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([2602:ae:1598:4c01:1cd:ec7a:a720:ce9a]) by smtp.gmail.com with ESMTPSA id h13-20020a170902f7cd00b001aadd0d7364sm151797plw.83.2023.05.30.21.07.04 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 May 2023 21:07:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1685506025; x=1688098025; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=H24fyidw2Mts4UgybMsZXcSBtkvN1xbQ1AV6r3ckQ6Y=; b=G/pSZ3rHfbBc9FT/9EhIqO1JQHpC6oBXoh6ZpcAdeEfW8zBL8i8VI3hiSQOsxwa2SD jwL7aNWqW4Or9oCWX/308ICQUrRTjo1T22IyS09DovSiML2dEfC4D3WrIdsFtuWlr6Gv B+4D0YYx3O52gEXNKmMkAnMrAvthRA1nXPBRDnUHufqq+Gz6ZEcOFq/1+XfCgdKZJdRF yiclVOTDC85ImGEQ9ytv1SrmZF38B64ftsd7VRfIKZ+vynsuvYT7hA0jKfPMKzkm2x2D t2cs4nugi9kA+WV3rGXTh261b8bjxMpBFCg8ZwfMx/uMcs/MGV2NbX512gzD0RRM/VvN nxNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685506025; x=1688098025; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=H24fyidw2Mts4UgybMsZXcSBtkvN1xbQ1AV6r3ckQ6Y=; b=TE1qkfhuvC2fIIHdFDgDxONPscAeNNejfyLfaOyVYkUFk4CHDiwqqf4+NQMNdvedyD qqquoXPIUDsTkS25l64KiOFtj/CGBFBtx2epcesRjOZNxGoqmVBngCsCHRwG1mig17va 4ngO46vXHb+8KxBCATwwlkrnJUtvhklzfTuHH1BZc6V5LSmy6nOeeezh2fcQxzQl26bV QSwdK/ka7a8fzPuIuGImKE/a4yUSSnlenV6gWSj9YUnALTOFgsw2wHQ8R6deLyHC2Na8 p+HVj4S7gLRPpim0Gfq9O6LPrrGSoNZvbjsulAcfw2Nd2xX+HR5Z7d6851c1yCbWp+Vk xeJg== X-Gm-Message-State: AC+VfDxm9o/ztGZkeFPp+LpOR/jwFw6sqy2rgD0O/Rb1Ns0U3WBJK5uT xbQ+9Fb0oatU2/Twby88vdNMfF3ivL/GDR9LQlg= X-Google-Smtp-Source: ACHHUZ7++cWADdqLkq5tBe8zHQk/uSkBinvC5UwM9ny79mk3abx6mCCWg9huucn4F4nMW4fvPuXBkw== X-Received: by 2002:a05:6808:2a6d:b0:397:c038:54ef with SMTP id fu13-20020a0568082a6d00b00397c03854efmr2459995oib.0.1685506024829; Tue, 30 May 2023 21:07:04 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 42/48] tcg: Fix PAGE/PROT confusion Date: Tue, 30 May 2023 21:03:24 -0700 Message-Id: <20230531040330.8950-43-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230531040330.8950-1-richard.henderson@linaro.org> References: <20230531040330.8950-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::235; envelope-from=richard.henderson@linaro.org; helo=mail-oi1-x235.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01, T_SPF_TEMPERROR=0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1685506124391100003 Content-Type: text/plain; charset="utf-8" The bug was hidden because they happen to have the same values. Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- tcg/region.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/tcg/region.c b/tcg/region.c index bef4c4756f..f8410ba5db 100644 --- a/tcg/region.c +++ b/tcg/region.c @@ -505,6 +505,14 @@ static int alloc_code_gen_buffer(size_t tb_size, int s= plitwx, Error **errp) return PROT_READ | PROT_WRITE; } #elif defined(_WIN32) +/* + * Local source-level compatibility with Unix. + * Used by tcg_region_init below. + */ +#define PROT_READ 1 +#define PROT_WRITE 2 +#define PROT_EXEC 4 + static int alloc_code_gen_buffer(size_t size, int splitwx, Error **errp) { void *buf; @@ -525,7 +533,7 @@ static int alloc_code_gen_buffer(size_t size, int split= wx, Error **errp) region.start_aligned =3D buf; region.total_size =3D size; =20 - return PAGE_READ | PAGE_WRITE | PAGE_EXEC; + return PROT_READ | PROT_WRITE | PROT_EXEC; } #else static int alloc_code_gen_buffer_anon(size_t size, int prot, @@ -794,10 +802,10 @@ void tcg_region_init(size_t tb_size, int splitwx, uns= igned max_cpus) * buffer -- let that one use hugepages throughout. * Work with the page protections set up with the initial mapping. */ - need_prot =3D PAGE_READ | PAGE_WRITE; + need_prot =3D PROT_READ | PROT_WRITE; #ifndef CONFIG_TCG_INTERPRETER if (tcg_splitwx_diff =3D=3D 0) { - need_prot |=3D PAGE_EXEC; + need_prot |=3D PROT_EXEC; } #endif for (size_t i =3D 0, n =3D region.n; i < n; i++) { @@ -807,9 +815,9 @@ void tcg_region_init(size_t tb_size, int splitwx, unsig= ned max_cpus) if (have_prot !=3D need_prot) { int rc; =20 - if (need_prot =3D=3D (PAGE_READ | PAGE_WRITE | PAGE_EXEC)) { + if (need_prot =3D=3D (PROT_READ | PROT_WRITE | PROT_EXEC)) { rc =3D qemu_mprotect_rwx(start, end - start); - } else if (need_prot =3D=3D (PAGE_READ | PAGE_WRITE)) { + } else if (need_prot =3D=3D (PROT_READ | PROT_WRITE)) { rc =3D qemu_mprotect_rw(start, end - start); } else { g_assert_not_reached(); --=20 2.34.1