diff options
| author | Alex Bennée <alex.bennee@linaro.org> | 2014-08-04 14:41:56 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-08-04 14:41:56 +0100 |
| commit | dbb1fb277ca12acd577403575aa6a2f119ab79ea (patch) | |
| tree | f38c52a60d3aaa144d81b913596c246301117709 /target-arm | |
| parent | dcd82c118c891571d2d7db5b4ec84d9cf3ea49b3 (diff) | |
target-arm: A64: fix TLB flush instructions
According to the ARM ARM we weren't correctly flushing the TLB entries
where bits 63:56 didn't match bit 55 of the virtual address. This
exposed a problem when we switched QEMU's internal TARGET_PAGE_BITS to
12 for aarch64.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1406733627-24255-3-git-send-email-alex.bennee@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/helper.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index 35c11e7800..f630d96306 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -1801,12 +1801,17 @@ static CPAccessResult aa64_cacheop_access(CPUARMState *env, return CP_ACCESS_OK; } +/* See: D4.7.2 TLB maintenance requirements and the TLB maintenance instructions + * Page D4-1736 (DDI0487A.b) + */ + static void tlbi_aa64_va_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) { /* Invalidate by VA (AArch64 version) */ ARMCPU *cpu = arm_env_get_cpu(env); - uint64_t pageaddr = value << 12; + uint64_t pageaddr = sextract64(value << 12, 0, 56); + tlb_flush_page(CPU(cpu), pageaddr); } @@ -1815,7 +1820,8 @@ static void tlbi_aa64_vaa_write(CPUARMState *env, const ARMCPRegInfo *ri, { /* Invalidate by VA, all ASIDs (AArch64 version) */ ARMCPU *cpu = arm_env_get_cpu(env); - uint64_t pageaddr = value << 12; + uint64_t pageaddr = sextract64(value << 12, 0, 56); + tlb_flush_page(CPU(cpu), pageaddr); } |