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X-Received-From: 2a00:1450:4864:20::341 Subject: [Qemu-devel] [RFC PATCH] cputlb: use uint64_t for interim values for unaligned load X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: 1830872@bugs.launchpad.net, qemu-arm@nongnu.org, Paolo Bonzini , =?UTF-8?q?Alex=20Benn=C3=A9e?= , randrianasulu@gmail.com, Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) When running on 32 bit TCG backends a wide unaligned load ends up truncating data before returning to the guest. We specifically have the return type as uint64_t to avoid any premature truncation so we should use the same for the interim types. Hopefully fixes #1830872 Signed-off-by: Alex Benn=C3=A9e Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson Tested-by: Igor Mammedov Tested-by: Laszlo Ersek --- accel/tcg/cputlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c index cdcc3771020..b796ab1cbea 100644 --- a/accel/tcg/cputlb.c +++ b/accel/tcg/cputlb.c @@ -1303,7 +1303,7 @@ load_helper(CPUArchState *env, target_ulong addr, TCG= MemOpIdx oi, && unlikely((addr & ~TARGET_PAGE_MASK) + size - 1 >=3D TARGET_PAGE_SIZE)) { target_ulong addr1, addr2; - tcg_target_ulong r1, r2; + uint64_t r1, r2; unsigned shift; do_unaligned_access: addr1 =3D addr & ~(size - 1); --=20 2.20.1