linux-kernel - [RFC PATCH v1 07/11] riscv: Export have_user

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Message-ID: <20260206002349.96740-8-andrew.jones@oss.qualcomm.com>
Date: Thu,  5 Feb 2026 18:23:45 -0600
From: Andrew Jones <andrew.jones@....qualcomm.com>
To: linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        kvm-riscv@...ts.infradead.org
Cc: Paul Walmsley <pjw@...nel.org>, Palmer Dabbelt <palmer@...belt.com>,
        Anup Patel <anup@...infault.org>,
        Clément Léger <cleger@...osinc.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Guodong Xu <guodong@...cstar.com>,
        Charlie Jenkins <charlie@...osinc.com>,
        Charlie Jenkins <thecharlesjenkins@...il.com>,
        Samuel Holland <samuel.holland@...ive.com>
Subject: [RFC PATCH v1 07/11] riscv: Export have_user_pmlen* booleans

A following patch will need to access have_user_pmlen_7 from
another file.

Signed-off-by: Andrew Jones <andrew.jones@....qualcomm.com>
---
 arch/riscv/kernel/process.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index 31a392993cb4..4fa14aff7f8d 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -274,8 +274,8 @@ enum {
 	PMLEN_16 = 16,
 };
 
-static bool have_user_pmlen_7;
-static bool have_user_pmlen_16;
+bool riscv_have_user_pmlen_7;
+bool riscv_have_user_pmlen_16;
 
 /*
  * Control the relaxed ABI allowing tagged user addresses into the kernel.
@@ -306,10 +306,10 @@ long set_tagged_addr_ctrl(struct task_struct *task, unsigned long arg)
 	pmlen = FIELD_GET(PR_PMLEN_MASK, arg);
 	if (pmlen == PMLEN_0) {
 		pmm = ENVCFG_PMM_PMLEN_0;
-	} else if (pmlen <= PMLEN_7 && have_user_pmlen_7) {
+	} else if (pmlen <= PMLEN_7 && riscv_have_user_pmlen_7) {
 		pmlen = PMLEN_7;
 		pmm = ENVCFG_PMM_PMLEN_7;
-	} else if (pmlen <= PMLEN_16 && have_user_pmlen_16) {
+	} else if (pmlen <= PMLEN_16 && riscv_have_user_pmlen_16) {
 		pmlen = PMLEN_16;
 		pmm = ENVCFG_PMM_PMLEN_16;
 	} else {
@@ -407,8 +407,8 @@ static int __init tagged_addr_init(void)
 	 * Assume the supported PMLEN values are the same on all harts.
 	 */
 	csr_clear(CSR_ENVCFG, ENVCFG_PMM);
-	have_user_pmlen_7 = try_to_set_pmm(ENVCFG_PMM_PMLEN_7);
-	have_user_pmlen_16 = try_to_set_pmm(ENVCFG_PMM_PMLEN_16);
+	riscv_have_user_pmlen_7 = try_to_set_pmm(ENVCFG_PMM_PMLEN_7);
+	riscv_have_user_pmlen_16 = try_to_set_pmm(ENVCFG_PMM_PMLEN_16);
 
 	if (!register_sysctl("abi", tagged_addr_sysctl_table))
 		return -EINVAL;
-- 
2.43.0