), ra);
}
/* Require both MAP_ANON and PROT_MTE for the page. */
--
2.25.1
- Re: [PATCH v6 38/66] target/sh4: Make sh4_cpu_tlb_fill sysemu only, (continued)
- [PATCH v6 39/66] target/sparc: Make sparc_cpu_tlb_fill sysemu only, Richard Henderson, 2021/10/30
- [PATCH v6 26/66] target/hppa: Make hppa_cpu_tlb_fill sysemu only, Richard Henderson, 2021/10/30
- [PATCH v6 31/66] target/nios2: Implement nios2_cpu_record_sigsegv, Richard Henderson, 2021/10/30
- [PATCH v6 37/66] target/s390x: Implement s390_cpu_record_sigsegv, Richard Henderson, 2021/10/30
- [PATCH v6 15/66] linux-user/host/riscv: Populate host_signal.h, Richard Henderson, 2021/10/30
- [PATCH v6 17/66] linux-user/host/riscv: Improve host_signal_write, Richard Henderson, 2021/10/30
- [PATCH v6 18/66] linux-user/signal: Drop HOST_SIGNAL_PLACEHOLDER, Richard Henderson, 2021/10/30
- [PATCH v6 19/66] hw/core: Add TCGCPUOps.record_sigsegv, Richard Henderson, 2021/10/30
- [PATCH v6 22/66] target/arm: Use cpu_loop_exit_sigsegv for mte tag lookup,
Richard Henderson <=
- [PATCH v6 30/66] target/mips: Make mips_cpu_tlb_fill sysemu only, Richard Henderson, 2021/10/30
- [PATCH v6 32/66] linux-user/openrisc: Abort for EXCP_RANGE, EXCP_FPE, Richard Henderson, 2021/10/30
- [PATCH v6 20/66] linux-user: Add cpu_loop_exit_sigsegv, Richard Henderson, 2021/10/30
- [PATCH v6 23/66] target/arm: Implement arm_cpu_record_sigsegv, Richard Henderson, 2021/10/30
- [PATCH v6 25/66] target/hexagon: Remove hexagon_cpu_tlb_fill, Richard Henderson, 2021/10/30
- [PATCH v6 33/66] target/openrisc: Make openrisc_cpu_tlb_fill sysemu only, Richard Henderson, 2021/10/30
- [PATCH v6 36/66] target/s390x: Use probe_access_flags in s390_probe_access, Richard Henderson, 2021/10/30
- [PATCH v6 41/66] accel/tcg: Restrict TCGCPUOps::tlb_fill() to sysemu, Richard Henderson, 2021/10/30